A tensioning device for a transmission chain

Abstract

The present invention relates to a tensioning device for a transmission chain, comprising a chain track and a chain arranged on the chain track, a tensioning assembly capable of reciprocating movement being arranged next to the chain track, the chain track comprising a fixed track and a movable track, a slider assembly being arranged between the fixed track and the movable track, the tensioning assembly being fixed to the movable track, the tensioning assembly driving the movable track to move, and the movable track causing the chain to expand outward to achieve tensioning. Through the mutual cooperation between the tensioning assembly, the pusher, and the slider assembly, the overall structure is facilitated in assembly, disassembly, and adjustment, reducing maintenance time and improving maintenance efficiency. At the same time, the overall structure moves more smoothly, has a simple structure, saves materials, and facilitates the cleaning and replacement of parts, maintaining hygiene.

Description

Technical Field

[0001] The invention relates to the field of production and manufacturing of chain transmission components, in particular to a tensioning device for a transmission chain. Background Art

[0002] At present, in many industries, automated transmission is mostly achieved by transmission chains, which are suitable for long-distance transmission. Transmission chains are also used for transmission in stacked spiral quick-freezing devices. When the transmission chain runs on the chain track, it will run from the load-bearing part to the non-load-bearing part. Since the transmission chain is no longer load-bearing, it is in a free and relaxed state. At this time, a certain tightening force is required to tighten the transmission chain to prevent the transmission chain from shaking. Therefore, a freely adjustable structure is set at the tightening point of the transmission chain. It uses a movable installation box with a fixed guide rail, an internal compression spring, and a docking guide rail assembly to realize the track transition section. As a result, the tensioning structure here is quite complicated, installation and disassembly are relatively difficult, and it is prone to failure, increasing maintenance time and cost. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a transmission chain tensioning device which has a simple structure, is easy to operate and is not prone to failure.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a tensioning device for a transmission chain, including a chain track and a chain arranged on the chain track, a tensioning assembly that can reciprocate is arranged next to the chain track, the chain track includes a fixed track and a movable track, a slider assembly is arranged between the fixed track and the movable track, the tensioning assembly is fixed on the movable track, the tensioning assembly drives the movable track to move, and the movable track causes the chain to expand outward to achieve tensioning.

[0005] More specifically, a pushing member is provided on the tensioning assembly, and the pushing member is a rotatable roller disk.

[0006] More specifically, the tensioning assembly includes a fixed portion arranged at the bottom and a movable portion arranged on the fixed portion, and the pushing member is located on the movable portion.

[0007] More specifically, the fixing portion includes a mounting seat, a first movable rod seat arranged on the mounting seat, a second movable rod seat arranged on the mounting seat, and a fixing rod arranged between the first movable rod seat and the second movable rod seat; the movable portion is arranged between the first movable rod seat and the second movable rod seat.

[0008] To be more specific, the movable part includes a fixed seat, a first mounting seat arranged on the fixed seat, a second mounting seat arranged on the fixed seat, a guide rod arranged between the first mounting seat and the second mounting seat, a compression spring sleeved on the guide rod, and a spring seat fixed on the guide rod and limiting the position of the compression spring; the guide rod is arranged on the fixed part, and the movement of the movable part is realized by cooperating with the compression spring and the fixed part; the pushing member is arranged on the fixed seat.

[0009] More specifically, a fixed shaft is provided on the fixed seat, and a roller is provided on the fixed shaft, and the roller can rotate around the fixed shaft.

[0010] To be more specific, the slider assembly includes a movable sliding rail, a fixed frame for limiting the movement of the sliding rail, and a roller arranged on the fixed frame. A limiting groove is opened on the sliding rail, the roller is arranged in the limiting groove, the sliding rail is connected to the movable track, and the fixed frame is connected to the fixed track.

[0011] More specifically, the fixing frame includes a first support plate, a front guide plate, a rear guide plate and a second support plate arranged in sequence, the sliding guide rail is arranged between the front guide plate and the rear guide plate, and the roller is fixedly arranged between the front guide plate and the rear guide plate.

[0012] More specifically, a partition is fixedly arranged between the front guide plate and the rear guide plate, and the partition is located at the rear end of the sliding guide rail.

[0013] More specifically, a guide groove is provided on the front guide plate or the rear guide plate, and a guide block is provided on the sliding guide rail, and the guide block cooperates with the guide groove.

[0014] The beneficial effects of the present invention are: through the mutual cooperation between the tensioning assembly, the pushing member and the slider assembly, the overall structure is more convenient to disassemble and adjust, which reduces maintenance time and improves maintenance efficiency. At the same time, the overall structure moves more smoothly, has a simple structure, saves materials, and is convenient for cleaning and replacing parts to maintain hygiene. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0016] Figure 2 It is a bottom view structural diagram of the present invention;

[0017] Figure 3 It is a schematic diagram of the exploded structure of the tensioning assembly of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the movable guide rail and slider assembly of the present invention;

[0019] Figure 5 It is a schematic cross-sectional structural diagram of the slider assembly of the present invention;

[0020] Figure 6 It is a schematic diagram of the exploded structure of the slider assembly of the present invention.

