Engineering machinery chain protection frame convenient to install

Abstract

The utility model provides an engineering machinery chain protection frame convenient to install, and relates to the technical field of chain protection frames, the engineering machinery chain protection frame convenient to install comprises two base bodies, each base body is provided with an anti-loosening mechanism and a limiting assembly, and each anti-loosening mechanism comprises a wear-resisting part arranged on the side, close to each other, of the corresponding base body and a fixing plate fixed to the side, away from each other, of the corresponding base body. Threaded holes are formed in the wear-resistant part and the base body. According to the engineering machinery chain protection frame convenient to install, through matched arrangement of a threaded hole, a threaded rod and a rotating block, a wear-resisting part can be installed on the base body, the problem that when the device is seriously abraded and needs to be replaced, overall replacement, disassembly and assembly are difficult is solved, the rotating block and the threaded rod can be limited through meshing of a limiting rack and a limiting gear, and the service life of the device is prolonged. And the problem that the threaded rod is gradually loosened due to the influence of vibration, so that the connection between the wear-resistant part and the base body is not tight, and the wear-resistant part deviates or falls off is solved.

Description

Technical Field

[0001] The utility model relates to a chain guard frame, in particular to an engineering machinery chain guard frame which is easy to install and belongs to the technical field of chain guard frames. Background Art

[0002] The chain guard is a very important structure in the transmission system of crawler walking machinery. It plays a role of longitudinal guidance and axial restraint during the walking process, preventing the chain track or crawler track from running off the track and achieving the function of smooth operation through restraint. Commonly used machines include rotary drilling rigs, excavators, crawler cranes, pavers, etc.

[0003] A chain guard disclosed in Chinese patent application publication specification CN210680971U has a wear-resistant part and a base connected and fixed by bolts and gaskets, adopts a combined structural design, is easy to disassemble and assemble, and is more flexible. Installing the wear-resistant part on the base can greatly reduce the operating and maintenance costs. When the wear is severe, only the wear-resistant part needs to be replaced, and the base and other structures do not need to be replaced, thus avoiding waste of resources and improving maintenance efficiency.

[0004] Although the wear-resistant parts can be installed on the base by bolts in the solution of the above patent, when the device is installed on equipment such as excavators and crawler cranes, the working environment in which it is located is generally harsh, and continuous vibration will be generated during its driving process. The vibration may cause the bolts to gradually loosen, making the connection between the wear-resistant parts and the chain guard base no longer tight. This loosening will cause the wear-resistant parts to deviate or fall off. Utility Model Content

[0005] The utility model provides an engineering machinery chain guard frame which is easy to install and can prevent the wear-resistant parts from deflecting or falling off due to loose bolts.

[0006] The utility model is realized through the following technical scheme: an engineering machinery chain guard frame which is easy to install comprises two base bodies, and an anti-loosening mechanism and a limiting component are arranged on the base bodies.

[0007] The anti-loosening mechanism includes a wear-resistant part arranged on the side where the two bases are close to each other and a fixed plate fixed on the side where the two bases are away from each other. Threaded holes are provided on the wear-resistant part and the base, and a threaded rod is connected to the inner wall of the threaded hole. A rotating block is fixed at one end of the threaded rod close to the base, and a limiting gear is fixed on the outer surface of the rotating block.

[0008] A first sliding rod is slidably connected to the inner wall of the hole of the fixed plate, a limiting rack is fixed to one end of the first sliding rod close to the rotating block, and the limiting rack is meshed with the limiting gear, a first spring is sleeved on the outer surface of the first sliding rod, and a pulling plate is fixed to one end of the first sliding rod away from the limiting rack.

[0009] Further, the limiting component includes two fixing blocks fixed on one side of the base close to the fixing plate. A second sliding rod is slidably connected to the inner wall of the hole of the fixing block. A clamping block is fixed to one end of the second sliding rod close to the pulling plate, a limiting block is fixed to the other end of the second sliding rod away from the clamping block, and a second spring is sleeved on the outer surface of the second sliding rod.

[0010] Further, the distance between the two clamping blocks is less than the length of the pulling plate. The sides of the pulling plate and the clamping block close to each other are both provided with inclined surfaces. A disassembly and assembly hole is opened on one side of the rotating block close to the limiting gear.

[0011] Further, a first rib plate is arranged below the wear-resistant part, and both sides of the first rib plate are respectively fixed to the sides of the two bases close to each other. A second rib plate is fixed to the side of the base away from the first rib plate.

[0012] Further, a hollow groove is opened in the middle of the base, and a mounting hole is opened on the bottom surface of the base.

[0013] Further, the wear-resistant part is in the shape of a long strip, and the length of the wear-resistant part is not less than the width of the base, which can protect the base from wear.

