Clamping device

Abstract

The utility model discloses a clamping device which comprises a plurality of clamping jaws and a bearing piece, a clamping space is formed among the clamping jaws, one end of the bearing piece and the lower portions of the clamping jaws are fixedly arranged, the other end of the bearing piece extends towards the clamping space, the bearing piece is provided with a supporting face facing upwards, and the supporting face faces upwards. The clamping device further comprises a shielding piece extending in the vertical direction, the upper portion of the shielding piece is connected with the clamping jaw, the lower portion of the shielding piece can be movably arranged in the length extending direction of the bearing piece, the clamping device at least has a first state and a second state, the clamping device is in the first state, and the shielding piece is in the second state. The lower portion of the shielding piece is folded relative to the clamping jaw, and the supporting face is exposed. When the clamping device is in the second state, the lower portion of the shielding piece approaches the free end of the bearing piece, the shielding piece shields the upper portion of the bearing piece, and therefore the surface of a clamped object can be prevented from being damaged in the process of lifting the clamping jaw upwards.

Description

Technical Field

[0001] The utility model relates to a clamping device. Background Art

[0002] When using a clamping device to clamp goods, in order to ensure the reliability of clamping, some clamps increase the friction of the clamping surface. However, in this way, the rough clamping surface can easily damage the surface of the goods, and even after the clamp is relaxed, the clamping surface and the goods cannot be completely separated, thereby causing damage to the goods in the process of lifting the clamp. Some clamps also have hooks at the bottom to form support under the goods. In this way, even if a clamping surface with a high friction coefficient is not set, the goods can still be clamped stably. However, when clamping goods that are closely arranged and have small spaces between each other, due to the limited movement space of the clamp, after the clamp is relaxed, the hook is very likely to rub against the goods in the process of lifting the clamp, causing damage. Utility Model Content

[0003] The purpose of the utility model is to provide a new clamping device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a clamping device, comprising:

[0005] A clamping jaw, wherein a plurality of the clamping jaws are provided, and the plurality of the clamping jaws can be arranged relatively far away or close to each other, and a clamping space is formed between the plurality of the clamping jaws;

[0006] The supporting member has a first end and a second end which are respectively arranged at two different ends in the length direction, the first end is fixedly arranged with the lower part of the clamping jaw, the second end extends toward the clamping space, and the supporting member has a supporting surface facing upwards.

[0007] The clamping device further comprises a shielding member extending in the up-down direction, wherein the upper portion of the shielding member is connected to the clamping claw, and the lower portion of the shielding member is movably arranged along the length extension direction of the supporting member.

[0008] The clamping device has at least a first state and a second state. When the clamping device is in the first state, the lower portion of the shielding member is retracted relative to the clamping claw, and the supporting surface is exposed;

[0009] When the clamping device is in the second state, the lower portion of the shielding member approaches the second end portion, the shielding member shields the upper portion of the supporting member, and the supporting surface is shielded by the shielding member.

[0010] Preferably, an elastic member is provided between the shielding member and the clamping jaw, and the elastic member is configured to provide a force to drive the lower portion of the shielding member away from the clamping jaw.

[0011] In some embodiments, the shielding member has a first surface facing the clamping space, and when the clamping device is in the first state, the clamping space is formed between multiple first surfaces and the supporting surface; when the clamping device is in the second state, the first surfaces extend obliquely from top to bottom and from the clamping claw to the second end.

[0012] Preferably, when the clamping device is in the second state, the lower edge of the first surface is flush with the edge of the second end, or, in the direction toward the clamping space, the lower edge of the first surface slightly protrudes beyond the edge of the second end.

[0013] In some embodiments, the clamping jaw is provided with a receiving groove with a notch facing the clamping space, and when the clamping device is in the first state, the shielding member is received in the receiving groove.

[0014] In some embodiments, a limiting groove is provided on the supporting member, and the limiting groove extends along the length direction of the supporting member. A limiting member is provided at the lower portion of the shielding member, and the limiting member is inserted into the limiting groove in a sliding manner.

[0015] Preferably, the shielding member has a main body and a limiting portion, the lower portion of the main body can be movably arranged relative to the supporting member, the limiting portion is fixedly arranged at the lower portion of the main body, and the limiting portion is located between the main body and the clamping claw, and the limiting member is fixedly arranged on the limiting portion.

[0016] A receiving groove is provided at the lower part of the clamping claw, and when the clamping device is in the first state, the limiting portion is received in the receiving groove.