[0021] In the figure: 1. chain track; 2. chain; 3. tensioning assembly; 4. slider assembly; 11. movable track; 31. fixed part; 32. moving part; 33. roller plate; 34. fixed shaft; 35. spacer; 311. first moving rod seat; 312. second moving rod seat; 313. fixed rod; 321. fixed seat; 322. first mounting seat; 323. second mounting seat; 324. guide rod; 325. compression spring; 326. spring seat; 41. first support plate; 42. front guide plate; 43. sliding guide rail; 44. rear guide plate; 45. second support plate; 46. roller; 47. partition; 48. limit groove; 49. guide groove; 410. guide block. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 、 Figure 2 and Figure 4 The tensioning device for a transmission chain shown in the figure includes a chain track 1 and a chain 2 arranged on the chain track 1. A reciprocating tensioning assembly 3 is arranged next to the chain track 1. The chain track 1 includes a fixed track and a movable track 11. A slider assembly 4 is arranged between the fixed track and the movable track 11. The tensioning assembly 4 drives the movable track 11 to move, and the movable track 11 causes the chain 2 to expand outward to achieve tensioning. At this time, since the chain 2 moves outward, the movable track 11 will move outward along the slider assembly 4. In this solution, the chain 2 to be tensioned and the chain track 1 are U-shaped, the movable track 11 is an arc segment, and the fixed track is a straight segment. A pusher is provided on the tensioning assembly 3, and the pusher is a roller disc 33. The size of the roller disc 33 is just enough to fit into the arc segment of the chain 2.

[0024] like Figure 3The tensioning assembly 3 shown includes a fixed portion 31 arranged at the bottom and a movable portion 32 arranged on the fixed portion, the pushing member is located on the movable portion 32, the movable portion 32 reciprocates on the fixed portion 31, and the movable portion 32 pushes the roller disc 33 to reciprocate; wherein the fixed portion 31 includes a mounting member, a first movable rod seat 311 arranged on the mounting member, a second movable rod seat 312 arranged on the mounting member, and a fixed rod 313 arranged between the first movable rod seat 311 and the second movable rod seat 312, and a plurality of fixed rods 313 can be provided as needed. In this embodiment, two fixed rods 313 are selected, and the two fixed rods 313 are symmetrically arranged; the movable portion 32 includes a fixed seat 321, a first mounting seat 322 arranged on the fixed seat 321, and a second mounting seat 313 arranged on the fixed seat 321. 23. A guide rod 324 disposed between the first mounting seat 322 and the second mounting seat 323, a compression spring 325 sleeved on the guide rod 324, and a spring seat 326 fixed to the guide rod 324 and limiting the position of the compression spring 325. A through hole is provided on each of the first movable rod seat 311 and the second movable rod seat 311. The guide rod 324 passes through two through holes, and the two through holes are respectively located between the two fixed rods 313. The compression spring 325 and the spring seat 326 are both disposed between the first movable rod seat 311 and the second movable rod seat 312. Therefore, one end of the compression spring 325 abuts against the spring seat 326, and the other end of the compression spring 325 abuts against the first movable rod seat 311 or the second movable rod seat 312. The compression spring 325 pushes the spring seat 326 to drive the entire movable portion 32 to move. The fixed seat 321 can be directly fixed to the movable rail 11, pushing the movable rail 11 to drive the chain 2 to move.

[0025] A spacer sleeve 35 is provided on the fixed seat 321, and the fixed shaft 34 is provided in the spacer sleeve 35. The roller disc 33 is provided on the fixed shaft 34 and can rotate around the fixed shaft 34. An annular step is provided on the circumference of the roller disc 33. The annular step is used to clamp the chain 2 and can push the chain 2. At the same time, the movement of the chain 2 drives the roller disc 33 to rotate, so it will not affect the movement of the chain 2.

