一種大皮重(zhong)小量(liang)程(cheng)單點式稱(cheng)重(zhong)測力(li)傳(chuan)感器

技術領域

[0001] 本發(fa)明專利(li)涉(she)及單點式稱重測(ce)力(li)傳感器(qi)。

背景技術

[0002] 傳(chuan)統的(de)單點式測力(li)傳(chuan)感器只有上(shang)梁(liang)(liang)和下梁(liang)(liang)，且(qie)受力(li)后應(ying)變區直(zhi)接發生形變，隨即輸出信(xin)號(hao)。目前，有的(de)應(ying)用場合為皮重(zhong)遠較稱(cheng)量(liang)量(liang)程(cheng)大(da)，比(bi)如，皮重(zhong)為100㎏而量(liang)程(cheng)僅(jin)5㎏，上(shang)述結(jie)構(gou)的(de)測力(li)傳(chuan)感器遇到(dao)這種情(qing)況，不能滿(man)足稱(cheng)量(liang)精度，不適合大(da)皮重(zhong)小(xiao)量(liang)程(cheng)的(de)稱(cheng)重(zhong)要求。

發明內容

[0003] 本發明所(suo)(suo)要解決的(de)技術問題是提供(gong)一(yi)(yi)(yi)種大皮重(zhong)(zhong)小量(liang)程單點(dian)式(shi)稱重(zhong)(zhong)測力(li)傳感(gan)(gan)器(qi)，以克(ke)服傳統單點(dian)式(shi)測力(li)傳感(gan)(gan)器(qi)皮重(zhong)(zhong)小、量(liang)程大、精度低的(de)問題。為(wei)此，本發明采用(yong)以下(xia)(xia)技術方案：它包括由上(shang)下(xia)(xia)左(zuo)右(you)四個剛(gang)性(xing)桿(gan)構(gou)成(cheng)的(de)整體(ti)彈性(xing)體(ti)，在四個剛(gang)性(xing)桿(gan)的(de)交(jiao)界處為(wei)橫(heng)(heng)梁(liang)(liang)(liang)(liang)部位，所(suo)(suo)述(shu)(shu)橫(heng)(heng)梁(liang)(liang)(liang)(liang)分為(wei)一(yi)(yi)(yi)對(dui)上(shang)橫(heng)(heng)梁(liang)(liang)(liang)(liang)和(he)一(yi)(yi)(yi)對(dui)下(xia)(xia)橫(heng)(heng)梁(liang)(liang)(liang)(liang)，所(suo)(suo)述(shu)(shu)上(shang)橫(heng)(heng)梁(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)梁(liang)(liang)(liang)(liang)呈(cheng)矩(ju)形(xing)四角分布，所(suo)(suo)述(shu)(shu)上(shang)橫(heng)(heng)梁(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)梁(liang)(liang)(liang)(liang)的(de)橫(heng)(heng)截面積(ji)小于(yu)剛(gang)性(xing)桿(gan)的(de)橫(heng)(heng)截面積(ji)；所(suo)(suo)述(shu)(shu)彈性(xing)體(ti)中間(jian)還設(she)有(you)豎(shu)(shu)梁(liang)(liang)(liang)(liang)，所(suo)(suo)述(shu)(shu)豎(shu)(shu)梁(liang)(liang)(liang)(liang)處于(yu)所(suo)(suo)述(shu)(shu)矩(ju)形(xing)的(de)中心，與上(shang)部剛(gang)性(xing)桿(gan)和(he)下(xia)(xia)部剛(gang)性(xing)桿(gan)一(yi)(yi)(yi)體(ti)，所(suo)(suo)述(shu)(shu)一(yi)(yi)(yi)對(dui)上(shang)橫(heng)(heng)梁(liang)(liang)(liang)(liang)和(he)一(yi)(yi)(yi)對(dui)下(xia)(xia)橫(heng)(heng)梁(liang)(liang)(liang)(liang)相對(dui)于(yu)所(suo)(suo)述(shu)(shu)豎(shu)(shu)梁(liang)(liang)(liang)(liang)對(dui)稱，所(suo)(suo)述(shu)(shu)豎(shu)(shu)梁(liang)(liang)(liang)(liang)的(de)橫(heng)(heng)截面積(ji)小于(yu)上(shang)橫(heng)(heng)梁(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)梁(liang)(liang)(liang)(liang)的(de)橫(heng)(heng)截面積(ji)，豎(shu)(shu)梁(liang)(liang)(liang)(liang)用(yong)于(yu)設(she)置(zhi)稱重(zhong)(zhong)敏感(gan)(gan)元件。

