Elevator gear positioning mechanism

Abstract

The utility model discloses an elevator gear positioning mechanism, relates to the related field of elevator gear positioning, and aims to solve the problems that in the prior art, when a gear is positioned by limiting the position of a gear groove and a large axial load is borne, the gear positioning effect is poor, the stability is weak, and the bearing capacity is small. The mounting frame comprises a C-shaped base support, a second positioning clamping piece and a first positioning clamping piece are arranged at the front end and the rear end of the C-shaped base support respectively, the second positioning clamping piece and the first positioning clamping piece each comprise a positioning arm, and the positioning arms are arranged in the left side direction and the right side direction. A conical clamping piece is fixed to the tail end, facing one end of the C-shaped foundation support, of the positioning arm C-shaped foundation support, the other end of the conical clamping piece is integrally connected with a cylindrical clamping piece, and the joint of the cylindrical clamping piece and the conical clamping piece is in arc smooth transition.

Description

Technical Field

[0001] This utility model relates to the field of elevator gear positioning, specifically an elevator gear positioning mechanism. Background Technology

[0002] As a core piece of vertical transportation equipment, elevators are widely used in construction, industry, warehousing, and other fields. Their core function is to drive a load-bearing platform or car up and down along guide rails via a power system, achieving efficient transportation of personnel or goods. Modern elevators rely on various mechanical transmission methods, among which gear transmission is the preferred choice for medium and low-speed elevators due to its high torque transmission efficiency, stability, and long service life. In the elevator transmission system, the meshing accuracy of the gears directly affects the smoothness, noise level, and safety of the equipment. Any slight misalignment or gap can lead to increased vibration, accelerated wear, or even safety accidents such as runaway. Furthermore, the stability of gear positioning is also related to transmission efficiency: for example, helical gears may experience displacement due to axial force under heavy loads, resulting in uneven load distribution on the tooth surface and reduced transmission efficiency. Therefore, the axial and radial positioning of the gears is a critical aspect of elevator transmission design.

[0003] The impact loads caused by frequent start-stop cycles of elevators require gears with higher resistance to misalignment, while long-term operation necessitates reduced maintenance intervention. Against this backdrop, a gear positioning mechanism is needed to meet the reliability requirements of modern elevators. While existing technologies possess gear positioning capabilities, they typically rely on restricting the position of the gear slots. Under radial or axial loads, they primarily depend on the friction between the gear slots and the locating pins to maintain gear position. While this provides relatively stable positioning under large radial loads, the positioning effect deteriorates under large axial loads, resulting in weaker stability and lower load-bearing capacity. Utility Model Content

[0004] The purpose of this utility model is to provide a gear positioning mechanism for an elevator, so as to solve the problem mentioned in the background art that restricting the position of the gear groove for gear positioning results in poor gear positioning effect when bearing large axial loads, leading to weak stability and low load-bearing capacity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gear positioning mechanism for an elevator, comprising a mounting frame, the mounting frame comprising a C-shaped base support, the front and rear ends of the C-shaped base support being respectively provided with a second positioning clip and a first positioning clip, both the second and first positioning clips comprising a positioning arm, the positioning arms being arranged in the left and right directions, a conical clip being fixed to the end of the positioning arm facing the C-shaped base support, the other end of the conical clip being integrally connected to a cylindrical clip, the connection between the cylindrical clip and the conical clip having a smooth arc transition.

[0006] Preferably, the C-shaped base bracket has a lower support frame centrally connected to both its front and rear ends. The upper end of the lower support frame is rotatably connected to a rotating gear via a shaft. Both the first and second positioning clips include an outwardly expanding bracket. One end of the outwardly expanding bracket is connected to a positioning arm, and the other end of the outwardly expanding bracket is connected to an inner driven rack. The inner driven rack is arranged in the front-rear direction. The upper and lower ends of the inner driven racks on the first and second positioning clips are respectively provided, and the inner driven rack meshes with the rotating gear.

[0007] Preferably, a driving hydraulic cylinder is installed on one side of the C-shaped base support, and an intermediate moving plate is installed inside the C-shaped base support along the output rod end of the driving hydraulic cylinder. A side driving rack is fixed at the middle of both the front and rear ends of the intermediate moving plate, and the side driving rack is meshed with the rotating gears at the front and rear ends.

