Lifting appliance for workpiece with hole

Abstract

The utility model relates to the technical field of lifting appliances, in particular to a lifting appliance for workpieces with holes, which comprises a base, a first lifting component and a second lifting component. The first hoisting assembly comprises a first driving piece and an expansion head connected with the first driving piece; the second hoisting assembly comprises a second driving piece and clamping parts connected with the second driving piece, and the clamping parts are arranged on the two sides of the expansion head. The expansion head can be driven to be opened through the first driving part so that the expansion head can be clamped in the hole of the workpiece with the hole, or the expansion head can be folded through the first driving part so that the expansion head can retreat from the hole of the workpiece with the hole; and meanwhile, the workpiece is clamped through the second hoisting assembly. According to the lifting appliance, the labor intensity of manually carrying the workpiece with the hole can be reduced, and the working efficiency and the safety in the carrying process of the workpiece with the hole are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, and more specifically, to a hoisting device for a workpiece with a hole. Background Art

[0002] In the process of product manufacturing, sometimes the workpiece needs to be moved to the assembly area for installation. Some parts are heavy, such as the differential assembly. If they are moved manually, the efficiency is low and the labor intensity is high. Usually, a hoist is used to fix the workpiece before hoisting.

[0003] Most existing hoists are clamping structures with claws, which may cause the workpiece to fall due to the loose claws. If a complex fixing structure is used to connect the hoist and the workpiece, it will take too long to fix and remove the hoist, affecting the hoisting efficiency. Therefore, a new hoist is designed for workpieces with holes. Utility Model Content

[0004] The utility model aims to overcome the problem of low workpiece handling efficiency in the prior art and provides a hoisting device for workpieces with holes, which has high hoisting efficiency and better safety.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A hoist for a workpiece with a hole, comprising a base and a first hoisting assembly and a second hoisting assembly connected to the base; the first hoisting assembly comprises a first driving member and an expansion head connected to the first driving member; the second hoisting assembly comprises a second driving member and a clamping member connected to the second driving member, and the clamping members are arranged on both sides of the expansion head.

[0007] In the technical solution of the utility model, when the sling of the utility model is used for lifting and transporting, the sling is first placed above the workpiece with a hole, the sling is lowered to allow the expansion head to enter the hole of the workpiece, the expansion head is opened by the first driving member to be clamped in the hole of the workpiece with a hole, and the clamping component is driven by the second driving member to clamp the workpiece with a hole, so that the fixture and the workpiece with a hole are fixed. Then, the sling is raised and moved to transport the workpiece with a hole to a specified position, and the clamping component is released by the second driving member, and the first driving member causes the expansion head to be retracted and withdrawn from the hole of the workpiece with a hole. At this time, the fixture can be detached from the workpiece with a hole, thus completing a transport process. The sling for workpieces with holes of the utility model can reduce the labor intensity of manual transport of workpieces, and the fixing and detaching process of the fixture is simple, which can effectively improve work efficiency. Since the first lifting assembly and the second lifting assembly are used to fix the workpiece with a hole at the same time, the workpiece with a hole can be prevented from falling off during transportation, and the safety is higher.

[0008] In some preferred embodiments, the first driving member is a linear motion mechanism, the linear motion mechanism includes a fixed end and a movable end, the fixed end is fixedly connected to the base, and the movable end is assembled through the expansion head. In this embodiment, the movable end can be in a first position to squeeze the expansion head to expand, and the expansion head is clamped in the hole of the workpiece with a hole after being expanded, or in a second position to collapse the expansion head, and the cross-sectional diameter of the collapsed expansion head is smaller than the hole diameter of the workpiece with a hole.

[0009] In some preferred embodiments, the linear motion mechanism is a cylinder, which includes a cylinder body and a piston rod, wherein the cylinder body is fixedly connected to the base, and the piston rod passes through the expansion head for coaxial assembly.

[0010] In some preferred embodiments, a mounting component is further included, one end of which is connected to the fixed end of the linear motion mechanism, the other end of which is connected to the expansion head, and a channel for the movement of the movable end is provided in the mounting component.

