A kiln roller rod recycling processing device

Abstract

The application discloses a kiln roller rod recycling processing device, which comprises a workbench, a roller rod fixing tool, a movable support, a lifting control rod and a cutting mechanism, the roller rod fixing tool is arranged on the workbench and is used for fixing the kiln roller rod, the movable support is movably arranged on the workbench, the lifting control rod is connected to the movable support, and the cutting mechanism is arranged on the movable support; and the lifting control rod is used for driving the movable support to move, so that the cutting mechanism cuts and punches the kiln roller rod on the roller rod fixing tool. In the application, the roller rod fixing tool on the workbench can fix the kiln roller rod, the lifting control rod can control the lifting of the movable support, the cutting mechanism can cut and punch the kiln roller rod, the kiln roller rod can be recycled, the utilization rate of the kiln roller rod is effectively improved, the production cost is reduced, and the device is simple and practical.

Description

Technical Field

[0001] This application relates to the field of ceramic production technology, and more specifically, to a kiln roller recycling and processing device. Background Technology

[0002] Roller kilns are commonly used in the firing process of architectural ceramics. The production process requires a large number of rollers, mostly made of alumina and silicon carbide and featuring pin-fixed design. These rollers have holes at both ends to facilitate mounting to the kiln's support structure using pins and other components. Typically, the rollers are reinstalled when the kiln is started. During production, rollers that are broken or have developed nails on their surface need to be replaced. After the kiln is shut down, the rollers need to be disassembled and inspected. These processes involve repeated insertion and removal of the rollers, inevitably causing varying degrees of impact damage to both ends.

[0003] Generally, for minor damage, the damaged rollers can be moved to areas that have less impact on the brick blanks by adjusting their position. However, some damage is more severe, such as damage to the pin holes, which prevents the rollers from being properly fixed to the kiln support. Such rollers cannot be used and must be discarded, resulting in waste. Therefore, it is necessary to design a simple roller recycling and processing device to reduce the production costs of enterprises.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] The purpose of this application is to provide a kiln roller recycling and processing device, which aims to solve the technical problem of how to provide a simple roller recycling and processing device in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] This application provides a kiln roller recycling and processing device, comprising:

[0008] Workbench;

[0009] A roller fixing fixture is provided on the worktable and is used to fix the kiln rollers.

[0010] A movable support, which is movably mounted on the worktable;

[0011] A lifting control lever, which is connected to the movable bracket;

[0012] A cutting mechanism is provided on the movable support. The lifting control lever is used to drive the movable support to move, so that the cutting mechanism can cut and punch holes in the kiln rollers on the roller fixing fixture.

[0013] In one embodiment, the roller fixing fixture includes:

[0014] A roller support frame is provided on the worktable, and the roller support frame has a V-shaped groove for placing the kiln roller.

[0015] A bolt fixing part is provided on the roller support frame and is used to fix the kiln roller.

[0016] In one embodiment, the roller support frame includes:

[0017] V-groove profile, wherein the V-groove profile has the V-shaped groove;

[0018] A first side plate is disposed on the left side of the V-groove profile, and the left side of the V-groove profile is connected to the workbench via the first side plate;

[0019] The second side plate is disposed on the right side of the V-groove profile, and the right side of the V-groove profile is connected to the workbench via the first side plate.

[0020] In one embodiment, the bolt fixing part includes:

[0021] A bolt fixing plate is fixed to the side of the V-groove profile near the cutting mechanism;

[0022] A bolted connector, wherein the bolted connector is disposed on the bolt fixing plate, and the bolted connector is provided with internal threads;

[0023] An adjusting screw is provided with an external thread, and the adjusting screw is threadedly connected to the internal thread on the bolt connector through the external thread;

[0024] A plunger is connected to the side of the adjusting screw away from the bolt connection member. The plunger is used to be embedded in the kiln roller to fix the kiln roller to the bolt fixing plate.

[0025] In one embodiment, the movable support includes:

[0026] A motor platform, which is used to mount the cutting mechanism;

[0027] A platform support frame is provided on both sides of the motor platform;

[0028] A rotating shaft is disposed on the platform support frame;

[0029] A rotating base is fixed to the worktable and is rotatably connected to the rotating shaft.