[0008] Preferably, an action rod is fixed on the other side of the intermediate motion plate, and the other end of the action rod passes through the upper plate of the C-shaped base support and is fixed with a positioning block. The outer side of the positioning block is provided with an array of lifting gear positioning grooves.

[0009] Preferably, an extension plate is connected to one side of the outward-expanding bracket, and a first limiting sliding rod is fixed to one end of the extension plate facing the C-shaped base bracket. The upper and lower ends of the first limiting sliding rods on the first positioning clip and the second positioning clip are respectively provided. A second limiting sliding rod is fixed to one end of the positioning arm facing the C-shaped base bracket, and the upper and lower ends of the second limiting sliding rods on the first positioning clip and the second positioning clip are respectively provided.

[0010] Preferably, the left and right sides of the front and rear end faces of the C-shaped base support are connected to side plates, and the side plates are provided with slots for the first limiting sliding rod or the second limiting sliding rod to pass through.

[0011] Preferably, mounting brackets are welded and fixed on both the left and right sides of the front and rear ends of the C-shaped base bracket, and mounting holes are provided on the mounting brackets.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) In this utility model, during the positioning process, the cylindrical clamp first contacts the slot on the surface of the lifting gear. As the output rod of the driving hydraulic cylinder continues to move, the conical clamp gradually enters the slot on the surface of the lifting gear and deforms itself by pressing inward, further positioning the lifting gear. This method can perform both axial and radial positioning. When subjected to radial or axial loads, it is fixed by the engagement of the structure, which improves the positioning stability but increases the load-bearing capacity.

[0014] (2) In this utility model, by driving the hydraulic cylinder to push the intermediate motion plate, the action rod and the positioning block to move, the positioning groove of the elevator gear and the teeth of the elevator gear are precisely engaged, which can accurately limit the movement of the elevator gear, greatly improve the positioning accuracy, ensure that the elevator gear is always in a stable position during operation, and effectively avoid the operation caused by gear deviation.

[0015] (3) In this utility model, the driving hydraulic cylinder simultaneously drives the positioning block, the first positioning card and the second positioning card to position the elevator gear. This dual positioning method greatly enhances the stability of positioning, so that the elevator gear will not be disturbed by external factors during operation, thus ensuring the smooth operation of the elevator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a gear positioning mechanism for an elevator according to the present invention from a frontal perspective;

[0017] Figure 2 This is a schematic diagram of the overall structure of a gear positioning mechanism for an elevator according to the present invention, viewed from below.

[0018] Figure 3 This is a top view of a gear positioning mechanism for an elevator according to the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of a gear positioning mechanism for an elevator after removing the first and second positioning clips.

[0020] Figure 5 This is a schematic diagram of the structure of the first positioning clip of a gear positioning mechanism for an elevator according to the present invention.

[0021] In the diagram: 1. Mounting frame; 2. C-shaped base bracket; 3. Lower support frame; 4. Side upright plate; 5. Mounting bracket; 6. Drive hydraulic cylinder; 7. Intermediate moving plate; 8. Action rod; 9. Positioning block; 10. Lifting machine gear positioning groove; 11. Side drive rack; 12. Rotating gear; 13. First positioning clip; 14. Second positioning clip; 15. Outer expansion bracket; 16. Inner driven rack; 17. Extended upright plate; 18. First limiting sliding rod; 19. Positioning arm; 20. Second limiting sliding rod; 21. Conical clip; 22. Columnar clip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of a gear positioning mechanism for a lifting platform, mainly comprising a mounting frame 1. The mounting frame 1 is the basic support structure of the entire positioning mechanism, providing a stable platform for the installation of other components. The mounting frame 1 includes a C-shaped base bracket 2. The design of the C-shaped base bracket 2 makes the positioning mechanism more flexible and convenient during installation and use. Lower support frames 3 are centrally connected to both the front and rear ends of the C-shaped base bracket 2. A rotating gear 12 is rotatably connected to the upper end of the lower support frame 3 via a shaft. Mounting brackets 5 are welded and fixed to the left and right sides of both the front and rear ends of the C-shaped base bracket 2. Mounting brackets 5 have mounting holes. Through the mounting holes on the mounting brackets 5, the positioning mechanism can be easily installed onto the lifting platform, realizing a quick connection between the positioning mechanism and the lifting platform and improving installation efficiency.

