CN109649781B

CN109649781B - Material rack

Info

Publication number: CN109649781B
Application number: CN201910084849.4A
Authority: CN
Inventors: 张力; 周振华; 金巍; 李晓非; 马建新
Original assignee: Shenzhen Zhongji Easy Rent Technology Co ltd; China International Marine Containers Group Co Ltd
Current assignee: Shenzhen Zhongji Easy Rent Technology Co ltd; China International Marine Containers Group Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2024-01-23
Anticipated expiration: 2039-01-29
Also published as: CN109649781A

Abstract

The invention provides a material rack, which comprises a frame, a plurality of supporting mechanisms and binding bands. The frame is internally provided with an accommodating space for accommodating a workpiece; the plurality of supporting mechanisms are arranged at intervals along the transverse direction of the frame; the supporting mechanism is erected in the accommodating space of the frame; each supporting mechanism comprises two vertical supports and at least one group of hooking components, wherein the two vertical supports are arranged at intervals along the longitudinal direction of the frame, the at least one group of hooking components are connected to the two vertical supports, each group of hooking components comprises two hooks which are connected with the two vertical supports in a one-to-one correspondence manner and protrude towards the transverse direction of the frame, and the two hooks of each group are positioned on the same side of the vertical supports and can hook a workpiece at the same time; the binding belt is arranged corresponding to the hooking component; the binding belts are positioned below the corresponding hooking assemblies, the two ends of the binding belts are respectively connected with the two vertical supports in one-to-one correspondence, and one end of each binding belt is detachably connected with the corresponding vertical support; when the binding belt is connected and fixed with the supporting mechanism, the binding belt is wound on the outer side of the workpiece to fix the workpiece.

Description

Material rack

Technical Field

The invention relates to the technical field of automobile manufacturing, in particular to a material rack.

Background

Flexible production is a production form which is greatly carried out by most product-intensive manufacturing enterprises in recent years, and particularly the automobile industry.

The flexible production adopted in the automobile industry means that a plurality of automobile types can be produced in a mixed mode on one production line, but various parameters of each automobile type are different, and workpieces required by different automobile types are also different, so that how to load various different workpieces brings great trouble to an automobile factory.

Disclosure of Invention

The invention aims to provide a material rack capable of simultaneously loading various types of workpieces, so as to solve the problem of how to load different workpieces in flexible production in the prior art.

In order to solve the technical problems, the invention provides a material rack, which comprises a frame, a plurality of guide rails and a plurality of guide rails, wherein the frame is internally provided with a containing space for containing a workpiece; a plurality of support mechanisms arranged at intervals along the transverse direction of the frame; the supporting mechanism is erected in the accommodating space of the frame; each supporting mechanism comprises two vertical supports and at least one group of hooking components, wherein the two vertical supports are arranged at intervals along the longitudinal direction of the frame, the at least one group of hooking components are connected to the two vertical supports, each group of hooking components comprises two hooks which are connected with the two vertical supports in a one-to-one correspondence manner and transversely protrude towards the frame, and the two hooks of each group are positioned on the same side of the vertical support and can hook a workpiece at the same time; the binding belt is arranged corresponding to the hooking component; the binding bands are positioned below the corresponding hooking assemblies, two ends of the binding bands are respectively connected with the two vertical supports in one-to-one correspondence, and one end of each binding band is detachably connected with the corresponding vertical support; when the binding band is connected and fixed with the supporting mechanism, the binding band is wound on the outer side of the workpiece to fix the workpiece.

In one embodiment, in each supporting mechanism, the hooking components have a plurality of groups, and the hooking components are arranged at intervals along the height direction of the vertical support.

In one embodiment, the frame comprises two side frames connected with each other, and the two vertical supports of each supporting mechanism are connected with the two side frames in a one-to-one correspondence manner; the vertical supports comprise vertical rods and two cross rods which are connected to the two ends of the vertical rods and extend towards the same side in a protruding mode, and the tail ends of the two cross rods are respectively connected with the side frames in a rotating mode so that the two vertical supports of each supporting mechanism can be close to or far away from each other; when the two vertical supports of each supporting mechanism are close to each other, the two vertical supports are positioned at a first position, and the supporting mechanisms are closed relative to the side frames; when the two vertical supports of each supporting mechanism rotate to be far away from each other, the two vertical supports are positioned at the second position, and the supporting mechanisms are opened relative to the side frames.