[0004] 在(zai)(zai)采用上述技術方(fang)(fang)案(an)的基礎上，本發(fa)明還可采用以下進一步(bu)的技術方(fang)(fang)案(an)：所述豎(shu)梁處在(zai)(zai)由(you)四(si)個剛性桿圍成的中部通孔中。

[0005] 所(suo)述(shu)(shu)上橫(heng)梁和下橫(heng)梁為在靠(kao)近它們所(suo)處端的(de)彈(dan)性體上鉆孔而(er)形成的(de)孔壁；所(suo)述(shu)(shu)孔與(yu)所(suo)述(shu)(shu)中間通孔之間由縫連通，并由所(suo)述(shu)(shu)縫和孔界(jie)定將所(suo)述(shu)(shu)彈(dan)性體分(fen)為上下左右四(si)個(ge)剛性桿(gan)。

[0006] 所(suo)述縫相對于豎梁對稱(cheng)設置。

[0007] 所(suo)述彈性體在中(zhong)部通孔的外圍(wei)具(ju)有盲孔圈(quan)。

[0008] 所述(shu)彈性體在對應形成上橫梁和下橫梁的(de)(de)四個(ge)孔的(de)(de)位置的(de)(de)表面具有定位凹槽。

[0009] 由于(yu)采用(yong)(yong)(yong)本發(fa)明(ming)(ming)的(de)(de)(de)(de)技術(shu)方案，所(suo)述上橫(heng)梁(liang)(liang)(liang)(liang)和下(xia)橫(heng)梁(liang)(liang)(liang)(liang)先于(yu)豎(shu)梁(liang)(liang)(liang)(liang)變形(xing)(xing)(xing)，用(yong)(yong)(yong)于(yu)承(cheng)擔(dan)皮(pi)重(zhong)(zhong)(zhong)，在(zai)皮(pi)重(zhong)(zhong)(zhong)情況下(xia)豎(shu)梁(liang)(liang)(liang)(liang)不(bu)(bu)變形(xing)(xing)(xing)或(huo)變形(xing)(xing)(xing)極小(xiao)，豎(shu)梁(liang)(liang)(liang)(liang)用(yong)(yong)(yong)于(yu)承(cheng)擔(dan)稱重(zhong)(zhong)(zhong)測(ce)力的(de)(de)(de)(de)作用(yong)(yong)(yong)，本發(fa)明(ming)(ming)的(de)(de)(de)(de)結(jie)構(gou)非常(chang)(chang)適合大皮(pi)重(zhong)(zhong)(zhong)小(xiao)量程的(de)(de)(de)(de)稱重(zhong)(zhong)(zhong)要求。進一(yi)步(bu)地，本發(fa)明(ming)(ming)彈(dan)(dan)性體(ti)具有(you)鉸支(zhi)結(jie)構(gou)特點，四根橫(heng)梁(liang)(liang)(liang)(liang)不(bu)(bu)僅用(yong)(yong)(yong)于(yu)稱重(zhong)(zhong)(zhong)承(cheng)載而且起到剛性桿的(de)(de)(de)(de)軸的(de)(de)(de)(de)作用(yong)(yong)(yong)，在(zai)稱重(zhong)(zhong)(zhong)時(shi)，彈(dan)(dan)性體(ti)由矩(ju)形(xing)(xing)(xing)支(zhi)撐(cheng)向平(ping)行四邊形(xing)(xing)(xing)支(zhi)撐(cheng)轉變，豎(shu)梁(liang)(liang)(liang)(liang)變形(xing)(xing)(xing)時(shi)呈S形(xing)(xing)(xing)，能夠提(ti)高傳感器(qi)的(de)(de)(de)(de)稱重(zhong)(zhong)(zhong)靈敏度(du)，提(ti)高小(xiao)量程的(de)(de)(de)(de)稱重(zhong)(zhong)(zhong)精(jing)度(du)。并(bing)且，本發(fa)明(ming)(ming)可通(tong)過改(gai)變上橫(heng)梁(liang)(liang)(liang)(liang)和下(xia)橫(heng)梁(liang)(liang)(liang)(liang)的(de)(de)(de)(de)橫(heng)截面(mian)(mian)積，以針對不(bu)(bu)同的(de)(de)(de)(de)皮(pi)重(zhong)(zhong)(zhong)要求，通(tong)過改(gai)變豎(shu)梁(liang)(liang)(liang)(liang)的(de)(de)(de)(de)橫(heng)截面(mian)(mian)積則(ze)可控制量程，非常(chang)(chang)方便(bian)各種大皮(pi)重(zhong)(zhong)(zhong)小(xiao)量程的(de)(de)(de)(de)稱重(zhong)(zhong)(zhong)設計，提(ti)高稱重(zhong)(zhong)(zhong)測(ce)力傳感器(qi)的(de)(de)(de)(de)稱重(zhong)(zhong)(zhong)精(jing)度(du)。