[0017] In some embodiments, the shielding member has a main body and a connecting portion, the connecting portion is fixedly connected to the clamp, the upper end of the main body is rotatably arranged with the connecting portion around a rotation center line, the lower end of the main body can be movably arranged relative to the supporting member, and the extension direction of the rotation center line is perpendicular to the length extension direction of the clamp.

[0018] In some embodiments, the clamping device has a clamping mechanism, which includes a clamping member and a clamping driving member that drives the clamping member to rise and fall, and the clamping member has a clamping surface facing downward. When the clamping device is in the first state, the clamping space is formed between the clamping surface, the supporting surface, and the clamping claw.

[0019] Preferably, the clamping device is provided with a plurality of clamping arms, and the plurality of clamping arms can be arranged relatively far away or close to each other, the clamping claws are fixed at the lower part of the clamping arms, and each of the clamping arms is provided with a clamping mechanism.

[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the clamping device of the utility model has a supporting member, and when clamping goods, the supporting member can be supported on the bottom of the goods to improve the stability of clamping, and the clamping device is also provided with a shielding member. When the clamping device is in a first state, the shielding member is retracted relative to the clamping claws, and the supporting surface of the supporting member is exposed, so that the clamping device can stably clamp the goods; when the clamping device is in a second state, the shielding member shields the supporting member to prevent the supporting member from rubbing against the surface of the goods during the lifting process, and at the same time, the obliquely extended shielding member can slide in cooperation with the surface of the goods to prevent the supporting member from contacting the surface of the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of a clamping device in a specific embodiment of the utility model in a second state;

[0022] Attached Figure 2 For attachment Figure 1 Front view of

[0023] Attached Figure 3 For attachment Figure 2 The enlarged schematic diagram of point A in the middle;

[0024] Attached Figure 4 for Figure 1 Side view of

[0025] Attached Figure 5 For attachment Figure 1 Schematic diagram of the middle pressing member after it moves upward;

[0026] Attached Figure 6 For attachment Figure 5 The enlarged schematic diagram of point B in the middle;

[0027] Attached Figure 7 A three-dimensional schematic diagram of a partial structure of a clamping device according to another embodiment;

[0028] Attached Figure 8 For attachment Figure 7 The enlarged schematic diagram of the center C;

[0029] Attached Fig. 9 For attachment Figure 7 A schematic diagram of the clamping device in a first state;

[0030] Attached Fig.10 For attachment Fig. 9 The enlarged schematic diagram of point D in the middle;

[0031] Attached Fig.11 For attachment Fig. 9 Side view of

[0032] Attached Fig.12For the attachment Fig.11 Schematic cross-sectional view in the middle PP direction;

[0033] Attached Fig.13 For attachment Fig.12 The enlarged schematic diagram of point E in the middle;

[0034] Attached Fig.14 For attachment Fig. 9 A partially exploded schematic diagram of

[0035] Attached Fig.15 For attachment Fig.14 The enlarged schematic diagram of F in the middle;

[0036] Among them: 1. Clamping claw; 10. Clamping space; 11. Accommodating groove; 12. Receiving groove; 13. Mounting groove; 2. Supporting member; 2a. First end; 2b. Second end; 21. Support surface; 22. Limiting groove; 3. Shielding member; 31. Main body; 311. First surface; 32. Connecting part; 33. Limiting part; 4. Elastic member; 5. Limiting member;

[0037] 100, clamping arm; 200, clamping mechanism; 210, clamping member; 220, clamping drive assembly; 230, guide column; 310, lifting column; 320, lifting drive mechanism; 410, clamping seat; 420, clamping drive mechanism. DETAILED DESCRIPTION

[0038] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, so that the advantages and features of the utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only part of the embodiments of the application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0039] See also Figures 1 to 5 A clamping device shown includes a clamping jaw 1 and a supporting member 2, wherein a plurality of clamping jaws 1 are provided, and the plurality of clamping jaws 1 can be arranged relatively far away or close to each other, and a clamping space 10 is formed between the plurality of clamping jaws 1. By driving the clamping jaws 1 to move toward the object in the clamping space 10, the object is clamped. The supporting member 2 has a first end 2a and a second end 2b respectively arranged at two different ends in the length direction, the first end 2a is fixedly arranged with the lower part of the clamping jaw 1, and the second end 2b extends toward the clamping space. The supporting member 2 has a supporting surface 21 facing upwards, and when clamping an object, the supporting member 2 can be supported under the object, and the supporting surface 21 abuts against the bottom surface of the object to maintain the stability of the object.