In one embodiment, the tail end of each cross rod is provided with a rotating shaft hole, a rotating shaft is arranged in the rotating shaft hole in a penetrating manner, and the rotating shaft can rotate relative to the rotating shaft hole; the two rotating shafts of each vertical support are fixedly connected with the side frames, so that the rotatable connection between the vertical support and the frame is realized.

In one embodiment, the vertical support further comprises a diagonal rod connected between the vertical rod and the horizontal rod, and the diagonal rod is inclined relative to both the vertical rod and the horizontal rod.

In one embodiment, a cushion block is further arranged on the other side of the vertical support opposite to the hook along the transverse direction of the frame; when two adjacent supporting mechanisms are closed, the hook of one supporting mechanism is abutted against the cushion block of the other supporting mechanism.

In one embodiment, the device further comprises a limiting mechanism fixed at the bottom of the frame, the limiting mechanism comprises angle limiting pieces arranged at two sides of each supporting mechanism, when the supporting mechanisms are opened and the two vertical supports are located at the second positions, the angle limiting pieces stop the vertical supports.

In one embodiment, the angle limiting part comprises a protecting sleeve and a magnetic body embedded in the protecting sleeve, the protecting sleeve is an elastic body, and the vertical support can be sucked and fixed by the magnetic body.

In one embodiment, the limiting mechanism further comprises a rotation limiting piece arranged at the bottoms of the two vertical supports of each supporting mechanism, the rotation limiting piece is fixed on the other side of the vertical supports, which is opposite to the hook, in the transverse direction of the frame, and when the supporting mechanisms are closed and the two vertical supports are positioned at the first position, the rotation limiting piece fixes the vertical supports; the rotation limiting part comprises a protective sleeve and a magnetic body embedded in the protective sleeve, the protective sleeve is an elastic body, and the vertical support can be sucked and fixed by the magnetic body.

In one embodiment, the device further comprises a locking mechanism, wherein the locking mechanism is arranged on the outermost supporting mechanism, the locking mechanism comprises locking pieces which are arranged on the outer sides of two vertical supports of the supporting mechanism in a one-to-one correspondence manner, and the bottom of the side frame is provided with a fixing hole; the locking piece can extend downwards out of the vertical support and be inserted into the fixing hole to lock the vertical support at the second position.

In one embodiment, the locking member comprises two limiting pipes fixed on the vertical support, a spring arranged between the two limiting pipes, a bolt sleeved in the two limiting pipes and the spring, and a handle vertically connected to the top end of the bolt, wherein the bolt can move up and down relative to the vertical support and is inserted into the fixing hole.

In one embodiment, the support mechanism further comprises guard members, each of which covers the hook and extends to the vertical support and extends upwardly beyond the hook against the vertical support.

In one embodiment, a lower boss is arranged at the bottom of the frame, a groove is recessed inwards in the lower boss, an upper boss is arranged at the top of the frame, and the size of the groove is larger than that of the upper boss.

In one embodiment, one side of the bottom of the frame is provided with one set of casters along the longitudinal direction of the frame, and the middle area of the bottom of the frame is provided with another set of casters.

According to the technical scheme, the invention has the advantages and positive effects that:

the material rack comprises a frame, a plurality of supporting mechanisms and binding bands, wherein the supporting mechanisms and the binding bands are arranged at intervals along the transverse direction of the frame. Each supporting mechanism comprises two vertical supports and at least one hooking component, wherein the two vertical supports and the at least one hooking component are arranged at intervals in the longitudinal direction of the frame, each hooking component comprises a hook which is connected with the two vertical supports in one-to-one correspondence and protrudes towards the transverse direction of the frame, the hooks are positioned on the same side of the vertical supports and can hook a workpiece at the same time, the workpiece is fixed by winding the binding belt on the outer side of the workpiece, and then the workpiece is firmly fixed on the material rack. The work rest of the invention hooks the work pieces by hooking, so that the work pieces of various types and sizes can be hooked and then bound by the binding belt, and the loading of the work pieces of various types and sizes can be realized.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a workpiece.