[0014] The utility model provides a construction machinery chain guard which is convenient to install, and the beneficial effects thereof are as follows:

[0015] 1. For the construction machinery chain guard which is convenient to install, through the cooperation of the threaded hole, the threaded rod and the rotating block, the wear-resistant part can be installed on the base, avoiding the problem that when the device is severely worn and needs to be replaced, it is difficult to disassemble and assemble as a whole.

[0016] 2. For the construction machinery chain guard which is convenient to install, through the engagement of the limiting rack and the limiting gear, the rotating block and the threaded rod can be limited, avoiding the problem that the threaded rod gradually loosens due to the influence of vibration, resulting in the connection between the wear-resistant part and the base not being tight, and causing the offset or detachment of the wear-resistant part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 is a partial structural diagram of the utility model;

[0019] Figure 3 is the Figure 2 magnified schematic diagram of the structure at A in the utility model;

[0020] Figure 4 is the Figure 2 magnified schematic diagram of the structure at B in the utility model.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS

[0022] 1. Substrate

[0023] 2. Anti-loosening mechanism; 201 Wear-resistant part; 202 Threaded hole; 203 Threaded rod; 204 Rotating block; 205 Limiting gear; 206 Fixed plate; 207 First sliding rod; 208 Limiting rack; 209 First spring; 210 Pulling plate

[0024] 3. Limiting component; 301 Fixed block; 302 Second sliding rod; 303 Clamping block; 304 Limiting block; 305 Second spring

[0025] 4. First rib plate; 5. Second rib plate; 6. Hollow groove; 7. Mounting hole; 8. Disassembly and assembly hole Detailed implementation manner

[0026] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , an embodiment of the present utility model provides a construction machinery chain guard that is convenient for installation, including two substrates 1. An anti-loosening mechanism 2 and a limiting component 3 are provided on the substrate 1. A first rib plate 4 is provided on the substrate 1, and both sides of the first rib plate 4 are fixed to the side of the two substrates 1 close to each other. A second rib plate 5 is fixed to the side of the substrate 1 away from the first rib plate 4. A hollow groove 6 is opened in the middle of the substrate 1, and a mounting hole 7 is opened on the bottom surface of the substrate 1

[0027] Please pay special attention to Figure 3 , the anti-loosening mechanism 2 includes a wear-resistant part 201 provided on the side of the two substrates 1 close to each other and a fixed plate 206 fixed to the side of the two substrates 1 away from each other. Threaded holes 202 are opened on both the wear-resistant part 201 and the substrate 1. The inner wall of the threaded hole 202 is connected with a threaded rod 203. One end of the threaded rod 203 close to the substrate 1 is fixed with a rotating block 204, and a limiting gear 205 is fixed on the outer surface of the rotating block 204

[0028] The wear-resistant part 201 is in the shape of a long strip, and the length of the wear-resistant part 201 is not less than the width of the substrate 1, which can protect the substrate 1 from wear. An assembly and disassembly hole 8 is opened on the side of the rotating block 204 close to the limiting gear 205

[0029] The inner wall of the hole of the fixed plate 206 is slidably connected with a first sliding rod 207. One end of the first sliding rod 207 close to the rotating block 204 is fixed with a limiting rack 208, and the limiting rack 208 meshes with the limiting gear 205. A first spring 209 is sleeved on the outer surface of the first sliding rod 207, and a pulling plate 210 is fixed to the end of the first sliding rod 207 away from the limiting rack 208

[0030] When it is necessary to install the wear-resistant part 201, pull the pull plate 210. The pull plate 210 will drive the limit rack 208 to move through the first slide bar 207. At the same time, the movement of the limit rack 208 will squeeze the first spring 209 to generate elastic force. Then, through the cooperation of the threaded hole 202, the limit gear 205, the threaded rod 203 and the rotating block 204, the wear-resistant part 201 is installed on the base body 1, avoiding the problem of difficult disassembly and assembly when the whole device needs to be replaced due to serious wear. After that, release the pull plate 210. The elastic force of the first spring 209 can push the limit rack 208 to engage with the limit gear 205, so as to limit the rotating block 204 and the threaded rod 203, avoiding the problem of the offset or falling off of the wear-resistant part 201 caused by the gradual loosening of the threaded rod 203 due to the influence of vibration.

[0031] Please refer specifically to Figure 3 and Figure 4 The limit component 3 includes two fixed blocks 301 fixed on one side of the base body 1 close to the fixed plate 206. The inner wall of the hole of the fixed block 301 is slidably connected with a second slide bar 302. One end of the second slide bar 302 close to the pull plate 210 is fixed with a clamping block 303. One end of the second slide bar 302 far from the clamping block 303 is fixed with a limit block 304. The outer surface of the second slide bar 302 is sleeved with a second spring 305.