[0040] The clamping device also includes a shielding member 3 extending in the up-down direction, the upper part of the shielding member 3 is connected to the clamping jaw 1, and the lower part of the shielding member 3 can be movably arranged along the length extension direction of the supporting member 2. The clamping device has at least a first state and a second state. When the clamping device is in the first state, the lower part of the shielding member 3 is retracted relative to the clamping jaw 1, and the supporting surface 21 is exposed. In this state, the object can be clamped. When the clamping device is in the second state, the lower part of the shielding member 3 approaches the second end 2b, the shielding member 3 is blocked above the supporting member 2, and the supporting surface 21 is blocked by the shielding member 3. In this state, the clamping jaw 1 is lifted upward. Since the shielding member 3 is blocked, it can effectively prevent the supporting member 2 from contacting with the surface of the object, thereby preventing the supporting member 2 from damaging the surface of the object during the lifting process.

[0041] In this embodiment, an elastic member 4 is provided between the shielding member 3 and the clamping jaw 1. The elastic member 4 is used to provide a force to drive the lower part of the shielding member 3 away from the clamping jaw 1. Before clamping the object, the clamping device is maintained in the second state under the drive of the elastic member 4. Specifically, the elastic member 4 is a spring arranged between the clamping jaw 1 and the shielding member 3. When clamping the object, the clamping jaw 1 is driven to approach the object. During this process, the shielding member 3 contacts the object. Under the drive of the reverse force of the object, the elastic member 4 is compressed, and the shielding member 3 is retracted relative to the clamping jaw 1. In the process of the shielding member 3 retracting relative to the clamping jaw 1, the supporting member 2 is gradually exposed and inserted at the bottom of the object, and the supporting surface 21 is also gradually exposed and in contact with the bottom surface of the object. In the process of the clamping jaw 1 relatively moving away from and releasing the clamped object, under the action of the force of the elastic member 4 to restore the original state, not only the shielding member 3 can be driven away from the clamping jaw 1, but also the clamping jaw 1 can be driven away from the object.

[0042] In some embodiments, the clamping jaw 1 is also provided with a buffer structure, which can prevent the clamping jaw 1 from directly hitting the object and causing damage when clamping the object. In this embodiment, the elastic member 4 and the shielding member 3 constitute the above-mentioned buffer structure, and when clamping the object, the shielding member 3 first contacts the surface of the object, and the shielding member 3 can move relative to the clamping jaw 1. The elastic member 4 disposed between the clamping jaw 1 and the shielding member 3 offsets the impact force generated by the contact, thereby avoiding damage to the object.

[0043] In this embodiment, the clamping jaw 1 is provided with a receiving groove 11 with a notch facing the clamping space, and the elastic member 4 is arranged in the receiving groove 11. When the clamping device is in the first state, the shielding member 3 is accommodated in the receiving groove 11, and the elastic member 4 is also accommodated in the receiving groove 11. In this embodiment, multiple groups of elastic members 4 are arranged between each clamping jaw 1 and the shielding member 3. Specifically, between the clamping jaw 1 and the shielding member 3, three rows of elastic members 4 are arranged at intervals along the up and down direction, and each row is provided with a total of 4. The provision of multiple elastic members 4 can provide sufficient elastic force. The receiving groove 11 is provided with mounting grooves 13 corresponding to the number of elastic members 4. One end of the spring is fixed in the mounting groove 13, and the other end of the spring is fixedly connected to the shielding member 3.

[0044] In this embodiment, the shielding member 3 has a first surface 311 facing the clamping space. When the clamping device is in the first state, the clamping space is formed between the plurality of first surfaces 311 and the support surface 21. In this state, the first surface 311 constitutes a clamping surface for clamping an object. The first surface 311 is pressed against the peripheral side of the object, thereby forming a lateral clamping force. When the clamping device is in the second state, driven by the elastic member 4, the first surface 311 extends obliquely from top to bottom and from the clamping claw 1 to the second end 2b. In this state, the inclined first surface 311 can slide in cooperation with the surface of the object, thereby driving the surface of the object and the supporting member 2 away from each other to avoid damage to the object.