Fig. 2 is a schematic structural view of another embodiment of the workpiece.

Fig. 3 is a schematic view of a further embodiment of a workpiece.

Fig. 4 is a schematic structural view of the material rack of the present invention.

Fig. 5 is a side view of the inventive material rack.

Fig. 6 is a front view of a workpiece loaded on a work carrier.

Fig. 7 is a schematic view of a structure in which two different types of workpieces are loaded on a rack.

Fig. 8 is a schematic view of a structure in which one rack stands on another rack.

Fig. 9 is a schematic structural view of an upper boss of one material rack extending into a lower boss of another material rack.

Fig. 10 is a schematic structural view of a support mechanism of the material rack.

Fig. 11 is a schematic structural view of the support mechanisms of the material rack being closed.

Fig. 12 is a schematic structural view of a material rack in which one supporting mechanism is closed and the other supporting mechanism is opened.

Fig. 13 is a schematic view of a structure in which the supporting mechanisms of the material rack are all opened.

Fig. 14 is a schematic structural view of a pad in which a hook of one supporting mechanism abuts against another supporting mechanism.

Fig. 15 is a schematic structural view of the angle limiting member.

Fig. 16 is a schematic view of the mechanism of the locking member.

The reference numerals are explained as follows: 1. a material rack; 11. a frame; 111. a side frame; 1111. a lower boss; 1112. an upper boss; 12. a support mechanism; 121. vertical support; 1211. a vertical rod; 1212. a cross bar; 1213. a diagonal rod; 1214. a rotating shaft; 122. hooking; 123. a cushion block; 124. a guard; 13. a strap; 141. an angle limiting member; 1411. a protective sleeve; 1412. a magnetic body; 1413. a fixed block; 142. rotating the limiting piece; 15. a locking mechanism; 151. a handle; 152. a plug pin; 153. a limiting tube; 154. a spring; 155. a clamping block; 156. a fixing member; 161. casters; 171. front traction; 172. a rear hook; 2/2a/2b/2c/2d/2e/2f/2g/2h/2i, workpiece.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.

For the purpose of further illustrating the principles and structure of the present invention, preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.

The invention provides a material rack 1, which is suitable for loading a workpiece 2, wherein the workpiece 2 is provided with a cross bar, and a hollow groove arranged along the length direction of the cross bar is arranged below or above the cross bar. The workpiece 2 may be a front end frame of an automobile, may be another part of an automobile, or may be a workpiece in other industries.

Referring to fig. 1, there are different sized workpieces 2a, 2b and 2c of the same model, referring to fig. 2, there are different sized workpieces 2d, 2e and 2f of another model, referring to fig. 3, there are different sized workpieces 2g, 2h and 2i of yet another model, each of which can be loaded by the same rack of the present invention.

Referring to fig. 4 to 5, the material rack 1 in the present embodiment includes a frame 11, a supporting mechanism 12, a strap 13, a limiting mechanism, a locking mechanism 15, a traveling mechanism, and a traction mechanism.

Referring to fig. 6, the work piece 2a is fixed to the work piece 1 by the support mechanism 12 and the strap 13. Referring to fig. 7, the work pieces 2a and 2d are simultaneously fixed to the work piece 1 by the work piece holder 1.

The following is a detailed description.

The frame 11 has a receiving space for receiving a workpiece therein. Specifically, the frame 11 includes two side frames 111 disposed at intervals.

The side frame 111 comprises a top beam, a bottom beam, two corner posts connecting the top beam and the bottom beam, a top rotating shaft fixing beam parallel to the top beam, a bottom rotating shaft fixing beam parallel to the top beam and bottom rotating shaft fixing beams respectively positioned on two sides of the bottom fixing beam, and a limiting piece fixing beam parallel to the bottom rotating shaft fixing beam.

Wherein, bottom pivot fixed beam is located the top pivot fixed beam under.

A plurality of reinforcing beams are further arranged between the two side frames 111 at intervals along the height direction of the frame 11, and each reinforcing beam is arranged along the longitudinal direction of the frame 11 and connected between corner posts of the two side frames 111 to increase the strength of the material frame 1.