[0030] In one embodiment, the lifting control lever includes:

[0031] A first connecting rod, the first connecting rod being provided with a first connecting part and a second connecting part, the first connecting part being used to hinge with the worktable, and the second connecting part being provided on the side of the first connecting rod close to the first connecting part;

[0032] The second link is provided with a third connecting part and a fourth connecting part. The second link is rotatably connected to the second connecting part through the third connecting part, and the fourth connecting part is used to be fixedly connected to the movable bracket.

[0033] A control handle is located at the end of the first link away from the first connecting part.

[0034] In one embodiment, the first connecting part is provided with a first screw and a first nut. The first screw passes through the worktable and the first connecting rod and is threadedly connected to the first nut to achieve hinge connection between the first connecting rod and the worktable.

[0035] In one embodiment, the second connecting part is provided with a second screw and a second nut. The second screw passes through the first connecting rod and the second connecting rod and is threadedly connected to the second nut to realize the rotatable connection between the first connecting rod and the second connecting rod.

[0036] In one embodiment, the fourth connecting part is provided with a fourth screw and a fourth nut. The fourth screw passes through the movable bracket and the second connecting rod and is threadedly connected to the fourth nut to achieve a fixed connection between the second connecting rod and the movable bracket.

[0037] In one embodiment, the control handle includes:

[0038] A third connecting rod is disposed on the side of the first connecting rod away from the second connecting rod;

[0039] A handle is provided on the side of the third connecting rod away from the second connecting rod, and the handle, the third connecting rod and the first connecting rod are connected to form a stepped structure.

[0040] The beneficial effects of the kiln roller recycling and processing device provided in this application are at least as follows:

[0041] This application discloses a kiln roller recycling and processing device, comprising a worktable, a roller fixing fixture, a movable support, a lifting control lever, and a cutting mechanism. The roller fixing fixture is disposed on the worktable and is used to fix the kiln rollers. The movable support is movably disposed on the worktable, and the lifting control lever is connected to the movable support. The cutting mechanism is disposed on the movable support, and the lifting control lever is used to drive the movable support to move, so that the cutting mechanism can cut and drill holes in the kiln rollers on the roller fixing fixture. In this application, the roller fixing fixture on the worktable can fix the kiln rollers, and the lifting control lever can control the raising and lowering of the movable support, enabling the cutting mechanism to cut and drill holes in the kiln rollers for recycling. This effectively improves the utilization rate of kiln rollers, reduces production costs, and is simple and practical. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of the kiln roller recycling and processing device provided in the embodiments of this application;

[0044] Figure 2 A schematic diagram of a specific embodiment of the kiln roller recycling and processing device provided in this application.

[0045] Figure 3 This is a partial enlarged view of the roller fixing fixture provided in the embodiments of this application;

[0046] Figure 4 This is a partial enlarged view of the lifting control lever provided in an embodiment of this application.

[0047] The following are the labeling elements in the figure:

[0048] 100. Workbench; 200. Roller fixing fixture; 300. Movable support; 400. Lifting control lever; 500. Cutting mechanism; 600. Kiln roller; 210. Roller support frame; 220. Bolt fixing part; 211. V-groove profile; 212. First side plate; 213. Second side plate; 221. Bolt fixing plate; 222. Bolt connector; 223. Adjusting screw; 224. Plunger; 310. Motor platform; 320. Platform support frame; 330 340. Rotating shaft; 410. Rotating base; 420. First connecting rod; 430. Second connecting rod; 431. Control handle; 432. Third connecting rod; 440. First connecting part; 450. Second connecting part; 460. Third connecting part; 470. Fourth connecting part; 441. First screw; 442. First nut; 451. Second screw; 452. Second nut; 471. Fourth screw; 472. Fourth nut; 431. Third connecting rod; 432. Handle. Detailed Implementation

[0049] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0050] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.