[0024] A driving hydraulic cylinder 6 is installed on one side of the C-shaped base bracket 2. An intermediate moving plate 7 is installed inside the C-shaped base bracket 2 along the output rod end of the driving hydraulic cylinder 6. Side driving racks 11 are fixed at the center of both the front and rear ends of the intermediate moving plate 7, and the side driving racks 11 are meshed with the rotating gears 12 at both the front and rear ends. When the output rod end of the driving hydraulic cylinder 6 extends, it pushes the intermediate moving plate 7 to move, causing the side driving racks 11 to move accordingly, which in turn drives the rotating gears 12 to rotate, thus realizing the transmission and conversion of power and providing power support for the movement of the positioning mechanism.

[0025] The C-shaped base support 2 has a second positioning clip 14 and a first positioning clip 13 at its front and rear ends, respectively. Both the second positioning clip 14 and the first positioning clip 13 include a positioning arm 19, which is arranged laterally. This arrangement allows the positioning arm 19 to better contact the lifting gear, achieving precise positioning. A conical clip 21 is fixed to the end of the positioning arm 19 facing the C-shaped base support 2. A cylindrical clip 22 is integrally connected to the other end of the conical clip 21, with a smooth, arc-shaped transition at the connection point. This design allows the cylindrical clip 22 to first contact the slot on the surface of the lifting gear, guiding the entry of the conical clip 21. The conical clip 21 gradually enters the slot and deforms inward, further enhancing the stability and reliability of the positioning and effectively preventing loosening and displacement of the lifting gear during operation.

[0026] Both the first positioning clamp 13 and the second positioning clamp 14 include an outer expansion bracket 15. One end of the outer expansion bracket 15 is connected to the positioning arm 19, and the other end of the outer expansion bracket 15 is connected to an inner driven rack 16. The inner driven rack 16 is arranged in the front-to-back direction. The upper and lower ends of the inner driven rack 16 on the first positioning clamp 13 and the second positioning clamp 14 are respectively set, and the inner driven rack 16 meshes with the rotating gear 12. When the driving hydraulic cylinder 6 pushes the intermediate moving plate 7 to move, the side driving rack 11 drives the rotating gear 12 to rotate, and then drives the first positioning clamp 13 and the second positioning clamp 14 to move in the direction of the gear through the inner driven rack 16, realizing the precise docking of the positioning clamps with the lifting gear, and improving the accuracy and efficiency of positioning.

[0027] The rotating gear 12 is relatively high, with its outer middle position meshing with the side drive rack 11, and its upper and lower ends meshing with two upper and lower inner driven racks 16 respectively. Furthermore, there is a certain distance between the inner driven racks 16 and the intermediate moving plate 7, ensuring that the two structures do not interfere with each other.

[0028] An extension plate 17 is connected to one side of the outward-expanding bracket 15. A first limiting sliding rod 18 is fixed to the end of the extension plate 17 facing the C-shaped base bracket 2. The first limiting sliding rod 18 is respectively set at the upper and lower ends of the first positioning clip 13 and the second positioning clip 14. A second limiting sliding rod 20 is fixed to the end of the positioning arm 19 facing the C-shaped base bracket 2. The second limiting sliding rod 20 is respectively set at the upper and lower ends of the first positioning clip 13 and the second positioning clip 14. There is also a certain distance between the two first limiting sliding rods 18 and the two second limiting sliding rods 20 and the intermediate moving plate 7. The staggered arrangement is to avoid the movement process of the intermediate moving plate 7.

[0029] The C-shaped base bracket 2 has side plates 4 connected to the left and right sides of its front and rear end faces. The side plates 4 have slots for the first limiting sliding rod 18 or the second limiting sliding rod 20 to pass through. The first limiting sliding rod 18 and the second limiting sliding rod 20 slide within the slots of the side plates 4, which serves to limit and guide movement, ensuring the stability and accuracy of the first positioning clip 13 and the second positioning clip 14 during movement, and preventing the positioning clips from shifting or shaking during movement.

[0030] An actuating rod 8 is fixed to the other side of the intermediate moving plate 7. The other end of the actuating rod 8 passes through the upper plate of the C-shaped base support 2 and is fixed with a positioning block 9. The outer side of the positioning block 9 has an array of lifting gear positioning grooves 10. Under the action of the driving hydraulic cylinder 6, the positioning block 9 moves towards the lifting gear, and the lifting gear positioning grooves 10 mesh with the teeth of the lifting gear, restricting the movement of the lifting gear and ensuring the stability of the lifting gear during operation.

