Auxiliary mounting mechanism for chain wheel

Abstract

The utility model discloses an auxiliary installation mechanism of a chain wheel, and belongs to the technical field of chain wheel installation. Comprising a bottom plate, a moving mechanism is arranged below the bottom plate, fixing mechanisms are arranged on the two sides of the bottom plate, supporting plates with the height controlled through air cylinders are arranged on the two sides of the middle of the bottom plate, a moving rod is arranged in the middle of each supporting plate, and a clamping mechanism capable of automatically centering is arranged at one end of each moving rod. A centering rod which is coaxial with the moving rod is arranged in the moving rod, one end of the centering rod exceeds the moving rod, and the other end of the centering rod can penetrate through the clamping mechanism; the clamping mechanism is controlled by a detachable control rod; the device can move and be fixed to the outer side of the installation position of the chain wheel through the moving mechanism and the fixing mechanism, the centering rod and the supporting plate with the height controlled through an air cylinder enable the centering rod and the transmission shaft to be coaxial, and after the clamping mechanism clamps the chain wheel, the chain wheel and the transmission shaft can be coaxial through the moving rod and the clamping mechanism capable of achieving automatic centering. The moving rod is pushed so that the clamping mechanism can sleeve the transmission shaft with the chain wheel after clamping the chain wheel.

Description

Technical Field

[0001] The utility model provides an auxiliary installation mechanism for a sprocket, belonging to the technical field of sprocket installation. Background Art

[0002] A sprocket is a wheel-shaped mechanical part with cog-shaped sprocket teeth. It is mainly used to engage with a chain to transmit and convert rotational motion and torque. It is a key component in a chain drive system and is widely used in various industrial and daily equipment. The design and manufacture of the sprocket must ensure that the pitch of the chain it matches is accurately matched to ensure smooth and efficient transmission performance.

[0003] Currently, sprockets are installed manually by workers. However, the diameter of the inner hole of some sprockets is smaller than the diameter of the drive shaft. Therefore, when installing the sprocket on the drive shaft, the sprocket needs to be heated to expand it and then installed on the drive shaft. The heated sprockets are installed by workers wearing labor protection gloves. However, the heat insulation effect of labor protection gloves is poor. Therefore, when installing, the workers' hands are at risk of being burned. Wearing heat insulation gloves is thick and affects the installation, so workers usually do not choose them. Utility Model Content

[0004] The technical problem to be solved by the utility model is that currently workers are at risk of being scalded when picking up a heated sprocket for installation.

[0005] In order to solve the above-mentioned problem, the utility model proposes a technical solution: an auxiliary installation mechanism of a sprocket, comprising a base plate, a moving mechanism is arranged under the base plate, fixing mechanisms are arranged on both sides, support plates with height controlled by cylinders are arranged on both sides of the middle part of the base plate, a moving rod is arranged in the middle part of the support plate, a clamping mechanism capable of automatic centering is arranged at one end of the moving rod, a centering rod is arranged in the moving rod, the center of the moving rod is coaxial with the moving rod and one end exceeds the moving rod and the other end can pass through the clamping mechanism, and the clamping mechanism is controlled by a detachable control rod.

[0006] As an improvement, the moving mechanism includes two directional wheels respectively arranged at two ends of one side of the bottom plate, and two universal wheels respectively arranged at two ends of the other side of the bottom plate, and the lower ends of the directional wheels and the universal wheels are in the same plane;

[0007] As an improvement, the fixing mechanism includes support plates respectively arranged at both ends of the bottom plate, a threaded rod passing through the support plate is arranged in the middle of the support plate, a rubber pad is arranged at the lower end of the threaded rod, and a through hole perpendicular to the axis of the threaded rod is arranged at the upper part, when the lower end of the rubber pad is lower than the directional wheel, the through hole is located above the support plate;

[0008] As an improvement, the clamping mechanism includes a shell, a coupling rotatably arranged inside the shell, an upper part of one side of the coupling is provided with a rotating input gear located inside the shell, and the other side of the coupling is provided with three claws movable in a slide groove at one end of the shell, a side of the coupling close to the input gear is provided with a face gear matched with the input gear, the input gear is a hollow structure, and a key is provided inside, a side of the coupling close to the three claws is provided with a groove of a plane thread structure, and a side of the three claws close to the coupling is provided with a plurality of bosses matched with the groove of the plane thread structure;

[0009] As an improvement, one end of the three claws away from the coupling protrudes from the housing;

[0010] As an improvement, the control rod includes a main rod, one end of which is provided with three auxiliary rods perpendicularly intersecting the main rod, and the other end is provided with a key groove with the same shape as the key, and a limit platform is provided on the main rod above the key groove.