[0051] Please see Figure 1This embodiment provides a kiln roller recycling and processing device, which includes: a worktable 100, a roller fixing fixture 200, a movable support 300, a lifting control lever 400, and a cutting mechanism 500. The roller fixing fixture 200 is disposed on the worktable 100 and is used to fix the kiln roller 600. The movable support 300 is movably disposed on the worktable 100. The lifting control lever 400 is connected to the movable support 300. The cutting mechanism 500 is disposed on the movable support 300. The lifting control lever 400 is used to drive the movable support 300 to move, so that the cutting mechanism 500 cuts and punches holes in the kiln roller 600 on the roller fixing fixture 200.

[0052] In this embodiment, the roller fixing fixture 200 can fix the kiln roller 600 to restrict its movement. The kiln roller 600 can be fixed on the worktable 100 by the roller fixing fixture 200, and then the kiln roller 600 can be cut by a manual cutting machine to remove the deformed or damaged parts of the kiln roller 600, so that the kiln roller 600 can be recycled and reused after cutting.

[0053] The movable support 300 is movably connected to the worktable 100. The lifting control lever 400 can control the lifting and lowering of the movable support 300, allowing it to swing along the worktable 100. For example, after cutting a deformed or damaged part of the kiln roller 600, the kiln roller recycling processing device can be used to fix the kiln roller 600 on the roller fixing fixture 200. Then, the cutting mechanism 500 is started, and the lifting control lever 400 is operated to lower the movable support 300, allowing the cutting mechanism 500 to cut and drill holes in the kiln roller 600. After cutting, the lifting control lever 400 can be operated to raise the movable support 300, allowing the kiln roller 600 to be removed. The drilled kiln roller 600 can be fitted with a transmission bushing (or chuck), i.e., a tail or drive end can be installed on the kiln roller 600, allowing the kiln roller 600 to be recycled and reused after processing.

[0054] The recycling of kiln rollers 600 in this embodiment is based on the different spans of the kilns. Some kilns have large spans, while others have small spans. Kilns with large spans use longer kiln rollers 600, while kilns with small spans use shorter kiln rollers 600. When the kiln rollers 600 in a kiln with a large span collide or are damaged, some of the longer kiln rollers 600 can be cut or punched to process them into shorter kiln rollers 600, thereby achieving the recycling of some of the kiln rollers 600.

[0055] Therefore, in this embodiment, the workbench 100 has a roller fixing fixture 200, which can fix the kiln roller 600. The lifting control lever 400 can control the lifting of the movable support 300, so that the cutting mechanism 500 can cut and punch holes in the kiln roller 600 for recycling. This effectively improves the utilization rate of the kiln roller 600, reduces production costs, and is simple and practical.

[0056] Specifically, please refer to Figure 2 The roller fixing fixture 200 includes a roller support frame 210 and a bolt fixing part 220. The roller support frame 210 is set on the worktable 100 and has a V-shaped groove for placing the kiln roller 600. The bolt fixing part 220 is set on the roller support frame 210 and is used to fix the kiln roller 600.

[0057] In this embodiment, the bolt fixing part 220 is disposed on the workbench 100, and the roller support frame 210 is provided with a V-shaped groove. The V-shaped groove extends along the axial direction of the kiln roller 600, and the kiln roller 600 can be placed in the V-shaped groove, that is, the kiln roller 600 can be locked in the V-shaped groove. The bolt fixing part 220 is disposed at the end of the roller support frame 210. The bolt fixing part 220 can be disposed on the side of the roller support frame 210 near the cutting mechanism 500. For example, the kiln roller 600 is placed in the V-shaped groove, and the kiln roller 600 is fixedly connected to the bolt fixing part 220 to fix the kiln roller 600 in the V-shaped groove. Then, the cutting mechanism 500 is controlled to cut and drill holes in the kiln roller 600. The operation is simple and the installation is efficient.

[0058] Specifically, please refer to Figure 2 The roller support frame 210 includes: a V-groove profile 211, a first side plate 212, and a second side plate 213. The V-groove profile 211 has a V-shaped groove. The first side plate 212 is disposed on the left side of the V-groove profile 211. The left side of the V-groove profile 211 is connected to the worktable 100 via the first side plate 212. The second side plate 213 is disposed on the right side of the V-groove profile 211. The right side of the V-groove profile 211 is connected to the worktable 100 via the first side plate 212.