The corner post includes the corner post body that is square tubular, locates the last boss 1112 at corner post body top and locates the lower boss 1111 of corner post body bottom, and the height of boss 1111 is greater than the height of boss 1112 down.

The lower boss 1111 is recessed with a groove, so that the upper boss 1112 of the other corner post can extend into the groove, and a corner post can stand on the other corner post, thereby realizing stacking of the frames 11 and 11.

Referring to fig. 8 and 9, the lower boss 1111 includes a transition portion and a stabilizing portion, the transition portion is connected to the bottom of the corner post body, and is in a quadrangular frustum shape, the top side length of the transition portion is longer than the side length of the corner post body, and the bottom side length is equal to the stabilizing portion side length. The stabilizing part is connected to the bottom of the transition part and is in a quadrangular prism shape. The contour of the groove is the same as the contour of the lower boss 1111, and the depth of the groove is greater than the height of the upper boss 1112.

The upper boss 1112 includes a connection portion and a support portion, is connected to the top of the corner post body, is in a quadrangular shape, and has the same side length as the corner post body. The supporting part is connected to the top of the connecting part and is in a quadrangular frustum shape, the side length of the bottom of the supporting part is the same as that of the connecting part, and the side length of the top is smaller than that of the bottom of the supporting part.

Due to the heavy weight of the frame 11, the requirement of post-stacking movement of the material rest 1 and the material rest 1 in the workshop can be met by adopting the structure. It will be appreciated that the design of the strapping band, which is bundled in the height direction of the work-pieces 1, can be increased according to actual needs, while fixing the two work-pieces 1 arranged up and down.

The supporting mechanisms 12 are arranged at intervals along the transverse direction of the frame 11, and each supporting mechanism 12 stands in the accommodating space of the frame 11.

Specifically, in the lateral direction of the frame 11, an outer support mechanism, an intermediate support mechanism, and an inner support mechanism are included. In the direction of fig. 4, the side far from the operator is the inner side, the side close to the operator is the outer side, the inner side is the inner side supporting mechanism, and the outer side is the outer side supporting mechanism.

The intermediate support mechanism and the outer support mechanism are arranged side by side and each comprise two vertical supports 121, two hooking assemblies, a guard 124 and two pad assemblies arranged at intervals in the longitudinal direction of the frame 11.

Referring to fig. 10, the vertical support 121 includes a vertical rod 1211 and two cross bars 1212 connected to both ends of the vertical rod 1211 and protruding toward the same side thereof.

The tail ends of the two cross bars 1212 are respectively provided with a rotating shaft hole, a rotating shaft 1214 is arranged in the rotating shaft holes in a penetrating way, and the rotating shaft 1214 can rotate relative to the rotating shaft holes. The two rotating shafts 1214 of each vertical support 121 are respectively and fixedly connected with the top rotating shaft fixing beam and the bottom rotating shaft fixing beam of the side frame 111, so that the rotatable connection between the vertical support 121 and the frame 11 is realized.

Referring to fig. 11, the outer support mechanism and the intermediate support mechanism are both closed on the side frames 111, and the two vertical supports 121 of each support mechanism 12 are adjacent to each other and are both located at the first position for loading the workpiece 2.

Referring to fig. 12, the outer support mechanism is opened relative to the side frame 111, two vertical supports 121 of the outer support mechanism are far away from each other and are both located at the second position, the middle support mechanism is closed relative to the side frame 111, and two vertical supports 121 of the middle support mechanism are close to each other and are located at the first position. The sequential entry or exit of each workpiece 2 is achieved by the sequential opening or closing of each support mechanism 12.

Referring to fig. 13, the outer support mechanism and the intermediate support mechanism are both open at the side frame 111, and the two vertical supports 121 of each support mechanism 12 are both away from each other and in the second position, allowing the workpiece 2 to enter or exit the support mechanism 12.