[0011] Beneficial effects of the utility model:

[0012] By setting up a moving mechanism and a fixing mechanism, the device can be moved and fixed on the outside of the sprocket installation position. By setting up a centering rod and a support plate whose height is controlled by a cylinder, the centering rod and the transmission shaft can be coaxial. By setting up a moving rod and a clamping mechanism that can automatically center the sprocket, the sprocket and the transmission shaft can be coaxial after the clamping mechanism clamps the sprocket. Pushing the moving rod allows the clamping mechanism to put the sprocket on the transmission shaft after clamping the sprocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of an auxiliary installation mechanism of a sprocket.

[0014] Figure 2 The utility model is a schematic diagram of a clamping mechanism of an auxiliary installation mechanism of a sprocket.

[0015] Figure 3 The utility model is a schematic diagram of the internal structure of a shell of an auxiliary installation mechanism of a sprocket.

[0016] Figure 4 The utility model is a schematic diagram of a control rod of an auxiliary installation mechanism of a sprocket.

[0017] 1. Base plate; 2. Moving mechanism; 201. Fixed wheel; 202. Universal wheel; 3. Fixing mechanism; 301. Support plate; 302. Threaded rod; 303. Rubber pad; 304. Through hole; 4. Cylinder; 5. Support plate; 6. Moving rod; 7. Clamping mechanism; 701. Shell; 702. Coupling; 703. Input gear; 704. Slide; 705. Claw; 706. Face gear; 707. Groove; 708. Boss; 709. Key; 8. Centering rod; 9. Control rod; 901. Main rod; 902. Sub-rod; 903. Keyway; 904. Limiting platform. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] according to Figure 1 —4 shows: the utility model provides an auxiliary installation mechanism for a sprocket wheel: it comprises a base plate 1, a moving mechanism 2 is arranged below the base plate 1, and fixing mechanisms 3 are arranged on both sides. Support plates 5 whose heights are controlled by cylinders 4 are arranged on both sides of the middle part of the base plate 1, and a moving rod 6 is arranged in the middle part of the support plate 5. A clamping mechanism 7 capable of automatic centering is arranged at one end of the moving rod 6, and a centering rod 8 coaxial with the moving rod 6 and having one end exceeding the moving rod 6 and the other end capable of passing through the clamping mechanism 7 is arranged in the moving rod 6. The clamping mechanism 7 is controlled by a detachable control rod 9. By arranging the moving mechanism 2 and the fixing mechanism 3, the device can be moved and fixed on the outside of the sprocket wheel installation position. By arranging the centering rod 8 and the support plate 5 whose heights are controlled by cylinders 4, the centering rod 8 and the transmission shaft can be coaxial. By arranging the moving rod 6 and the clamping mechanism 7 capable of automatic centering, the sprocket wheel and the transmission shaft can be coaxial after the clamping mechanism 7 clamps the sprocket wheel. Pushing the moving rod 6 enables the clamping mechanism 7 to sleeve the sprocket wheel on the transmission shaft after clamping the sprocket wheel.

[0020] according to Figure 1 As shown: the moving mechanism 2 includes two directional wheels 201 respectively arranged at both ends of one side of the bottom plate 1, and two universal wheels 202 respectively arranged at both ends of the other side of the bottom plate 1. The lower ends of the directional wheels 201 and the universal wheels 202 are in the same plane. The fixing mechanism 3 includes support plates 301 respectively arranged at both ends of both sides of the bottom plate 1. The middle part of the support plate 301 is provided with a threaded rod 302 passing through the support plate 301. The lower end of the threaded rod 302 is provided with a rubber pad 303, and the upper part is provided with a through hole 304 perpendicular to the axis of the threaded rod 302. When the lower end of the rubber pad 303 is lower than the directional wheel 201, the through hole 304 is above the support plate 301; in this way, the directional wheels 201 and the universal wheels 202 enable the device to move. By inserting a steel bar into the through hole 304, the threaded rod 302 can be rotated, so that the lower end of the rubber pad 303 exceeds the directional wheel 201, so that the position of the device can be fixed;

[0021] according to Figure 2 ,3 4: The clamping mechanism 7 includes a housing 701, a coupling 702 rotatably arranged inside the housing 701, an upper portion of one side of the coupling 702 is located inside the housing 701 and is provided with a rotatable input gear 703, and the other side of the coupling 702 is provided with three claws 705 movable in a slide groove 704 at one end of the housing 701, and a face gear 706 cooperating with the input gear 703 is provided on a side of the coupling 702 close to the input gear 703, and the input gear 703 is a hollow structure and is provided with a key 709 inside, and a groove 707 of a planar thread structure is provided on a side of the coupling 702 close to the three claws 705, and the three claws 705 are provided with a face gear 706 cooperating with the input gear 703 on a side close to the coupling 702. The groove 707 cooperates with several bosses 708, and one end of the three claws 705 away from the coupling 702 protrudes from the shell 701. The control rod 9 includes a main rod 901, and one end of the main rod 901 is provided with three auxiliary rods 902 that intersect the main rod 901 vertically, and the other end is provided with a key groove 903 of the same shape as the key 709. A limit platform 904 is provided on the main rod 901 above the key groove 903. In this way, after the control rod 9 is inserted into the shell 701, the key groove 903 can clamp the key 709, and then rotating the control rod 9 can drive the input gear 703 to rotate, thereby driving the coupling 702 to rotate, and then the claw 705 slides in the slide groove 704, and finally the three claws 705 clamp the sprocket.