[0059] In this embodiment, the roller support frame 210 is composed of a V-groove profile 211, a first side plate 212, and a second side plate 213. The left side of the V-groove profile 211 is connected to the worktable 100 through the first side plate 212, and the right side of the V-groove profile 211 is connected to the worktable 100 through the second side plate 213. The V-groove profile 211 can be made of angle steel, which is easy to manufacture. The kiln roller 600 is placed in the V-groove profile 211, and the kiln roller 600 is locked in place by the V-groove, achieving automatic stabilization and structural stability.

[0060] Specifically, please refer to Figure 3 The bolt fixing part 220 includes: a bolt fixing plate 221, a bolt connector 222, an adjusting screw 223, and a plunger 224. The bolt fixing plate 221 is fixed to the side of the V-groove profile 211 near the cutting mechanism 500. The bolt connector 222 is disposed on the bolt fixing plate 221. The bolt connector 222 is provided with an internal thread. The adjusting screw 223 is provided with an external thread. The adjusting screw 223 is threadedly connected to the internal thread on the bolt connector 222 through the external thread. The plunger 224 is connected to the side of the adjusting screw 223 away from the bolt connector 222. The plunger 224 is used to be embedded in the kiln roller 600 to fix the kiln roller 600 on the bolt fixing plate 221.

[0061] In this embodiment, the bolt fixing plate 221 can be fixed to the V-groove profile 211 or to the worktable 100. The bolt fixing plate 221 is provided with a bolt connector 222. An adjusting screw 223 passes through the bolt fixing plate 221 and is threadedly connected to the bolt connector 222. The adjusting screw 223 is threadedly connected to a plunger 224, which can be embedded within the kiln roller 600 to restrict and fix the kiln roller 600. For example, the plunger 224 is first embedded into the kiln roller 600, so that the plunger 224 is locked within the kiln roller 600. Then, the kiln roller 600 is placed in the V-groove profile 211, and then the adjusting screw 223 is threadedly connected to the plunger 224, thus fixing the kiln roller 600 within the V-groove profile 211 and preventing shaking during the cutting of the kiln roller 600.

[0062] Specifically, please refer to Figure 2 The movable support 300 includes: a motor platform 310, a platform support frame 320, a rotating shaft 330, and a rotating base 340. The motor platform 310 is used to install the cutting mechanism 500. The platform support frame 320 is located on both sides of the motor platform 310. The rotating shaft 330 is located on the platform support frame 320. The rotating base 340 is fixed to the worktable 100 and is rotatably connected to the rotating shaft 330.

[0063] In this embodiment, the rotating base 340 is mounted on the worktable 100, and the rotating shaft 330 is rotatably connected to the rotating base 340. The motor platform 310 is connected to the rotating shaft 330 via a platform support frame 320 to achieve a rotatable connection between the motor platform 310 and the worktable 100. A cutting mechanism 500 is mounted on the motor platform 310. For example, the lifting control lever 400 can be swung to cause the motor platform 310 to swing along the rotating base 340, thereby causing the cutting mechanism 500 to swing up and down. When the cutting mechanism 500 swings downwards, it can cut and drill holes in the kiln roller 600. After cutting, the lifting control lever 400 can be swung to cause the motor platform 310 to drive the cutting mechanism 500 upwards, after which the kiln roller 600 can be removed.

[0064] Specifically, please refer to Figure 2 The lifting control lever 400 includes: a first link 410, a second link 420, and a control handle 430. The first link 410 is provided with a first connecting part 440 and a second connecting part 450. The first connecting part 440 is used to hinge with the worktable 100. The second connecting part 450 is provided on the side of the first link 410 close to the first connecting part 440. The second link 420 is provided with a third connecting part 460 and a fourth connecting part 470. The second link 420 is rotatably connected to the second connecting part 450 through the third connecting part 460. The fourth connecting part 470 is used to fixally connect with the movable bracket 300. The control handle 430 is provided at the end of the first link 410 away from the first connecting part 440.

