A groove wheel installation structure

Abstract

The present invention provides a mounting structure for a groove wheel, belonging to the field of groove wheel technology. It solves the problems of low precision and low efficiency of the existing drive block installation. The mounting structure of the groove wheel, the groove wheel includes a plurality of drive blocks, the mounting structure includes a template, the upper surface of the template is provided with a plurality of positioning structures for positioning the drive blocks at intervals along the circumferential direction, the plurality of drive blocks are evenly spaced along the circumferential direction on the upper surface of the template and positioned by the positioning structures, and the lower surface of the template is provided with through holes corresponding to the positions of the drive blocks; when the drive blocks are fixed on the turntable, the positioning structures can release the positioning of the drive blocks. This structure ensures that the drive blocks have a high positioning precision on the template, and the improvement of the punching efficiency will certainly improve the installation efficiency of the drive blocks.

Description

Technical Field

[0001] The invention belongs to the technical field of sheaves, in particular to an installation structure of a sheave. Background Art

[0002] The sheave mechanism is a very common transmission mechanism, generally including a dial and a sheave, the dial is provided with a paddle wheel, the paddle wheel is embedded in the groove of the sheave, when the paddle wheel rotates, the paddle wheel drives the sheave wheel to rotate at the same time, most of the sheave wheels also have an arc surface, which is used to limit the transmission angle of the paddle wheel. The existing traditional sheave is a disc-shaped structure, for example, China Patent Network discloses a sheave mechanism [Authorization Announcement No.: CN205207573U], including a sheave body, the outer edge of the sheave body is evenly distributed with long grooves that match the paddle pin, and an arc groove that matches the locking plate is provided between two adjacent long grooves, the sheave body is a disc-shaped structure, the sheave body is huge in size and heavy in weight, and the installation of the sheave body is very inconvenient, in addition, when part of the long grooves or / and the arc grooves of the sheave body are worn or damaged, the entire sheave body must be replaced, which makes the use cost of the sheave body high.

[0003] At present, in order to reduce the cost of using the sheave and improve the convenience of sheave maintenance, the China Patent Network has disclosed a sheave structure [Application No.: 201510230191.5], which includes a connecting disk, and the connecting disk includes a mounting disk and six drive blocks. The six drive blocks are evenly arranged along the central axis of the mounting disk, and the drive blocks and the mounting disk form a detachable connection structure. The patent discloses that the disc-shaped sheave is divided into a plurality of drive blocks, and the drive blocks are intermittently pushed to achieve intermittent movement of the connecting disk. When individual drive blocks are worn or damaged, only the corresponding drive blocks need to be replaced, which facilitates the maintenance of the sheave and reduces the cost of using the sheave.

[0004] When installing the above-mentioned groove wheel structure, it is first necessary to divide the disc into several installation areas, and then mark the punching positions of three installation holes on each installation area, and then mark the punching positions on the drive block, and the punching positions on the drive block must be consistent with the punching positions on the disc, then drill the punching positions of the drive block in sequence, and then drill the punching positions of the disc in sequence. There must be processing errors in the drilling process, which makes the concentricity of the holes on the disc and the holes on the drive block low, resulting in low installation accuracy of the drive block, which in turn affects the accuracy of the subsequent intermittent motion of the turntable. In addition, after the drilling is completed, several drive blocks are installed on the disc one by one, and each drive block is fixed to the disc by three fasteners. The installation of each groove wheel is like this, and the installation efficiency of the groove wheel is low. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose a groove wheel installation structure. The technical problem to be solved by the present invention is: how to improve the installation accuracy and installation efficiency of the drive block.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A mounting structure for a groove wheel, the groove wheel includes a plurality of drive blocks, characterized in that the mounting structure includes a template, the upper surface of the template is provided with a plurality of positioning structures for positioning the drive blocks at intervals along the circumferential direction, the plurality of drive blocks are evenly spaced along the circumferential direction on the upper surface of the template and positioned by the positioning structures, and the lower surface of the template is provided with through holes corresponding to the positions of the drive blocks; when the drive blocks are fixed on a turntable, the positioning structures can release the positioning of the drive blocks.

[0008] The installation steps of the groove wheel are as follows: ① Place several driving blocks in sequence along the circumferential direction at the position of the positioning structure on the upper surface of the template; ② The positioning structure positions the driving block on the template; ③ Move the template so that the upper surface of the driving block is in contact with the lower surface of the turntable; ④ Extend the drill bit of the drilling equipment into the through hole to drill the driving block and the turntable, so that both the driving block and the turntable have mounting holes; ⑤ After the driving block and the turntable are drilled, bolts or screws pass through the mounting holes on the driving block and the turntable in sequence and fix the driving block to the turntable; ⑥ The positioning structure releases the positioning of the driving block and moves the template downward to separate the driving block from the template, completing the fixation of the driving block on the turntable.