[0011] In some preferred embodiments, the mounting component includes a first mounting member and a second mounting member, the first mounting member and the second mounting member are connected along the channel direction, one end of the first mounting member is detachably connected to the fixed end of the linear motion mechanism, the other end of the first mounting member is connected to one end of the second mounting member, and the expansion head is connected to the other end of the second mounting member.

[0012] In some preferred embodiments, the second mounting member includes a first enclosed portion and a second enclosed portion, and a groove is provided in the middle of the first enclosed portion and the second enclosed portion along the movement direction of the moving end of the linear motion mechanism. When the first enclosed portion and the second enclosed portion are assembled, the grooves of the two together constitute a channel for the moving end of the linear motion mechanism to move.

[0013] In some preferred embodiments, the end of the expansion head away from the second mounting member is an expansion portion, an inner track is provided in the expansion head, an expansion section is connected to the end of the moving end of the linear motion mechanism, the diameter of the expansion section is larger than the diameter of the inner track, and the expansion section is located at the end of the expansion portion away from the cylinder.

[0014] In some preferred embodiments, the expansion head further includes a protrusion extending radially along the expansion head, a positioning groove matching the protrusion is provided in the channel of the mounting member, and the diameter of the positioning groove is larger than the diameter of the channels at both ends of the positioning groove.

[0015] In some preferred embodiments, the second driving member is a clamping mechanism, the two clamping mechanisms are respectively connected to the two sides of the mounting component, the clamping component includes two clamping members, and the two clamping ends of the clamping mechanism are both connected to the clamping members.

[0016] In some preferred embodiments, the clamping mechanism is a pneumatic clamp.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model of the sling for the workpiece with a hole comprises a base, a first sling assembly and a second sling assembly, wherein the first sling assembly comprises a first driving member and an expansion head, and the second sling assembly comprises a second driving member and a clamping component. When using the sling of the utility model, the sling is first placed above the workpiece with a hole, the sling is lowered to allow the expansion head to enter the hole of the workpiece, the expansion head is stretched open by the first driving member to be clamped in the hole of the workpiece with a hole, and the clamping component is driven by the second driving member to clamp the workpiece with a hole, thus completing the fixation between the fixture and the workpiece with a hole. Subsequently, the sling is raised and moved to carry the workpiece with a hole to a designated position, and then the clamping component is released by the second driving member, and the first driving member causes the expansion head to be retracted and withdrawn from the hole of the workpiece with a hole, at which time the fixture can be detached from the workpiece with a hole, thus completing a handling process. The sling of the utility model can reduce the labor intensity of manually carrying workpieces, and the fixing and detaching process of the fixture is simple, which can effectively improve work efficiency. The first lifting assembly and the second lifting assembly are used to fix the workpiece with a hole, so that the workpiece with a hole can be prevented from falling off during transportation, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an axonometric diagram of the overall structure of the utility model's hanger for workpieces with holes;

[0020] Figure 2 This is a front view of the utility model's hanger for workpieces with holes;

[0021] Figure 3 It is a left view of the utility model of the hanger for the workpiece with a hole;

[0022] Figure 4 It is a schematic diagram of the structure of the installation component of the hanger for a workpiece with a hole of the utility model;

[0023] Figure 5 It is a cross-sectional view of a second mounting member of the hanger for a workpiece with a hole of the utility model;

[0024] Figure 6 It is a schematic diagram of the expansion head structure of the utility model used for the hanger of the workpiece with a hole;

[0025] Figure 7 It is a partial enlarged view when the first driving member does not expand the expansion head;

[0026] Figure 8 It is a schematic diagram of the structure of the clamping part.