[0031] Working principle: The output rod end of the driving hydraulic cylinder 6 extends to push the intermediate moving plate 7, the action rod 8 and the positioning block 9 to move. The positioning block 9 moves towards the side of the elevator gear, and the positioning groove 10 of the elevator gear meshes with the teeth of the elevator gear, restricting the movement of the elevator gear.

[0032] When the intermediate moving plate 7 moves towards the lifting gear, the side drive rack 11 moves synchronously. Through the meshing connection between the side drive rack 11 and the rotating gear 12, the rotating gear 12 is driven to rotate towards the center. Since the rotating gear 12 meshes with the inner driven rack 16 on the first positioning clip 13 and the second positioning clip 14, it drives the first positioning clip 13 and the second positioning clip 14 to move towards the gear. The cylindrical clip 22 first contacts the slot opened on the surface of the lifting gear. As the output rod end of the drive hydraulic cylinder 6 continues to move, the conical clip 21 gradually enters the slot opened on the surface of the lifting gear and moves inward to squeeze and deform itself to further position the lifting gear.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gear positioning mechanism for an elevator, comprising a mounting frame (1), characterized in that: The mounting frame (1) includes a C-shaped base bracket (2). The front and rear ends of the C-shaped base bracket (2) are respectively provided with a second positioning clip (14) and a first positioning clip (13). The second positioning clip (14) and the first positioning clip (13) both include a positioning arm (19). The positioning arm (19) is arranged in the left and right directions. The end of the positioning arm (19) facing the C-shaped base bracket (2) is fixed with a conical clip (21). The other end of the conical clip (21) is integrally connected with a columnar clip (22). The connection between the columnar clip (22) and the conical clip (21) is smoothly transitioned by an arc.

2. The gear positioning mechanism for an elevator according to claim 1, characterized in that: The C-shaped base bracket (2) is centrally connected to a lower support frame (3) at both the front and rear ends. The upper end of the lower support frame (3) is rotatably connected to a rotating gear (12) via a shaft. The first positioning clip (13) and the second positioning clip (14) both include an outer expansion bracket (15). One end of the outer expansion bracket (15) is connected to the positioning arm (19), and the other end of the outer expansion bracket (15) is connected to an inner driven rack (16). The inner driven rack (16) is arranged in the front-back direction. The upper and lower ends of the inner driven rack (16) on the first positioning clip (13) and the second positioning clip (14) are respectively set, and the inner driven rack (16) meshes with the rotating gear (12).

3. The gear positioning mechanism for an elevator according to claim 2, characterized in that: A driving hydraulic cylinder (6) is installed on one side of the C-shaped base support (2). An intermediate motion plate (7) is installed inside the C-shaped base support (2) along the output rod end of the driving hydraulic cylinder (6). A side drive rack (11) is fixed at the middle of the front and rear ends of the intermediate motion plate (7). The side drive rack (11) is meshed with the rotating gears (12) at the front and rear ends.

4. The gear positioning mechanism for an elevator according to claim 3, characterized in that: An actuating rod (8) is fixed on the other side of the intermediate motion plate (7). The other end of the actuating rod (8) passes through the upper plate of the C-shaped base support (2) and is fixed with a positioning block (9). The outer side of the positioning block (9) is provided with a lifting gear positioning groove (10).

5. A gear positioning mechanism for an elevator according to claim 2, characterized in that: The extended support (15) is connected to an extension plate (17) on one side. The end of the extension plate (17) facing the C-shaped base support (2) is fixed with a first limiting sliding rod (18). The first limiting sliding rod (18) on the first positioning clip (13) and the second positioning clip (14) are respectively set at the upper and lower ends. The end of the positioning arm (19) facing the C-shaped base support (2) is fixed with a second limiting sliding rod (20). The second limiting sliding rod (20) on the first positioning clip (13) and the second positioning clip (14) are respectively set at the upper and lower ends.

6. The gear positioning mechanism for an elevator according to claim 1, characterized in that: The C-shaped base support (2) has side plates (4) connected to the left and right sides of the front and rear end faces. The side plates (4) have slots for the first limiting sliding rod (18) or the second limiting sliding rod (20) to pass through.

7. The gear positioning mechanism for an elevator according to claim 1, characterized in that: The C-shaped base bracket (2) has mounting brackets (5) welded and fixed on both the left and right sides of its front and rear ends, and mounting holes are provided on the mounting brackets (5).

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