附圖說明

[0010] 圖1為本發(fa)明所提供的實施例(li)1的主(zhu)視圖。

[0011] 圖2為(wei)圖1的(de)俯(fu)視圖。

[0012] 圖3為本發(fa)明所提供的(de)實施例2的(de)主視(shi)圖。

具體實(shi)施方式

[0013] 實(shi)施例1，參照附,1、2。

[0014] 本發明包括由(you)上下(xia)(xia)左右四個剛(gang)(gang)性(xing)(xing)桿(gan)(gan)100a、100b、100c、100d構(gou)成的整體(ti)彈性(xing)(xing)體(ti)，在四個剛(gang)(gang)性(xing)(xing)桿(gan)(gan)的交界處為橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)部(bu)位，所(suo)述(shu)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)分為一(yi)對(dui)上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和一(yi)對(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14，所(suo)述(shu)上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14呈矩形四角分布(bu)，所(suo)述(shu)上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)的橫(heng)(heng)(heng)(heng)(heng)截(jie)面(mian)積(ji)小(xiao)于(yu)剛(gang)(gang)性(xing)(xing)桿(gan)(gan)的橫(heng)(heng)(heng)(heng)(heng)截(jie)面(mian)積(ji)；所(suo)述(shu)彈性(xing)(xing)體(ti)中間(jian)(jian)還設有豎梁(liang)(liang)2，所(suo)述(shu)豎梁(liang)(liang)2處于(yu)所(suo)述(shu)矩形的中心(xin)，與上部(bu)剛(gang)(gang)性(xing)(xing)桿(gan)(gan)100a和下(xia)(xia)部(bu)剛(gang)(gang)性(xing)(xing)桿(gan)(gan)100b一(yi)體(ti)，所(suo)述(shu)一(yi)對(dui)上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和一(yi)對(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14相對(dui)于(yu)所(suo)述(shu)豎梁(liang)(liang)對(dui)稱(cheng)，所(suo)述(shu)對(dui)稱(cheng)為上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之(zhi)間(jian)(jian)對(dui)稱(cheng)、下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之(zhi)間(jian)(jian)對(dui)稱(cheng)、上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之(zhi)間(jian)(jian)對(dui)稱(cheng)，所(suo)述(shu)豎梁(liang)(liang)的橫(heng)(heng)(heng)(heng)(heng)截(jie)面(mian)積(ji)小(xiao)于(yu)上橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)的橫(heng)(heng)(heng)(heng)(heng)截(jie)面(mian)積(ji)，豎梁(liang)(liang)用于(yu)設置稱(cheng)重敏感元件。

[0015] 所(suo)(suo)述(shu)(shu)豎梁(liang)2處在由四個剛性(xing)桿圍成的(de)(de)中(zhong)部通孔(kong)20中(zhong)。所(suo)(suo)述(shu)(shu)豎梁(liang)的(de)(de)橫截面的(de)(de)D向(xiang)(xiang)尺(chi)寸大于C向(xiang)(xiang)尺(chi)寸，所(suo)(suo)述(shu)(shu)D向(xiang)(xiang)為彈(dan)性(xing)體(ti)厚(hou)度(du)方向(xiang)(xiang)，所(suo)(suo)述(shu)(shu)C向(xiang)(xiang)和(he)D向(xiang)(xiang)垂直。如果需(xu)要(yao)增(zeng)大量程(cheng)時，也可以增(zeng)大C向(xiang)(xiang)尺(chi)寸直至(zhi)大于D向(xiang)(xiang)尺(chi)寸。