[0009] In step ④, the position of the through hole on the template is the punching position of the drive block and the turntable. There is no need to mark the punching position on the turntable. The drill bit punches the drive block and the turntable at the same time, which not only improves the punching efficiency, but also improves the concentricity of the mounting holes on the drive block and the mounting holes on the turntable, ensuring that the drive block has a higher positioning accuracy on the template. The improvement in drilling efficiency will definitely improve the installation efficiency of the drive block. In addition, after the drilling is completed, the drive block and the turntable can be directly fixed through step ⑤, further improving the installation efficiency of the drive block; in step ②, after the positioning structure releases the positioning of the drive block, the template and the drive block can be separated during the process of moving the template downward in step ⑥.

[0010] In the above-mentioned installation structure of a groove wheel, the groove wheel includes a plurality of driving blocks, and is characterized in that the positioning structure includes a fastener, and the fastener passes through the template and the driving block in sequence from the bottom of the template to position the driving block on the template. The driving block is positioned on the template by the fastener, and in step ⑥, the fastener is removed from the bottom of the template, so that the driving block can be separated from the template during the downward movement of the template.

[0011] In the above-mentioned installation structure of a groove wheel, a positioning hole is provided at the position of the template corresponding to the driving block, and a threaded hole corresponding to the positioning hole is provided on the driving block, and the fastener is threadedly connected with the threaded hole after passing through the positioning hole. First, the fastener is inserted upward into the positioning hole, and then the upper end of the fastener is extended into the threaded hole and threadedly connected with the threaded hole to achieve the fixation of the driving block and the template. In step ⑥, the fastener is rotated to release the connection between the fastener and the threaded hole, and then the fastener is pulled out downward to remove the fastener from the bottom of the template.

[0012] In the above-mentioned installation structure of a groove wheel, a plurality of positioning blocks are arranged at intervals along the circumferential direction on the upper surface of the template, and a driving block positioning groove is formed between two adjacent positioning blocks, and the driving block is arranged in the driving block positioning groove. The driving block is embedded in the driving block positioning groove, and the driving block positioning groove positions the driving block, thereby facilitating the fastener to fix the driving block on the template.

[0013] In the above-mentioned installation structure of a groove wheel, the side surfaces on the left and right sides of the driving block are both inclined surfaces, and the distance between the two inclined surfaces gradually shortens from front to back, and the two inclined surfaces of the driving block are respectively in contact with the side surfaces of the corresponding positioning block. In this structure, the small head end of the driving block extends into one end of the driving block positioning groove, and then the driving block is pushed into the driving block positioning groove. When the two inclined surfaces of the driving block are respectively in contact with the side surfaces of the corresponding positioning block, the driving block is positioned in place in the driving block positioning groove.

[0014] In the above-mentioned installation structure of a groove wheel, the positioning block is connected to the template by screws, the positioning block is a rectangular parallelepiped, and the positioning block is arranged along the radial direction of the template. The positioning block is arranged so that two adjacent driving blocks are separated by the positioning block. When the driving block is fixed on the lower surface of the turntable, a strip groove is formed between the two adjacent driving blocks. The pin rod of the driving device extends into the strip groove, and the pin rod rotates circumferentially to drive the turntable to rotate.

[0015] In the above-mentioned installation structure of a groove wheel, the upper surface of the driving block has a boss at the position corresponding to the through hole. After the boss is set, the thickness of the driving block is increased, so that after the driving block and the turntable are installed, the upper surface of the driving block and the lower surface of the turntable have a certain distance, so that the driving block contacts the lower position of the upper end of the round pin of the active dial, avoiding excessive force on the upper end of the round pin, and facilitating the round pin to drive the driving block to rotate. If there is no boss, the upper surface of the driving block and the upper surface of the turntable are attached together, and the upper end surface of the round pin must be infinitely close to the upper surface of the turntable to drive the driving block to rotate stably. The installation of the round pin is extremely difficult, and in this case, the upper end of the round pin is subjected to huge force, and the round pin is easy to break.

[0016] In the above-mentioned installation structure of a groove wheel, a countersunk hole is opened at a position corresponding to the boss on the lower surface of the driving block, and the countersunk hole is connected to the through hole. After the driving block is fixed to the turntable by a screw or a bolt, the head of the screw or the bolt is located in the countersunk hole to avoid interference between the active dial and the round pin and the screw or the bolt when they rotate.