The vertical support 121 further includes a diagonal rod 1213 connected between the vertical rod 1211 and the cross rod 1212, the diagonal rod 1213 being inclined relative to both the vertical rod 1211 and the cross rod 1212. In one embodiment, the angle between the inclined rod 1213 and the upright 1211 and the cross rod 1212 is 45 °. The use of diagonal rods 1213 to connect the cross bar 1212 with the upright rods 1211 ensures that rotation of each support mechanism 12 does not interfere with the adjacent support mechanism 12 with a smaller spacing between adjacent support mechanisms 12. In other embodiments, the angle between the inclined rod 1213 and the cross rod 1212 and the upright rod 1211 may be set according to practical needs.

The two cushion block components are arranged in one-to-one correspondence with the two hooking components. Referring to fig. 14, in the lateral direction of the frame 11, the pad assembly is connected to the other side of the vertical stay 121 with respect to the hook 122. When the two adjacent supporting mechanisms 12 are closed, the hook 122 of one supporting mechanism 12 is abutted against the cushion block 123 of the other supporting mechanism 12, so that after each supporting mechanism 12 is closed, self-locking is formed between the adjacent supporting mechanisms 12.

The guard 124 of the intermediate support mechanism and the outer support mechanism are identical in structure. Each guard 124 covers each hook 122 and extends to the vertical support 121 and extends upwardly beyond the hooks 122 against the vertical support 121. In one embodiment, the protecting member 124 is made of polyurethane elastic material, and has good buffering and anti-vibration effects, so that the workpiece 2 can be well protected. In other embodiments, the guard 124 may also be an ethylene vinyl acetate copolymer. In practice, this may be chosen as desired.

The inner support mechanism is fixedly connected with the frame 11. Specifically, the medial support mechanism includes two vertical braces 121, two hooking assemblies, and a guard 124. The bottom of the vertical support 121 of the inner support mechanism is fixed with a limiting member fixing beam of the side frame 111, and specifically includes a vertical rod 1211 and a cross rod 1212 connected to the top of the vertical rod 1211, and the cross rod 1212 extends in the transverse direction of the frame 11.

The two hook components are arranged at intervals along the height direction of the vertical support 121, the two hooks 122 of each hook component are connected with the vertical rods 1211 of the two vertical supports 121 in a one-to-one correspondence manner and protrude along the transverse direction of the frame 11, and the two hooks 122 of each group are positioned on the same side of the vertical support 121 and can hook the workpiece 2 at the same time. The distance between the two hooks is smaller than the length of each workpiece empty slot so that the two hooks can hook the workpiece 2 at the same time.

The guard 124 of the inner support mechanism is identical to the guard 124 of the intermediate and outer support mechanisms in structure and will not be described in detail herein.

The two binding bands 13 are arranged in one-to-one correspondence with the two hooking components. The binding belt 13 is positioned below the corresponding hooking component, two ends of the binding belt are respectively connected with the two vertical supports 121 in a one-to-one correspondence manner, and one end of the binding belt is detachably connected with the vertical supports 121. When the strap 13 is connected to the support mechanism 12, the strap 13 is wound around the outside of the workpiece 2 to fix the workpiece 2. The work piece 2 is restricted from shaking by the binding band 13, so that the work piece 2 is stably fixed on the material frame 1.

Specifically, the strap 13 is an elastic cord, and therefore, the strap 13 can effectively bind the workpiece 2 regardless of the type and size of the workpiece 2.

The limiting mechanism is fixed at the bottom of the frame 11. Specifically, the limiting mechanism includes an angle limiter 141 and a rotation limiter 142.

The angle stoppers 141 are disposed on both sides of each support mechanism 12 and are fixed to stopper fixing beams of the side frames 111. When the supporting mechanism 12 is opened and the two vertical supports 121 are located at the second position, the angle limiting piece 141 stops the vertical supports 121.

Specifically, referring to fig. 15, the angle limiter 141 includes a protection sleeve 1411, a magnetic body 1412 embedded in the protection sleeve 1411, and a fixing block 1413. The protective sleeve 1411 is fixed on the fixed block 1413, and the fixed block 1413 is fixedly connected with the limiting piece fixed beam. The angle limiter 141 attracts the vertical supports 121 by the magnetic force of the magnetic body 1412, thereby stopping the vertical supports 121 of the support mechanism 12, and also preventing each vertical support 121 from rebounding. Specifically, the guard sleeve 1411 is an elastomer, protecting the vertical support 121.