[0065] In this embodiment, the first connecting rod 410 is hinged to the worktable 100 via the first connecting part 440. The control handle 430 is located at the end of the first connecting rod 410 away from the first connecting part 440. By swinging the control handle 430, the first connecting rod 410 can swing around the first connecting part 440. The second connecting part 450 is located on the side of the first connecting rod 410 close to the first connecting part 440. The control handle 430 is located at the end of the first connecting rod 410 away from the first connecting part 440. In this way, the principle of leverage can be used to easily control the cutting mechanism 500 to cut and punch holes. The operation is simple and the practicality is strong.

[0066] Specifically, please refer to Figure 4 The first connecting part 440 is provided with a first screw 441 and a first nut 442. The first screw 441 passes through the worktable 100 and the first connecting rod 410 and is threadedly connected to the first nut 442 to realize the hinge connection between the first connecting rod 410 and the worktable 100.

[0067] In this embodiment, the first connecting rod 410 can be hinged to the worktable 100 by the first screw 441 and the first nut 442, which is convenient to disassemble and assemble, easy to maintain, and has a simple structure.

[0068] Specifically, please refer to Figure 4 The second connecting part 450 is provided with a second screw 451 and a second nut 452. The second screw 451 passes through the first connecting rod 410 and the second connecting rod 420 and is threadedly connected to the second nut 452 to realize the rotatable connection between the first connecting rod 410 and the second connecting rod 420.

[0069] In this embodiment, the first connecting rod 410 can be rotatably connected to the second connecting rod 420 by the second screw 451 and the second nut 452, which is convenient for disassembly and assembly, easy for maintenance, and has a simple structure.

[0070] Specifically, please refer to Figure 2 The fourth connecting part 470 is provided with a fourth screw 471 and a fourth nut 472. The fourth screw 471 passes through the movable bracket 300 and the second connecting rod 420 and is threadedly connected to the fourth nut 472 to realize the fixed connection between the second connecting rod 420 and the movable bracket 300.

[0071] In this embodiment, the second connecting rod 420 can be fixedly connected to the movable bracket 300 by the fourth screw 471 and the fourth nut 472, which is convenient to disassemble and assemble, easy to maintain, and has a simple structure.

[0072] Specifically, please refer to Figure 2 The control handle 430 includes a third connecting rod 431 and a grip 432. The third connecting rod 431 is located on the side of the first connecting rod 410 away from the second connecting rod 420, and the grip 432 is located on the side of the third connecting rod 431 away from the second connecting rod 420. The grip 432, the third connecting rod 431 and the first connecting rod 410 are connected to form a stepped structure.

[0073] In this embodiment, the first connecting rod 410 is located at the bottom of the worktable 100 and is hinged to the worktable 100. The first connecting rod 410 is located at the bottom of the worktable 100 and extends from the bottom of the worktable 100 to the front side of the worktable 100. In this way, the first connecting rod 410 can avoid the roller fixing fixture 200 and the kiln roller 600. The control handle 430 on the first connecting rod 410 can provide operating force to control the lifting and lowering of the cutting mechanism 500. The third connecting rod 431 and the handle 432 utilize the lever principle to save effort and accurately control the lifting and lowering of the cutting mechanism 500.

[0074] The cutting mechanism 500 and the worktable 100 can be understood as existing technology, and the specific structure of the cutting mechanism 500 and the worktable 100 will not be described in detail.