[0027] In the attached figure:

[0028] 1. Base; 2. First lifting assembly; 201. First driving member; 201-1. Enlarged section; 202. Expansion head; 202-1. Protrusion; 202-2. Transition part; 202-3. Expansion part; 3. Second lifting assembly; 301. Second driving member; 301-1. Driving end; 302. Clamping component; 302-1. Clamping member; 302-1-1. Connecting part, 302-1-2. Bearing part; 4. Mounting component; 401. First mounting member; 401-1. Flange; 402. Second mounting member; 402-1. First enclosed part; 402-2. Second enclosed part; 402-3. Positioning groove; 5. Control button; 6. Pneumatic pilot valve; 7. Lifting ring. DETAILED DESCRIPTION

[0029] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0032] Example 1

[0033] refer to Figures 1 to 3 The hanger for a workpiece with a hole in this embodiment includes a base 1, a first lifting component 2 and a second lifting component 3. The first lifting component 2 and the second lifting component 3 are installed at the bottom of the base 1, and the first lifting component 2 and the second lifting component 3 are assembled toward one side of the workpiece with a hole to be lifted.

[0034] In this embodiment, the first lifting component 2 includes a first driving member 201 and an expansion head 202, and the expansion head 202 is arranged on one side of the output end of the first driving member 201. The expansion head 202 can be directly connected to the fixed part of the first driving member 201, or it can be connected by an intermediate part. When the first lifting component 2 passes through the hole of the workpiece with a hole when lifting the workpiece with a hole, the first driving member 201 of the first lifting component 2 can drive the expansion head 202 to open so that the expansion head 202 is clamped in the hole of the workpiece with a hole, or the first driving member 201 causes the expansion head 202 to retract so that the expansion head 202 can withdraw from the hole of the workpiece with a hole. The second lifting component 3 includes a second driving member 301 and a clamping component 302, and the clamping component 302 is connected to the moving end of the second driving member, and the clamping component 302 is driven by the second driving member 301 to clamp or release the workpiece with a hole.

[0035] The working process of the hanger for workpieces with holes in this embodiment is as follows: first, the hanger for workpieces with holes is placed at a corresponding position above the workpieces with holes, the hanger for workpieces with holes is lowered so that the expansion head 202 passes through the hole of the workpieces with holes, the expansion head 202 is stretched open by the first driving member 201 to be clamped in the hole of the workpieces with holes, and the clamping member 302 is driven by the second driving member 301 to clamp the corresponding position of the workpieces with holes, so as to complete the fixation between the fixture and the workpieces with holes. After the hanger for workpieces with holes is raised and moved to carry the workpieces with holes to the designated position, the clamping member 302 is released by the second driving member 301, and the expansion head 202 is retracted and withdrawn from the hole of the workpieces with holes by the first driving member 201, and the fixture can be separated from the workpiece, thus completing a handling process. The hanger for workpieces with holes in this embodiment can reduce the labor intensity of manually carrying workpieces with holes, and the fixing and separation process of the fixture is simple, which can effectively improve work efficiency. At the same time, the first lifting assembly 2 and the second lifting assembly 3 are used to fix the workpiece with holes, which can prevent the workpiece with holes from falling off during transportation, thereby improving safety.

[0036] The first driving member 201 of this embodiment is a linear motion mechanism, which includes a fixed end and a movable end, wherein the fixed end is fixedly connected to the base 1, and the movable end is assembled through the expansion head 202. More specifically, the linear motion mechanism is preferably a cylinder, which includes a cylinder body and a piston rod, wherein the cylinder body is fixedly connected to the base 1, and the piston rod is coaxially assembled with the expansion head 202, so that the piston rod of the cylinder can be in the first position to squeeze the expansion head 202 to open, and the expansion head 202 is clamped in the hole of the workpiece with a hole after being stretched; or in the second position to close the expansion head 202, and the cross-sectional diameter of the expansion head 202 after closing is smaller than the hole diameter of the workpiece with a hole. The clamping between the expansion head 202 and the hole can be either an interference fit between the expansion head 202 and the hole after expansion, or the diameter of the expansion head 202 after expansion is larger than the outlet diameter of the workpiece hole. Of course, in some other embodiments, the first driving member 201 can also be replaced by other linear motion mechanisms, such as a hydraulic cylinder, an electric push rod, etc. In some embodiments, a pneumatic pilot valve 6 may be connected in the gas circuit of the cylinder, and the pneumatic pilot valve 6 is fixedly connected to the base 1 to prevent the cylinder from falling due to gas failure. The connection method of the pneumatic pilot valve 6 in the gas circuit is well known to those skilled in the art and will not be described in detail here.