[0032] The distance between the two clamping blocks 303 is less than the length of the pull plate 210. The mutually approaching sides of the pull plate 210 and the clamping block 303 are both beveled.

[0033] When pulling the pull plate 210, the bevel surface of the pull plate 210 will squeeze the bevel surface of the clamping block 303, thereby pushing the clamping block 303 to move. The movement of the clamping block 303 will squeeze the second spring 305 to generate elastic force. When the pull plate 210 moves to one side of the clamping block 303, the elastic force of the second spring 305 can clamp the clamping block 303 to one side of the pull plate 210, so as to limit the pull plate 210 and the limit rack 208, improving the convenience of disassembling and assembling the wear-resistant part 201.

[0034] Working principle: When in use, first pull the pull plate 210. When pulling the pull plate 210, the inclined surface of the pull plate 210 will squeeze the inclined surface of the clamping block 303, thereby pushing the clamping block 303 to move. The movement of the clamping block 303 will squeeze the second spring 305 to generate elastic force. When the pull plate 210 moves to one side of the clamping block 303, the elastic force of the second spring 305 can be used to clamp the clamping block 303 to one side of the pull plate 210, thereby limiting the pull plate 210 and the limit rack 208, improving the convenience of disassembling and assembling the wear-resistant part 201. Then, through the cooperative setting of the threaded hole 202, the limit gear 205, the threaded rod 203 and the rotating block 204, the wear-resistant part 201 is installed on the base body 1, avoiding the problem of difficult disassembly and assembly during overall replacement when the device is severely worn and needs to be replaced. At the same time, the movement of the limit rack 208 will squeeze the first spring 209 to generate elastic force. After that, release the pull plate 210, and the elastic force of the first spring 209 can be used to push the limit rack 208 to engage with the limit gear 205, thereby limiting the rotating block 204 and the threaded rod 203, avoiding the problem of offset or detachment of the wear-resistant part 201 caused by the gradual loosening of the threaded rod 203 due to the influence of vibration.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An engineering machinery chain guard frame that is easy to install, comprising two base bodies (1), characterized in that: The base (1) is provided with an anti-loosening mechanism (2) and a limiting component (3); The anti-loosening mechanism (2) comprises a wear-resistant part (201) arranged on the side of the two substrates (1) close to each other and a fixing plate (206) fixed on the side of the two substrates (1) away from each other, the wear-resistant part (201) and the substrate (1) are both provided with threaded holes (202), the inner wall of the threaded hole (202) is connected to a threaded rod (203), a rotating block (204) is fixed to one end of the threaded rod (203) close to the substrate (1), and a limit gear (205) is fixed to the outer surface of the rotating block (204); A first sliding rod (207) is slidably connected to the inner wall of the hole of the fixed plate (206); a limit rack (208) is fixed to one end of the first sliding rod (207) close to the rotating block (204), and the limit rack (208) is meshed with the limit gear (205); a first spring (209) is sleeved on the outer surface of the first sliding rod (207); a pull plate (210) is fixed to one end of the first sliding rod (207) away from the limit rack (208).

2. The easy-to-install chain guard for construction machinery according to claim 1, characterized in that: The limit assembly (3) comprises two fixed blocks (301) fixed to a side of the base (1) close to the fixed plate (206); the inner wall of the hole of the fixed block (301) is slidably connected to a second sliding rod (302); a clamping block (303) is fixed to one end of the second sliding rod (302) close to the pull plate (210); a limit block (304) is fixed to one end of the second sliding rod (302) away from the clamping block (303); and a second spring (305) is sleeved on the outer surface of the second sliding rod (302).

3. The easy-to-install chain guard for construction machinery according to claim 2, characterized in that: The distance between the two clamping blocks (303) is smaller than the length of the pull plate (210), and a disassembly hole (8) is provided on a side of the rotating block (204) close to the limiting gear (205).

4. The easy-to-install chain guard for construction machinery according to claim 1, characterized in that: A first rib plate (4) is arranged below the wear-resistant part (201), and two sides of the first rib plate (4) are respectively fixed to the sides of the two base bodies (1) that are close to each other, and a second rib plate (5) is fixed to the side of the base body (1) that is away from the first rib plate (4).

5. The easy-to-install chain guard for construction machinery according to claim 1, characterized in that: A hollow groove (6) is provided in the middle of the base (1), and a mounting hole (7) is provided on the bottom surface of the base (1).

6. The easy-to-install chain guard for construction machinery according to claim 1, characterized in that: The wear-resistant part (201) is in the shape of a long strip, and the length of the wear-resistant part (201) is not less than the width of the base (1).

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