[0017] In the above-mentioned installation structure of a groove wheel, the template is in a circular ring shape. The circular ring-shaped template is light in weight, and in step ③, it is convenient to calibrate the concentricity of the template and the turntable.

[0018] In the above-mentioned installation structure of a sheave, one end of the driving block has an arc-shaped positioning groove. When the sheave driving mechanism drives the driving block to rotate, the locking plate fits with the positioning groove, and the driving block is positioned by the locking plate, so as to achieve the purpose of intermittent rotation of the turntable.

[0019] Compared with the prior art, the installation structure of the groove wheel of the present invention has the following advantages: the position of the through hole on the template is the drilling position of the drive block and the turntable, and there is no need to mark the drilling position on the turntable. The drill bit can perform drilling operations on the drive block and the turntable at the same time, which not only improves the drilling efficiency, but also improves the concentricity of the mounting holes on the drive block and the mounting holes on the turntable, ensuring that the drive block has a higher positioning accuracy on the template. The improvement in drilling efficiency will definitely improve the installation efficiency of the drive block. In addition, the drive block can be directly fixed to the turntable after the drilling is completed, further improving the installation efficiency of the drive block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the present invention from another angle.

[0022] Figure 3 It is a schematic diagram of the exploded structure of the template and the driving block of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the mold of the present invention installing the driving block on the turntable.

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the mold of the present invention installing the driving block on the turntable.

[0025] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of part A in the middle.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the driving block of the present invention installed on the turntable.

[0027] In the figure, 1, driving block; 11, countersunk hole; 12, inclined surface; 13, threaded hole; 14, boss; 15, positioning groove; 2, template; 21, through hole; 22, positioning hole; 3, positioning structure; 31, fastener; 32, positioning block; 5, driving block positioning groove; 6, screw; 7, turntable; 8, mounting hole; 4, bolt. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Example 1

[0029] like Figure 1 and Figure 2 As shown, it includes a template 2, which is in a circular ring shape, and the groove wheel includes a plurality of driving blocks 1. One end of the driving block 1 has an arc-shaped positioning groove 15. The upper surface of the template 2 is provided with a plurality of positioning structures 3 for positioning the driving block 1 at intervals along the circumferential direction. The plurality of driving blocks 1 are evenly spaced along the circumferential direction on the upper surface of the template 2 and are positioned by the positioning structures 3. A through hole 21 is provided on the lower surface of the template 2 at a position corresponding to the driving block 1. When the driving block 1 is fixed on the turntable 7, the positioning structure 3 can release the positioning of the driving block 1. The positioning structure 3 in this embodiment includes a fastener 31, and the fastener 31 passes through the template 2 and the driving block 1 in sequence from the bottom of the template 2 to position the driving block 1 on the template 2. Specifically, each driving block 1 is provided with a threaded hole 13 corresponding to the positioning hole 22. The fastener 31 passes through the positioning hole 22 and is threadedly connected with the threaded hole 13. The number of the driving blocks 1 is the same as the number of the driving block positioning grooves 5.

[0030] like Figure 1 to Figure 7As shown, the installation steps of the groove wheel are as follows: ① Place each driving block 1 in the corresponding driving block positioning groove 5, so that several driving blocks 1 are placed at intervals along the circumferential direction on the upper surface of the template 2, and the positioning holes 22 and the threaded holes 13 correspond to each other. The driving block positioning groove 5 positions the driving block 1 circumferentially. In step ②, the fastener 31 fixes the driving block 1 to the template 2 to prevent the driving block 1 from rotating; ② The fastener 31 is inserted into the positioning holes 22 and the threaded holes 13 from the bottom of the template 2 to the top, so that the driving block 1 is fixed to the template 2. The fastener 31 is a screw or a bolt. The screw or bolt passes through the positioning hole 22 and is threadedly connected with the threaded hole 13. The head of the screw or bolt is located on the lower surface side of the template 2; ③ Move the template 2 so that the upper surface of the driving block 1 is in contact with the lower surface of the turntable 7, and the template 2 and the turntable 7 are calibrated for concentricity; ④ The drill bit extends into the through hole 21 to drill the driving block 1 and the turntable 7, so that the driving block 1 and the turntable 7 both have mounting holes 8, The position of the through hole 21 on the template 2 is the drilling position of the drive block 1 and the turntable 7. The drill bit performs the drilling operation on the drive block 1 and the turntable 7 at the same time, which not only improves the drilling efficiency, but also improves the concentricity of the mounting hole 8 on the drive block 1 and the mounting hole 8 on the turntable 7, ensuring that the drive block 1 has a high positioning accuracy on the template 2. The improvement of the drilling efficiency will definitely improve the installation efficiency of the drive block 1; ⑤ After the drilling of the drive block 1 and the turntable 7 is completed, the bolt 9 passes through the mounting holes 8 on the drive block 1 and the turntable 7 in turn and fixes the drive block 1 on the turntable 7. After the drilling is completed, the drive block 1 is directly fixed to the turntable 7, further improving the installation efficiency of the drive block 1; ⑥ Remove the fastener 31 downward from the bottom of the template 2, and then move the template 2 downward to separate the drive block 1 from the template 2, and complete the installation of the drive block 1 on the turntable 7.