[0037] refer to Figures 1 to 4 The hanger for workpieces with holes in this embodiment further includes a mounting member 4, one end of which is connected to the fixed end of the linear motion mechanism, and the other end of which is connected to the expansion head 202. A channel for the movement of the mobile end is provided in the mounting member 4. The cylinder and the expansion head 202 are connected by the mounting member 4. The installation position of the expansion head 202 can be adjusted by selecting a suitable mounting member 4, which facilitates modular adjustment of the device structure. At the same time, other structures can be further connected to the mounting member 4 to improve the scalability of the device structure.

[0038] refer to Figure 4 and Figure 5 The second mounting member 402 includes a first enclosed portion 402-1 and a second enclosed portion 402-2. The middle parts of the first enclosed portion 402-1 and the second enclosed portion 402-2 are provided with grooves along the moving direction of the moving end of the linear motion mechanism. When the first enclosed portion 402-1 and the second enclosed portion 402-2 are assembled, the grooves of the two together form a channel for the moving end of the linear motion mechanism to move. Specifically, the upper ends of the first enclosed portion 402-1 and the second enclosed portion 402-2 are connected to the bottom flange 401-1 of the first mounting member 401 by bolts. In this embodiment, the second mounting member 402 is divided into two detachable parts, which is convenient for opening the required groove structure.

[0039] refer to Figure 6 and Figure 7In this embodiment, the linear motion mechanism is a cylinder. The end of the expansion head 202 away from the second mounting member 402 is the expansion portion 202-3. The expansion head 202 is provided with a through inner channel along the movement direction of the piston rod after assembly. The diameter of the piston rod matches the diameter of the inner channel of the expansion head 202. Figure 7 The end of the piston rod is connected with an expansion section 201-1, and the expansion section 201-1 is a conical surface with a diameter expanding outward. The overall diameter of the expansion section 201-1 is larger than the diameter of the inner channel. The piston rod is assembled through the inner channel of the expansion head 202 and the expansion section 201-1 is located outside the side of the expansion part 202-3 away from the cylinder. When the piston rod is in the first position, the expansion section 201-1 is retracted into the inner channel of the expansion part 202-3. At this time, the expansion part 202-3 is engaged with the hole of the workpiece with a hole. When the piston rod is in the second position, the expansion section 201-1 extends out of the inner channel of the expansion part 202-3. At this time, the outer diameter of the expansion part 202-3 is smaller than the hole diameter of the workpiece with a hole.

[0040] In this embodiment, the side wall of the expansion portion 202-3 is a plurality of strips that are evenly distributed along the circumference and can be elastically reset. When not squeezed by the expansion section 201-1, the expansion portion 202-3 is in a retracted state. At this time, the outer diameter of the expansion section 201-1 and the outer diameter of the expansion portion 202-3 are both smaller than the hole of the workpiece with a hole, and the expansion head 202 and the cylinder piston rod can pass through the hole. When the expansion section 201-1 of the piston rod moves toward the expansion portion 202-3, the expansion section 201-1 is squeezed into the inner channel of the expansion portion 202-3. At this time, the circumferential strips of the expansion portion 202-3 are expanded to the surroundings, so that the expansion portion 202-3 can be engaged with the hole of the workpiece with a hole after expansion. The workpiece with a hole is transported by lifting and moving the hanger for the workpiece with a hole. When the target position is reached, the enlarged section 201-1 is withdrawn from the inner track of the expansion part 202-3, the circumferential strips of the expansion part 202-3 can be elastically reset, and the expansion head 202 and the cylinder piston rod can withdraw from the hole.