[0045] In some preferred embodiments, the clamping device is in the second state, the lower edge of the first surface 311 is flush with the edge of the second end portion 2b, and the shielding member 3 just shields the supporting member 2. In the process of lifting the clamping jaw 1, under the guidance of the first surface 311, the supporting member 2 can be prevented from contacting with the surface of the object. In other preferred embodiments, along the direction toward the clamping space, the lower edge of the first surface 311 slightly protrudes from the edge of the second end portion 2b. In this way, in the process of lifting the clamping jaw 1, even if the shielding member 3 is driven to move toward the clamping jaw 1 during the process of the first surface 311 contacting with the surface of the object, the shielding member 3 can still shield the supporting member 2 and achieve the effect of preventing scratches. At the same time, in order to adapt to a smaller clamping space, the lower edge of the first surface 311 only protrudes a small distance. In this embodiment, see. Figure 3 As shown, the lower edge of the first surface 311 slightly protrudes from the edge of the second end portion 2b.

[0046] In some embodiments, a guide structure is provided between the supporting member 2 and the shielding member 3 to provide a motion guide for the relative movement between the two. In other embodiments, a limit structure is provided between the supporting member 2 and the shielding member 3 to prevent the shielding member 3 from moving beyond the range of the accommodating space under the drive of the elastic member 4 in the second state.

[0047] In this embodiment, a limiting groove 22 is provided on the supporting member 2, and a limiting member 5 is provided at the lower part of the shielding member 3. The limiting groove 22 extends along the length direction of the supporting member 2, and the limiting member 5 is inserted in the limiting groove 22 in a sliding manner. The limiting groove 22 and the limiting member 5 constitute the above-mentioned guide structure, and the limiting member 5 slides in the limiting groove 22 in cooperation, thereby realizing the guide function. At the same time, the limiting groove 22 and the limiting member 5 also constitute the above-mentioned limiting structure. Through the cooperation between the limiting member 5 and the groove wall of the limiting groove 22, in the second state, the limiting member 5 can abut against the groove wall of the limiting groove 22 close to the second end 2b, thereby effectively preventing the shielding member 3 from moving beyond the range.

[0048] In this embodiment, the shielding member 3 has a main body 31 and a limiting portion 33. The lower portion of the main body 31 can be movably arranged relative to the supporting member 2. The limiting portion 33 is fixedly arranged at the lower portion of the main body 31. The limiting member 5 is fixedly arranged on the limiting portion 33. Specifically, the limiting portion 33 is located between the main body 31 and the clamping jaw 1. Figure 3 , Figure 6 As shown, the limiting portion 33 is integrally provided with the main body 31 , and the limiting portion 33 is bent from the lower end of the main body 31 toward the clamping jaw 1 , and the limiting member 5 is a limiting pin fixedly provided on the limiting portion 33 .

[0049] In another embodiment, see Figure 7 , Figure 8 as well as Fig.14 , Fig.15 As shown, the limiting portion 33 is a limiting block fixedly connected to the lower part of the main body 31, and the limiting block is located between the main body 31 and the clamping jaw 1. The limiting member 5 is fixedly arranged at the lower part of the limiting portion 33, and includes an insertion portion extending in the up-down direction, and a flange arranged at the bottom of the insertion portion, the cross section of the flange is larger than the insertion portion, and the size of the flange is larger than the size of the limiting groove 22. The insertion portion can be inserted in the limiting groove 22 in a sliding manner, and the flange can abut against the bottom of the supporting member 2, thereby limiting the displacement of the limiting member 5 in the up-down direction and preventing the limiting member 5 from being separated from the limiting groove 22.

[0050] In some preferred embodiments of the present invention, a receiving groove 12 is provided at the lower part of the clamping jaw 1, and when the clamping device is in the first state, the limiting portion 33 is received in the receiving groove 12. Figures 9 to 13 As shown, in the first state, the first surface 311 can be flush with the inner side surface of the clamping jaw 1, so as to jointly form a clamping surface for clamping an object.

[0051] In this embodiment, the shielding member 3 further has a connecting portion 32, the connecting portion 32 is fixedly connected to the clamping jaw 1, and the upper end of the main body 31 is rotatably arranged with the connecting portion 32 around the rotation center line X, and the extension direction of the rotation center line X is perpendicular to the length extension direction of the clamping jaw 1. Specifically, the main body 31 and the connecting portion 32 are integrally arranged, and the shielding member 3 is made of a material that can be elastically deformed, so that the main body 31 can be folded relative to the connecting portion 32, and the main body 31 and the connecting portion 32 can be switched between the state of being at an obtuse angle and extending along the same length direction.