[0026] like Figure 5 and Figure 6The slider assembly 4 shown includes a movable sliding guide rail 43, a fixed frame for limiting the movement of the sliding guide rail 43, and a roller 46 arranged on the fixed frame. A limiting groove 48 is provided on the sliding guide rail 43, and the roller 46 is arranged in the limiting groove 48. The sliding guide rail 43 is connected to the movable track 11, and the fixed frame is connected to the fixed track. When the movable track 11 moves, the sliding guide rail 43 is pulled to move relative to the fixed frame, and the limiting groove 48 follows the movement of the sliding guide rail 43. The cooperation between the roller 46 and the limiting groove 48 enables the sliding guide rail 43 to move back and forth within a fixed range; and the fixed frame includes a first support plate 41, a front guide plate 42, a rear guide plate 44 and a second support plate 45 arranged in sequence. The sliding guide rail 43 is arranged between the front guide plate 42 and the rear guide plate 44, and the roller 46 is fixedly arranged on the front guide plate A partition 47 is fixedly arranged between the plate 42 and the rear guide plate 44, and between the front guide plate 42 and the rear guide plate 44. The partition 47 is located at the rear end of the sliding guide rail 43. The partition 47 supports the front guide plate 42 and the rear guide plate 44 to a certain space so that the movement of the sliding guide rail 43 will not be affected. In order to make the sliding guide rail 43 run more stably, a guide groove 49 is provided on the front guide plate 42 or the rear guide plate 44, and a guide block 410 is provided on the sliding guide rail 43. The guide block 410 cooperates with the guide groove 49, and the guide block 410 slides in the guide groove 49 to ensure that the movement direction of the sliding guide rail 43 is consistent; a guide groove 49 can also be provided on both the front guide plate 42 and the rear guide plate 44, and two guide blocks 410 are provided on the sliding guide rail 43, and the two guide blocks 410 correspond to the two guide grooves 49 one by one.

[0027] In summary, the fixed seat 321 can be moved by compressing the spring 325, and the movable guide rail 11 can be driven to move, which can tighten the chain 2 and ensure the smooth operation and adjustability of the chain 2. The sliding guide rail 43 cooperates with the roller 46 to reduce friction, which can make the chain 2 tensioned more smoothly. The overall structure is convenient to disassemble and adjust, which reduces maintenance time and improves maintenance efficiency. At the same time, the overall structure moves more smoothly, has a simple structure, saves materials, and is easy to clean and replace parts to maintain hygiene.

[0028] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A tensioning device for a transmission chain, comprising a chain track (1) and a chain (2) arranged on the chain track (1), characterized in that: A reciprocating tensioning assembly (3) is provided beside the chain track (1), the chain track (1) comprises a fixed track and a movable track (11), a slider assembly (4) is provided between the fixed track and the movable track (11), the tensioning assembly (3) is fixed on the movable track (11), the tensioning assembly (3) drives the movable track (11) to move, and the movable track (11) causes the chain (2) to expand outward to achieve tensioning; The slider assembly (4) includes a movable sliding rail (43), a fixing frame for limiting the movement of the sliding rail (43), and a roller (46) arranged on the fixing frame. A limiting groove (48) is provided on the sliding rail (43), and the roller (46) is arranged in the limiting groove (48). The sliding rail (43) is connected to the movable track (11), and the fixing frame is connected to the fixed track. The fixing frame includes a first support plate (41), a front guide plate (42), a rear guide plate (44) and a second support plate (45) arranged in sequence, the sliding guide rail (43) is arranged between the front guide plate (42) and the rear guide plate (44), and the roller (46) is fixedly arranged between the front guide plate (42) and the rear guide plate (44); A pushing member is provided on the tensioning assembly (3), the tensioning assembly (3) comprising a fixed portion (31) provided at the bottom and a movable portion (32) provided on the fixed portion (31), and the pushing member is located on the movable portion (32); The movable portion (32) comprises a fixed seat (321), a first mounting seat (322) arranged on the fixed seat (321), a second mounting seat (323) arranged on the fixed seat (321), a guide rod (324) arranged between the first mounting seat (322) and the second mounting seat (323), a compression spring (325) sleeved on the guide rod (324), and a spring seat (326) fixed on the guide rod (324) and limiting the position of the compression spring (325); the guide rod (324) is arranged on the fixed portion (31), and the movement of the movable portion (32) is realized by the cooperation of the compression spring (325) and the fixed portion (31); the pushing member is arranged on the fixed seat (321).

2. The transmission chain tensioning device according to claim 1, characterized in that: The pushing member is a rotatable roller disc (33).

3. The transmission chain tensioning device according to claim 1, characterized in that: The fixing portion (31) comprises a mounting seat, a first movable rod seat (311) arranged on the mounting seat, a second movable rod seat (312) arranged on the mounting seat, and a fixing rod (313) arranged between the first movable rod seat (311) and the second movable rod seat (312); the movable portion (32) is arranged between the first movable rod seat (311) and the second movable rod seat (312).

4. The transmission chain tensioning device according to claim 1, characterized in that: A fixed shaft (34) is provided on the fixed seat (321), and a roller disc (33) is provided on the fixed shaft (34). The roller disc (33) can rotate around the fixed shaft (34).

5. The transmission chain tensioning device according to claim 1, characterized in that: A partition plate (47) is fixedly arranged between the front guide plate (42) and the rear guide plate (44), and the partition plate (47) is located at the rear end of the sliding guide rail (43).

6. The transmission chain tensioning device according to claim 1 or 5, characterized in that: A guide groove (49) is provided on the front guide plate (42) or the rear guide plate (44), and a guide block (410) is provided on the sliding guide rail (43). The guide block (410) cooperates with the guide groove (49).

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