[0041] refer to Figure 6 The expansion head 202 is composed of a protrusion 202-1, a transition portion 202-2 and an expansion portion 202-3 in the direction of the piston rod extending. The protrusion 202-1 extends radially along the expansion head 202. The transition portion 202-2 connects the protrusion 202-1 and the expansion portion 202-3. A positioning groove 402-3 matching the protrusion 202-1 is provided in the channel of the mounting component 4. The diameter of the positioning groove 402-3 is larger than the diameter of the channels at both ends. The expansion head 202 is connected to the mounting component 4 by placing the protrusion 202-1 in the positioning groove 402-3. Figures 4 to 6Since the second mounting member 4 includes the first enclosed portion 402-1 and the second enclosed portion 402-2, during installation, the protrusion 202-1 can be placed at the corresponding position of the first enclosed portion 402-1, and then the second enclosed portion 402-2 can be connected. In this way, the expansion portion 202-3 is clamped in the positioning groove 402-3, and the expansion head 202 and the mounting member 4 do not need to be fixed with bolts.

[0042] refer to Figures 1 to 3 In this embodiment, the second driving member 301 is a clamping mechanism, preferably a pneumatic clamp. The two pneumatic clamps are respectively connected to the two sides of the mounting member 4, and the clamping component 302 includes two clamps 302-1. The pneumatic clamp has two driving ends 301-1 that can move relatively, and each of the two driving ends 301-1 is connected to a clamp 302-1. In other words, the two clamps 302-1 of the clamping component 302 are connected between the two pneumatic clamps, and the two ends of each clamp 302-1 are respectively connected to the driving ends 301-1 corresponding to the pneumatic clamps on both sides. By connecting the two pneumatic clamps on both sides of the clamp 302-1, the two pneumatic clamps move synchronously during the working process. Since both ends of the clamp 302-1 are connected, the force load of the clamp 302-1 can be balanced, thereby improving the reliability of the operation of the clamp 302-1.

[0043] refer to Figure 8 The clamping member 302-1 has a connecting portion 302-1-1 and a bearing portion 302-1-2. The connecting portion 302-1-1 is connected to the driving end 301-1 of the pneumatic clamp. The bearing portion 302-1-2 and the connecting portion 302-1-1 can be integrally formed. The bearing portion 302-1-2 is arranged at the lower end of the connecting portion 302-1-1 and extends horizontally toward a side close to the expansion head 202. In this embodiment, the bottom of the workpiece can be supported by the bearing portion 302-1-2 of the clamping member 302-1, and the bearing portion 302-1-2 can also be extended into the lateral hole of the workpiece for clamping to further provide supporting force. In this way, if the first lifting component 2 fails, the second lifting component 3 can also be used to carry and clamp the workpiece with holes, thereby improving the safety of the lifting device.

[0044] refer to Figures 1 to 3 In this embodiment, the hanger for the workpiece with holes also includes a plurality of control buttons 5, each of which is mounted on the base 1 and connected to the first driving member 201 and the second driving member 301. The working states of the first driving member 201 and the second driving member 301 can be manually controlled by each control button 5, so that the user can adjust the hanger conveniently.

[0045] refer to Figures 1 to 3In this embodiment, a lifting ring 7 is connected to the top of the base 1, and the external lifting power equipment can be connected to the lifting ring 7 to facilitate the overall movement of the lifting device.

[0046] Example 2

[0047] refer to Figure 4 This embodiment is similar to the embodiment 1, except that the mounting member 4 in this embodiment includes a first mounting member 401 and a second mounting member 402, one end of the first mounting member 401 is detachably connected to the cylinder body of the cylinder by bolts, the other end of the first mounting member 401 is detachably connected to one end of the second mounting member 402 by bolts, and the expansion head 202 is connected to the other end of the second mounting member 402. The first mounting member 401 is I-shaped when viewed from the side, and its upper and lower ends are both flange 401-1 structures for threaded connection. The first mounting member 401 and the second mounting member 402 are both provided with through grooves in the vertical direction so that the piston rod can pass through from top to bottom. The mounting member 4 is divided into detachable parts to facilitate assembly and replacement of parts.