[0052] In other embodiments, the upper portion of the shielding member 3 is directly rotatably connected to the clamping jaw 1, so that the shielding member 3 can rotate relative to the clamping jaw 1, thereby realizing that the shielding member 3 is folded relative to the clamping jaw 1 and the lower portion of the shielding member 3 approaches the second end portion 2b. In other embodiments, the upper portion of the shielding member 3 rotates with the clamping jaw 1 and can be relatively slidably arranged along the length direction of the clamping jaw 1. During the process of the clamping device switching to the second state, the shielding member 3 can move downward as a whole, so that in the second state, the lower end portion of the shielding member 3 can abut against the second end portion 2b.

[0053] In this embodiment, the clamping device is provided with a plurality of clamping arms 100, which can be arranged relatively far away or close to each other, and the clamping jaw 1 is fixedly arranged at the lower part of the clamping arm 100, and the clamping jaw 1 is driven to clamp or release by driving the clamping arm 100 to move. Figure 1 , Figure 2 As shown, the clamping device is provided with two clamping arms 100, each clamping arm 100 is provided with a clamping claw 1 at the lower part, and the two clamping arms 100 can be arranged relatively far away or close to each other along a first direction. The clamping device also includes a clamping seat 410 and a clamping drive mechanism 420, the clamping arm 100 is arranged on the clamping seat 410 to move along the first direction, and the clamping drive mechanism 420 is used to drive the clamping arm 100 to move.

[0054] In this embodiment, the clamping device is further provided with a lifting column 310 extending in the up-down direction and a lifting drive mechanism 320. The clamping seat 410 is arranged on the lifting column 310 so as to be movable in the up-down direction. The lifting drive mechanism 320 is used to drive the clamping seat 410 to move up and down. The clamping drive mechanism 420 can adjust the positions of the two clamping jaws 1 and the distance between the two clamping jaws 1 so as to correspond to the clamped object located below. Then, the lifting drive mechanism 320 drives the clamping seat 410 to move downward, and drives the clamping jaws 1 to move downward to the clamping position. Then, the clamping drive mechanism 420 drives the two clamping jaws 1 to move relative to each other again to realize the clamping operation.

[0055] In this embodiment, the clamping device also has a clamping mechanism 200, which includes a clamping member 210 and a clamping drive assembly 220 that drives the clamping member 210 to move up and down. The clamping mechanism 200 can clamp the object between the clamping member 210 and the supporting member 2, so that the object can remain stable in the up and down directions.

[0056] Specifically, the pressing member 210 has a pressing surface facing downward, and when the clamping device is in the first state, the above-mentioned clamping space 10 is formed between the pressing surface, the supporting surface 21, and the clamping claw 1. When the object is clamped by the clamping device, the pressing surface contacts and presses against the upper surface of the object, and the supporting surface 21 contacts and presses against the bottom surface of the object, and the object is clamped and fixed in the up and down direction.

[0057] See also Figure 1 , Figure 5 As shown, in this embodiment, each clamping arm is provided with a clamping mechanism 200. The clamping mechanism 200 also includes a guide column 230 extending in the up-down direction, the lower end of the guide column 230 is fixedly connected to the clamping member 210, and the guide column 230 can cooperate with the clamping arm 100 to provide guidance for the up-down movement of the clamping member 210. In this embodiment, the clamping member 210 is plate-shaped, and the clamping drive assembly 220 includes a driving cylinder or a driving electric cylinder, and the output shaft of the driving cylinder or the driving electric cylinder is connected to the clamping member 210, thereby driving the clamping member 210 to move up and down.

[0058] In summary, the clamping device of this embodiment is in the second state when not clamping an object, and clamps the object by driving the clamping jaw 1 to move toward the object in the clamping space 10 and driving the pressing member 210 to move downward relative to the object. In this process, the shielding member 3 is driven to close to the clamping jaw 1, and the supporting surface 21 is gradually exposed.