[0022] The principle of the utility model is as follows: when in use, first move the device to the outside of the transmission shaft so that the axis of the centering rod 8 is in the same plane as the axis of the transmission shaft, then use a steel bar to insert into the through hole 304 and rotate the threaded rod 302 so that the lower end of the rubber pad 303 exceeds the position of the fixed device of the directional wheel 201, then extend the cylinder shafts of the two cylinders 4 so that the centering rod 8 is coaxial with the transmission shaft, and by pushing the centering rod 8, it is convenient for workers to observe the axis of the centering rod 8 and the transmission shaft. After the observation is completed, push the centering rod 8 back again, then place the sprocket axis to coincide with the middle of the three claws 705, and then insert the control rod 9. The housing 701 is moved and rotated, and the keyway 903 of the control rod 9 will catch the key 709. Then the control rod 9 is rotated, and the control rod 9 drives the input gear 703 to rotate, and the input gear 703 drives the coupling 702 to rotate, so that the claw 705 slides in the slide groove 704, and then the three claws 705 catch the sprocket. Then the inner hole of the sprocket is heated with a baking gun to enlarge the inner hole of the sprocket. When the heating is completed, the moving rod 6 is pushed to make the sprocket sleeve on the transmission shaft, and then the control rod 9 is reversed so that the three claws 705 are no longer fixing the sprocket. Finally, the threaded rod 302 is reversed and the device is moved, and the sprocket is installed.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A sprocket auxiliary installation mechanism; characterized in that: The invention comprises a base plate (1), a moving mechanism (2) is provided below the base plate (1), and fixing mechanisms (3) are provided on both sides; support plates (5) whose heights are controlled by cylinders (4) are provided on both sides of the middle of the base plate (1); a moving rod (6) is provided in the middle of the support plate (5); a clamping mechanism (7) capable of automatic centering is provided at one end of the moving rod (6); a centering rod (8) is provided inside the moving rod (6), the centering rod being coaxial with the moving rod (6) and having one end extending beyond the moving rod (6) and the other end capable of passing through the clamping mechanism (7); and the clamping mechanism (7) is controlled by a detachable control rod (9).

2. The auxiliary installation mechanism of a sprocket according to claim 1, characterized in that: The moving mechanism (2) comprises two directional wheels (201) respectively arranged at two ends of one side of the base plate (1), and two universal wheels (202) respectively arranged at two ends of the other side of the base plate (1), wherein the lower ends of the directional wheels (201) and the universal wheels (202) are located in the same plane.

3. The auxiliary installation mechanism of a sprocket according to claim 2, characterized in that: The fixing mechanism (3) comprises supporting plates (301) respectively arranged at both ends of both sides of the base plate (1); a threaded rod (302) passing through the supporting plate (301) is arranged in the middle of the supporting plate (301); a rubber pad (303) is arranged at the lower end of the threaded rod (302); and a through hole (304) perpendicular to the axis of the threaded rod (302) is arranged at the upper part; when the lower end of the rubber pad (303) is lower than the directional wheel (201), the through hole (304) is located above the supporting plate (301).

4. The auxiliary installation mechanism of a sprocket according to claim 1, characterized in that: The clamping mechanism (7) comprises a housing (701), a coupling (702) rotatably arranged inside the housing (701), an upper portion of one side of the coupling (702) located inside the housing (701) and provided with a rotatable input gear (703), the other side of the coupling (702) is provided with three claws (705) movable in a slide groove (704) at one end of the housing (701), a surface gear (706) cooperating with the input gear (703) is provided on a side of the coupling (702) close to the input gear (703), the input gear (703) is a hollow structure and is provided with a key (709) inside, a side of the coupling (702) close to the three claws (705) is provided with a groove (707) of a planar thread structure, and a side of the three claws (705) close to the coupling (702) is provided with a plurality of bosses (708) cooperating with the groove (707) of the planar thread structure.

5. The auxiliary installation mechanism of a sprocket according to claim 4, characterized in that: One end of the three claws (705) away from the coupling (702) protrudes from the housing (701).

6. The auxiliary installation mechanism of a sprocket according to claim 4, characterized in that: The control rod (9) comprises a main rod (901), one end of which is provided with three auxiliary rods (902) perpendicularly intersecting the main rod (901), and the other end of which is provided with a key groove (903) having the same shape as the key (709), and a limit platform (904) is provided on the main rod (901) above the key groove (903).

Images