[0075] In summary, this application discloses a kiln roller recycling and processing device, comprising a worktable, a roller fixing fixture, a movable support, a lifting control lever, and a cutting mechanism. The roller fixing fixture is disposed on the worktable and is used to fix the kiln rollers. The movable support is movably disposed on the worktable, and the lifting control lever is connected to the movable support. The cutting mechanism is disposed on the movable support, and the lifting control lever is used to drive the movable support to move, so that the cutting mechanism can cut and drill holes in the kiln rollers on the roller fixing fixture. In this application, the roller fixing fixture on the worktable can fix the kiln rollers, and the lifting control lever can control the raising and lowering of the movable support, so that the cutting mechanism can cut and drill holes in the kiln rollers for recycling, effectively improving the utilization rate of kiln rollers, reducing production costs, and is simple and practical.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A kiln roller recycling and processing device, characterized in that, include: Workbench; A roller fixing fixture is provided on the worktable and is used to fix the kiln rollers. A movable support, which is movably mounted on the worktable; A lifting control lever, which is connected to the movable bracket; A cutting mechanism is provided on the movable support. The lifting control lever is used to drive the movable support to move, so that the cutting mechanism can cut and punch holes in the kiln rollers on the roller fixing fixture.

2. The kiln roller recycling and processing device as described in claim 1, characterized in that, The roller fixing fixture includes: A roller support frame is provided on the worktable, and the roller support frame has a V-shaped groove for placing the kiln roller. A bolt fixing part is provided on the roller support frame and is used to fix the kiln roller.

3. The kiln roller recycling and processing device as described in claim 2, characterized in that, The roller support frame includes: V-groove profile, wherein the V-groove profile has the V-shaped groove; A first side plate is disposed on the left side of the V-groove profile, and the left side of the V-groove profile is connected to the workbench via the first side plate; The second side plate is disposed on the right side of the V-groove profile, and the right side of the V-groove profile is connected to the workbench via the first side plate.

4. The kiln roller recycling and processing device as described in claim 3, characterized in that, The bolt fixing part includes: A bolt fixing plate is fixed to the side of the V-groove profile near the cutting mechanism; A bolted connector, wherein the bolted connector is disposed on the bolt fixing plate, and the bolted connector is provided with internal threads; An adjusting screw is provided with an external thread, and the adjusting screw is threadedly connected to the internal thread on the bolt connector through the external thread; A plunger is connected to the side of the adjusting screw away from the bolt connection member. The plunger is used to be embedded in the kiln roller to fix the kiln roller to the bolt fixing plate.

5. The kiln roller recycling and processing device as described in claim 1, characterized in that, The movable support includes: A motor platform, which is used to mount the cutting mechanism; A platform support frame is provided on both sides of the motor platform; A rotating shaft is disposed on the platform support frame; A rotating base is fixed to the worktable and is rotatably connected to the rotating shaft.

6. The kiln roller recycling and processing device as described in claim 1, characterized in that, The lifting control lever includes: A first connecting rod, the first connecting rod being provided with a first connecting part and a second connecting part, the first connecting part being used to hinge with the worktable, and the second connecting part being provided on the side of the first connecting rod close to the first connecting part; The second link is provided with a third connecting part and a fourth connecting part. The second link is rotatably connected to the second connecting part through the third connecting part, and the fourth connecting part is used to be fixedly connected to the movable bracket. A control handle is located at the end of the first link away from the first connecting part.

7. The kiln roller recycling and processing device as described in claim 6, characterized in that, The first connecting part is provided with a first screw and a first nut. The first screw passes through the worktable and the first connecting rod and is threadedly connected to the first nut to realize the hinge connection between the first connecting rod and the worktable.

8. The kiln roller recycling and processing device as described in claim 6, characterized in that, The second connecting part is provided with a second screw and a second nut. The second screw passes through the first connecting rod and the second connecting rod and is threadedly connected to the second nut to realize the rotatable connection between the first connecting rod and the second connecting rod.

9. The kiln roller recycling and processing device as described in claim 6, characterized in that, The fourth connecting part is provided with a fourth screw and a fourth nut. The fourth screw passes through the movable bracket and the second connecting rod and is threadedly connected to the fourth nut to achieve a fixed connection between the second connecting rod and the movable bracket.

10. The kiln roller recycling and processing device as described in claim 6, characterized in that, The control handle includes: A third connecting rod is disposed on the side of the first connecting rod away from the second connecting rod; A handle is provided on the side of the third connecting rod away from the second connecting rod, and the handle, the third connecting rod and the first connecting rod are connected to form a stepped structure.

Images