[0048] Example 3

[0049] refer to Figure 4 and Figure 5 This embodiment is similar to the embodiment 2, except that the second mounting member 402 includes a first enclosed portion 402-1 and a second enclosed portion 402-2, and the middle parts of the first enclosed portion 402-1 and the second enclosed portion 402-2 are provided with a groove along the moving direction of the moving end of the linear motion mechanism. When the first enclosed portion 402-1 and the second enclosed portion 402-2 are assembled, the grooves of the two together form a channel for the moving end of the linear motion mechanism to move. Specifically, the upper ends of the first enclosed portion 402-1 and the second enclosed portion 402-2 are connected to the bottom flange 401-1 of the first mounting member 401 by bolts. This embodiment divides the second mounting member 402 into two detachable parts, which is convenient for opening the required groove structure to facilitate the assembly of the expansion head 202.

[0050] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A hanger for a workpiece with a hole, characterized in that: It comprises a base (1) and a first hanging assembly (2) and a second hanging assembly (3) connected to the base (1); The first lifting assembly (2) comprises a first driving member (201) and an expansion head (202) connected to the first driving member (201); The second lifting assembly (3) comprises a second driving member (301) and a clamping member (302) connected to the second driving member (301), and the clamping member (302) is arranged on both sides of the expansion head (202).

2. The hanger for a workpiece with a hole according to claim 1, characterized in that: The first driving member (201) is a linear motion mechanism, comprising a fixed end and a movable end, the fixed end being fixedly connected to the base (1), and the movable end being assembled through the expansion head (202).

3. The hanger for a workpiece with a hole according to claim 2, characterized in that: The linear motion mechanism is a cylinder, which comprises a cylinder body and a piston rod. The cylinder body is fixedly connected to the base (1), and the piston rod passes through the expansion head (202) for coaxial assembly.

4. The hanger for a workpiece with a hole according to claim 2, characterized in that: It also comprises a mounting component (4), one end of which is connected to the fixed end of the linear motion mechanism, the other end of which is connected to the expansion head (202), and a channel for the movement of the movable end is provided inside the mounting component (4).

5. The hanger for a workpiece with a hole according to claim 4, characterized in that: The mounting member (4) comprises a first mounting member (401) and a second mounting member (402), wherein the first mounting member (401) and the second mounting member (402) are connected along a channel direction, one end of the first mounting member (401) is detachably connected to a fixed end of a linear motion mechanism, the other end of the first mounting member (401) is connected to one end of the second mounting member (402), and the expansion head (202) is connected to the other end of the second mounting member (402).

6. The hanger for a workpiece with a hole according to claim 5, characterized in that: The second mounting member (402) comprises a first enclosed portion (402-1) and a second enclosed portion (402-2), wherein the middle portions of the first enclosed portion (402-1) and the second enclosed portion (402-2) are provided with grooves along the movement direction of the moving end of the linear motion mechanism, and when the first enclosed portion (402-1) and the second enclosed portion (402-2) are assembled, the grooves of the two together form a channel for the moving end of the linear motion mechanism to move.

7. The hanger for a workpiece with a hole according to claim 2, characterized in that: The end of the expansion head (202) away from the second mounting member (402) is an expansion portion (202-3), an inner track is provided in the expansion head (202), an expansion section (201-1) is connected to the end of the moving end of the linear motion mechanism, the diameter of the expansion section (201-1) is greater than the diameter of the inner track, and the expansion section (201-1) is located at the end of the expansion portion (202-3) away from the cylinder.

8. The hanger for a workpiece with a hole according to claim 4, characterized in that: The expansion head (202) further comprises a protrusion (202-1) extending radially along the expansion head (202), a positioning groove (402-3) matching the protrusion (202-1) is provided in the channel of the mounting component (4), and the diameter of the positioning groove (402-3) is larger than the diameter of the channels at both ends of the positioning groove (402-3).

9. The hanger for a workpiece with a hole according to claim 4, characterized in that: The second driving member (301) is a clamping mechanism, and the two clamping mechanisms are respectively connected to two sides of the mounting component (4), the clamping component (302) comprises two clamping members (302-1), and the two clamping ends (301-1) of the clamping mechanism are both connected to the clamping members (302-1).

10. The hanger for a workpiece with a hole according to claim 9, characterized in that: The clamping mechanism is a pneumatic clamp.

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