[0016] 上(shang)述(shu)彈性(xing)體可為對(dui)一整塊剛性(xing)金屬件進(jin)行(xing)鉆孔(kong)和切(qie)割加(jia)工(gong)而成。

[0017] 所(suo)(suo)(suo)述(shu)上(shang)橫梁和(he)下橫梁為(wei)(wei)在(zai)靠近它們所(suo)(suo)(suo)處端(duan)的(de)彈(dan)性體上(shang)鉆孔(kong)5而形成的(de)孔(kong)壁；所(suo)(suo)(suo)述(shu)孔(kong)5與所(suo)(suo)(suo)述(shu)中(zhong)間通孔(kong)20之(zhi)間由縫(feng)4連通，并由所(suo)(suo)(suo)述(shu)縫(feng)4和(he)孔(kong)5界定將所(suo)(suo)(suo)述(shu)彈(dan)性體分為(wei)(wei)上(shang)下左右四個剛性桿。

[0018] 所述縫(feng)4相對(dui)于豎梁2對(dui)稱(cheng)(cheng)設(she)置。所述對(dui)稱(cheng)(cheng)為相鄰縫(feng)4之(zhi)(zhi)間(jian)對(dui)稱(cheng)(cheng)、對(dui)向縫(feng)4之(zhi)(zhi)間(jian)對(dui)稱(cheng)(cheng)。

[0019] 所述彈性(xing)體在中(zhong)部通孔(kong)20的外圍具有(you)盲孔(kong)圈6。

[0020] 所述彈性體在對應形成上橫(heng)梁和下橫(heng)梁的(de)四個孔5的(de)位(wei)置(zhi)的(de)表面具(ju)有定位(wei)凹(ao)槽7。

[0021] 在設(she)計時，通過(guo)設(she)計不(bu)同(tong)的孔5壁厚A及彈性體(ti)厚度(du)(du)B可以改(gai)變皮重的大小，通過(guo)設(she)計不(bu)同(tong)的豎梁壁厚C和豎梁寬(kuan)度(du)(du)D，可以控制量(liang)程，從而達到(dao)大皮重小量(liang)程的高精度(du)(du)傳(chuan)感(gan)器。

[0022] 以(yi)所述傳(chuan)感器的(de)(de)上橫梁(liang)(liang)和下橫梁(liang)(liang)可以(yi)承受50kg的(de)(de)皮重(zhong)為例(li)。在所述上橫梁(liang)(liang)和下橫梁(liang)(liang)承受50kg皮重(zhong)后，豎梁(liang)(liang)才有(you)足夠的(de)(de)形(xing)變，開始正(zheng)常輸出信號。在上橫梁(liang)(liang)下橫梁(liang)(liang)承受50kg以(yi)內的(de)(de)力，豎梁(liang)(liang)變形(xing)極小，沒有(you)信號輸出。