In one embodiment, the angle between the angle limiting member 141 and the horizontal plane is an acute angle, so that the vertical support 121 can rotate by an angle greater than 180 degrees. In other embodiments, the selection may be made according to actual needs.

The rotation limiting piece 142 is arranged at the bottoms of the two vertical supports 121 of each supporting mechanism 12. Specifically, the rotation limiter 142 is fixed to the other side of the vertical stay 121 with respect to the hook 122 in the lateral direction of the frame 11. When the supporting mechanism 12 is closed and the two vertical supports 121 are located at the first position, the rotation limiting piece 142 fixes the vertical supports 121. Specifically, the rotation limiter 142 includes a protection sleeve and a magnetic body embedded in the protection sleeve. The vertical support is sucked by the magnetic force of the magnetic body, so that the rotation of the vertical support of the supporting mechanism is limited.

The lock mechanism 15 is connected to the outermost support mechanism 12, i.e., the outer support mechanism.

The locking mechanism 15 includes locking members disposed on the outer sides of the two vertical supports 121 of the supporting mechanism 21 in a one-to-one correspondence manner, and fixing members 156 fixed on the bottom of the side frame 111, wherein fixing holes are formed in the fixing members 156, and the locking members can extend downwards out of the vertical supports 121 and be inserted into the fixing holes to lock the vertical supports 121 in the second position.

Specifically, referring to fig. 16, the locking member includes two limiting tubes 153 fixed on the vertical support 121, a spring 154 disposed between the two limiting tubes 153, a plug 152 sleeved in the two limiting tubes 153 and the spring 154, a handle 151 vertically connected to the top end of the plug 152, and a clamping block 155 fixed on the vertical support 121, wherein the clamping block 155 is disposed above the limiting tubes 153. The latch 155 is provided with a locking groove in which the latch 152 and the handle 151 move up and down, and the latch 152 moves in the locking groove and moves up and down with respect to the vertical support 121 to be inserted into the fixing hole.

The fixing member 156 is fixed to the stopper fixing beam with a space therebetween. Specifically, the fixing member 156 includes a horizontally disposed mounting portion and support portions connected to opposite sides of the mounting portion, and in this embodiment, the support portions are disposed obliquely.

The travelling mechanism is arranged at the bottom of the frame. In this embodiment, the travelling mechanism is a castor 161.

In this embodiment, one set of casters 161 is disposed at the bottom of the bottom beam of one side frame 111, and the other set of casters 161 is disposed at the bottom of the limiting member fixing beam of the other side frame 111. In other embodiments, the configuration may be set according to actual needs.

The traction mechanism includes a front traction 171 and a rear hook 172, which are respectively provided at both sides of the longitudinal direction of the frame 11. The front traction 171 of one frame 11 may mate with the rear hooks 172 of the other frame 11.

The front traction 171 is foldable with respect to the frame 11, i.e. when the front traction 171 is lowered horizontally, it can engage with the rear hooks 172 of the other work rack 1. When not in use, the front traction 171 is folded and retracted, and the front traction 171 stands upright on one side of the frame 11.

While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A rack, characterized in that the rack comprises:

a frame having a receiving space therein for receiving a workpiece;

a plurality of support mechanisms arranged at intervals along the transverse direction of the frame; the supporting mechanism is erected in the accommodating space of the frame; each supporting mechanism comprises two vertical supports and at least one group of hooking components, wherein the two vertical supports are arranged at intervals along the longitudinal direction of the frame, the at least one group of hooking components are connected to the two vertical supports, each group of hooking components comprises two hooks which are connected with the two vertical supports in a one-to-one correspondence manner and transversely protrude towards the frame, and the two hooks of each group are positioned on the same side of the vertical support and can hook a workpiece at the same time;

the binding belt is arranged corresponding to the hooking component; the binding bands are positioned below the corresponding hooking assemblies, two ends of the binding bands are respectively connected with the two vertical supports in one-to-one correspondence, and one end of each binding band is detachably connected with the corresponding vertical support; when the binding band is connected and fixed with the supporting mechanism, the binding band is wound on the outer side of the workpiece to fix the workpiece.