[0059] When the article is clamped by the clamping device, the clamping device is converted to the first state. In this state, the first surface 311 is pressed against the side of the article to form a lateral clamp. In the vertical direction, the article is clamped between the pressing member 210 and the supporting member 2 to form a vertical clamp. The article is located in the clamping space formed by the first surface 311, the supporting surface 21 and the pressing surface, and the article can be stably clamped. The article is released by driving the clamping jaw 1 relatively away and driving the pressing member 210 to move upward. In this process, under the drive of the elastic member 4, the lower part of the shielding member 3 moves away from the clamping jaw 1 and approaches the second end 2b. When the clamping jaw 1 releases the article, the clamping device is converted to the second state again. In this state, the shielding member 3 not only shields the supporting member 2, but also its inclined extended first surface 311 plays a role of guiding and avoiding, which is used to prevent the supporting member 2 from scratching the surface of the article in the process of lifting the clamping jaw 1. The clamping device has a simple structure and can provide a more stable and reliable clamping operation under limited space conditions, and can effectively avoid damage to the object due to contact between the clamping jaw 1 and the surface of the object during the process of lifting the clamping jaw 1.

[0060] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A clamping device, comprising: A clamping jaw, wherein a plurality of the clamping jaws are provided, and the plurality of the clamping jaws can be arranged relatively far away or close to each other, and a clamping space is formed between the plurality of the clamping jaws; The supporting member has a first end and a second end which are respectively arranged at two different ends in the length direction, the first end is fixedly arranged with the lower part of the clamping jaw, the second end extends toward the clamping space, and the supporting member has a supporting surface facing upwards. The clamping device is characterized in that: the clamping device further comprises a shielding member extending in the up-down direction, the upper portion of the shielding member is connected to the clamping claw, and the lower portion of the shielding member can be movably arranged along the length extension direction of the supporting member, The clamping device has at least a first state and a second state. When the clamping device is in the first state, the lower portion of the shielding member is retracted relative to the clamping claw, and the supporting surface is exposed; When the clamping device is in the second state, the lower portion of the shielding member approaches the second end portion, the shielding member shields the upper portion of the supporting member, and the supporting surface is shielded by the shielding member.

2. The clamping device according to claim 1, characterized in that: An elastic member is provided between the shielding member and the clamping jaw, and the elastic member is configured to provide a force to drive the lower portion of the shielding member away from the clamping jaw.

3. The clamping device according to claim 1, characterized in that: The shielding member has a first surface facing the clamping space, and when the clamping device is in the first state, the clamping space is formed between multiple first surfaces and the supporting surface; when the clamping device is in the second state, the first surfaces extend obliquely from top to bottom and from the clamping claw to the second end.

4. The clamping device according to claim 3, characterized in that: When the clamping device is in the second state, the lower edge of the first surface is flush with the edge of the second end, or, in the direction toward the clamping space, the lower edge of the first surface slightly protrudes beyond the edge of the second end.

5. The clamping device according to claim 1, characterized in that: The clamping claw is provided with a receiving groove with a notch facing the clamping space, and when the clamping device is in the first state, the shielding member is accommodated in the receiving groove.

6. The clamping device according to claim 1, characterized in that: The supporting member is provided with a limiting groove, and the limiting groove extends along the length direction of the supporting member. The lower part of the shielding member is provided with a limiting member, and the limiting member is inserted into the limiting groove in a sliding manner.

7. The clamping device according to claim 6, characterized in that: The shielding member comprises a main body and a limiting portion, the lower portion of the main body can be movably arranged relative to the supporting member, the limiting portion is fixedly arranged at the lower portion of the main body, and the limiting portion is located between the main body and the clamping claw, and the limiting member is fixedly arranged on the limiting portion. A receiving groove is provided at the lower part of the clamping claw, and when the clamping device is in the first state, the limiting portion is received in the receiving groove.

8. The clamping device according to claim 1, characterized in that: The shielding member has a main body and a connecting portion, the connecting portion is fixedly connected to the clamp, the upper end of the main body is rotatably arranged around a rotation center line and the connecting portion, the lower end of the main body can be movably arranged relative to the supporting member, and the extension direction of the rotation center line is perpendicular to the length extension direction of the clamp.

9. The clamping device according to any one of claims 1 to 8, characterized in that: The clamping device has a clamping mechanism, which includes a clamping member and a clamping driving member that drives the clamping member to move up and down, and the clamping member has a clamping surface facing downward. When the clamping device is in the first state, the clamping space is formed between the clamping surface, the supporting surface, and the clamping claws.

10. The clamping device according to claim 9, characterized in that: The clamping device is provided with a plurality of clamping arms, and the plurality of clamping arms can be arranged relatively far away or close to each other. The clamping claws are fixed at the lower part of the clamping arms, and each of the clamping arms is provided with a clamping mechanism.

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