[0023] 實施例(li)2，參照附圖(tu)3。

[0024] 在(zai)本(ben)實施例中，本(ben)發明同(tong)樣包括由(you)上下(xia)(xia)左右四個剛(gang)(gang)(gang)性桿100a、100b、100c、100d構(gou)成的(de)(de)整(zheng)體彈(dan)(dan)性體，在(zai)四個剛(gang)(gang)(gang)性桿的(de)(de)交界處(chu)為橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)部位，所(suo)述(shu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)分(fen)為一對(dui)(dui)上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)11、12和(he)一對(dui)(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)13、14，所(suo)述(shu)上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)11、12和(he)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)13、14呈(cheng)矩(ju)形(xing)四角分(fen)布，所(suo)述(shu)上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)截面(mian)(mian)(mian)積(ji)小于(yu)(yu)剛(gang)(gang)(gang)性桿的(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)截面(mian)(mian)(mian)積(ji)；所(suo)述(shu)彈(dan)(dan)性體中間(jian)還設有豎(shu)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)2，所(suo)述(shu)豎(shu)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)2處(chu)于(yu)(yu)所(suo)述(shu)矩(ju)形(xing)的(de)(de)中心，與上部剛(gang)(gang)(gang)性桿100a和(he)下(xia)(xia)部剛(gang)(gang)(gang)性桿100b一體，所(suo)述(shu)一對(dui)(dui)上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)11、12和(he)一對(dui)(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)13、14相對(dui)(dui)于(yu)(yu)所(suo)述(shu)豎(shu)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)對(dui)(dui)稱(cheng)(cheng)，所(suo)述(shu)對(dui)(dui)稱(cheng)(cheng)為上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)稱(cheng)(cheng)、下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)稱(cheng)(cheng)、上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)稱(cheng)(cheng)，所(suo)述(shu)豎(shu)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)截面(mian)(mian)(mian)積(ji)小于(yu)(yu)上橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)和(he)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)截面(mian)(mian)(mian)積(ji)，豎(shu)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)用于(yu)(yu)設置稱(cheng)(cheng)重敏感元件(jian)8。

[0025] 所(suo)述(shu)豎(shu)梁2處在(zai)由四個(ge)剛性(xing)桿圍成的中部通(tong)孔20中。

[0026] 在(zai)(zai)(zai)實施例(li)的(de)(de)基礎上(shang)可(ke)(ke)以(yi)預見(jian)，對于上(shang)下(xia)(xia)橫(heng)梁(liang)的(de)(de)形(xing)(xing)(xing)成(cheng)方(fang)(fang)式(shi)還(huan)可(ke)(ke)以(yi)有其(qi)(qi)它多種方(fang)(fang)式(shi)，比(bi)如將上(shang)下(xia)(xia)橫(heng)梁(liang)部位(wei)的(de)(de)彈性體(ti)銑薄(bo)，或(huo)將上(shang)下(xia)(xia)橫(heng)梁(liang)部位(wei)的(de)(de)彈性體(ti)形(xing)(xing)(xing)狀銑成(cheng)工字形(xing)(xing)(xing)截面(mian)等等，其(qi)(qi)最(zui)終目的(de)(de)為使上(shang)、下(xia)(xia)橫(heng)梁(liang)的(de)(de)橫(heng)截面(mian)積(ji)(ji)小于剛(gang)性桿(gan)(gan)(gan)(gan)的(de)(de)橫(heng)截面(mian)積(ji)(ji)。對于上(shang)下(xia)(xia)橫(heng)梁(liang)的(de)(de)形(xing)(xing)(xing)成(cheng)方(fang)(fang)式(shi)實際上(shang)也可(ke)(ke)轉(zhuan)換成(cheng)上(shang)下(xia)(xia)左右四個剛(gang)性桿(gan)(gan)(gan)(gan)的(de)(de)外形(xing)(xing)(xing)設置問題，在(zai)(zai)(zai)本實施例(li)中，“桿(gan)(gan)(gan)(gan)”不一(yi)定是(shi)細(xi)長形(xing)(xing)(xing)態（就(jiu)像”四連(lian)桿(gan)(gan)(gan)(gan)“中的(de)(de)桿(gan)(gan)(gan)(gan)，也不一(yi)定必須是(shi)細(xi)長形(xing)(xing)(xing)狀，只要其(qi)(qi)起到“連(lian)桿(gan)(gan)(gan)(gan)”的(de)(de)作(zuo)用(yong)即可(ke)(ke)）。在(zai)(zai)(zai)本發明中，“桿(gan)(gan)(gan)(gan)”比(bi)“梁(liang)”橫(heng)截面(mian)積(ji)(ji)大(da)，而(er)相對于橫(heng)梁(liang)成(cheng)為剛(gang)形(xing)(xing)(xing)體(ti)，起到“后變形(xing)(xing)(xing)”的(de)(de)作(zuo)用(yong)，使得與桿(gan)(gan)(gan)(gan)連(lian)接(jie)的(de)(de)豎梁(liang)針(zhen)對稱重(zhong)物體(ti)變形(xing)(xing)(xing)，不受(shou)大(da)皮重(zhong)影響(xiang)。