2. The material rack according to claim 1, wherein in each supporting mechanism, a plurality of groups of the hooking components are arranged at intervals along the height direction of the vertical support.

3. The material rack according to claim 1, wherein the frame comprises two side frames connected with each other, and two vertical supports of each supporting mechanism are connected with the two side frames in a one-to-one correspondence;

the vertical supports comprise vertical rods and two cross rods which are connected to the two ends of the vertical rods and extend towards the same side in a protruding mode, and the tail ends of the two cross rods are respectively connected with the side frames in a rotating mode so that the two vertical supports of each supporting mechanism can be close to or far away from each other;

when the two vertical supports of each supporting mechanism are close to each other, the two vertical supports are positioned at a first position, and the supporting mechanisms are closed relative to the side frames; when the two vertical supports of each supporting mechanism rotate to be far away from each other, the two vertical supports are positioned at the second position, and the supporting mechanisms are opened relative to the side frames.

4. A rack as claimed in claim 3, wherein the end of each cross bar is provided with a spindle aperture, a spindle being threaded in the spindle aperture, the spindle being rotatable relative to the spindle aperture;

the two rotating shafts of each vertical support are fixedly connected with the side frames, so that the rotatable connection between the vertical support and the frame is realized.

5. A rack as claimed in claim 3, wherein the vertical support further comprises a diagonal rod connected between the upright and the cross bar, the diagonal rod being inclined relative to both the upright and the cross bar.

6. A rack as claimed in claim 3, wherein, in the transverse direction of the frame, the other side of the vertical strut opposite the hook is also provided with a spacer;

when two adjacent supporting mechanisms are closed, the hook of one supporting mechanism is abutted against the cushion block of the other supporting mechanism.

7. A rack as claimed in claim 3, further comprising a stop mechanism secured to the bottom of the frame, the stop mechanism including angular stops disposed on either side of each of the support mechanisms, the angular stops stopping the vertical supports when the support mechanisms are open and the two vertical supports are in the second position.

8. The material rack of claim 7, wherein the angle limiting piece comprises a protective sleeve and a magnetic body embedded in the protective sleeve, the protective sleeve is an elastic body, and the vertical support can be sucked and fixed by the magnetic body.

9. The material rack of claim 7, wherein the limiting mechanism further comprises a rotation limiting piece arranged at the bottoms of two vertical supports of each supporting mechanism, the rotation limiting piece is fixed on the other side of the vertical supports, which is opposite to the hook, along the transverse direction of the frame, and when the supporting mechanisms are closed, the rotation limiting piece fixes the vertical supports when the two vertical supports are positioned at the first position;

the rotation limiting part comprises a protective sleeve and a magnetic body embedded in the protective sleeve, the protective sleeve is an elastic body, and the vertical support can be sucked and fixed by the magnetic body.

10. The material rack of claim 7, further comprising a locking mechanism, wherein the locking mechanism is arranged on an outermost supporting mechanism, the locking mechanism comprises locking pieces which are arranged on the outer sides of two vertical supports of the supporting mechanism in a one-to-one correspondence manner, and a fixing hole is formed in the bottom of the side frame;

the locking piece can extend downwards out of the vertical support and be inserted into the fixing hole to lock the vertical support at the second position.

11. The material rack of claim 10, wherein the locking piece comprises two limiting pipes fixed on the vertical support, a spring arranged between the two limiting pipes, a bolt sleeved in the two limiting pipes and the spring, and a handle vertically connected to the top end of the bolt, wherein the bolt can move up and down relative to the vertical support and be inserted into the fixing hole.

12. The material rack of claim 1, wherein the support mechanism further comprises guards, each guard covering the hook and extending to and extending upwardly beyond the hook against the vertical support.

13. The material rack of claim 1, wherein a lower boss is arranged at the bottom of the frame, a groove is recessed inwards in the lower boss, an upper boss is arranged at the top of the frame, and the size of the groove is larger than that of the upper boss.

14. A rack as claimed in claim 1, wherein one side of the frame bottom is provided with one set of casters and the middle area of the frame bottom is provided with another set of casters in the longitudinal direction of the frame.