[0031] like Figure 1 and Figure 2 As shown, the positioning structure 3 also includes a plurality of positioning blocks 32 arranged at intervals along the circumferential direction on the upper surface of the template 2. The positioning blocks 32 are connected to the template 2 by screws 6. A driving block positioning groove 5 is formed between two adjacent positioning blocks 32. The driving block 1 is arranged in the driving block positioning groove 5. There are three through holes 21 and one positioning hole 22. The three through holes 21 and the positioning hole 22 are all located in the driving block positioning groove 5. In the process of positioning the driving block 1 on the template, the driving block 1 is first placed in the corresponding positioning groove 5, and the positioning groove 5 positions the driving block 1. At this time, the axis of the positioning hole 22 overlaps with the axis of the threaded hole 13, which is convenient for the next step of the fastener to position the driving block 1 on the template.

[0032] Furthermore, the side surfaces on the left and right sides of the driving block 1 are both inclined surfaces 12, and the distance between the two inclined surfaces 12 gradually shortens from front to back. The positioning block 32 is a rectangular parallelepiped, and the positioning block 32 is arranged along the radial direction of the template 2. The two inclined surfaces 12 of the driving block 1 are respectively in contact with the side surfaces of the corresponding positioning blocks 32. The small head end of the driving block 1 extends into one end of the driving block positioning groove 5, and then the driving block 1 is pushed into the driving block positioning groove 5. When the two inclined surfaces 12 of the driving block 1 are respectively in contact with the side surfaces of the corresponding positioning blocks 32, the driving block 1 is positioned in place in the driving block positioning groove 5. At this time, the positioning hole 22 and the threaded hole 13 are aligned, which facilitates the subsequent connection of the fastener 31 with the positioning hole 22 and the threaded hole 13.

[0033] like Figure 2 and Figure 6 As shown, the upper surface of the driving block 1 has three bosses 14, and the three bosses 14 correspond to the three through holes 21 one by one. After the drilling in step ④ is completed, the mounting hole 8 passes through the boss 14. The setting of the boss 14 increases the thickness of the driving block 1, so that after the driving block 1 and the turntable 7 are installed, the upper surface of the driving block 1 and the lower surface of the turntable 7 have a certain distance. When working, it is the round pin of the active dial that drives the driving block 1 to rotate, so that the upper end of the round pin contacts the driving block 1 at the lower position, avoiding excessive force on the upper end of the round pin, and facilitating the round pin to drive the driving block to rotate.

[0034] like Figure 6 and Figure 7 As shown, a countersunk hole 11 is provided on the lower surface of the driving block 1 at a position corresponding to the boss 14, and the countersunk hole 11 is connected to the through hole 21. The driving block 1 is fixedly connected to the turntable 7 by bolts 4, and the head of the bolt 4 is located in the countersunk hole 11 to avoid interference with the active dial and the round pin. Example 2

[0035] The structure of this embodiment is basically the same as that of the above-mentioned embodiment 1, except that: the positioning structure 3 of this embodiment only uses fasteners 31, and the fasteners 31 pass through the template 2 and the driving block 1 in sequence from the bottom of the template 2 to position the driving block 1 on the template 2. Specifically, each driving block 1 is provided with a threaded hole 13 that can correspond to the positioning hole 22, and the fasteners 31 pass through the positioning hole 22 and are threadedly connected with the threaded hole 13. Example 3

[0036] The structure of this embodiment is basically the same as that of the above-mentioned embodiment 1, with the difference being that the positioning structure 3 of this embodiment only uses a plurality of positioning blocks 32 arranged at intervals along the circumferential direction on the upper surface of the template 2, the positioning blocks 32 are connected to the template 2 by screws 6, and a driving block positioning groove 5 is formed between two adjacent positioning blocks 32, and the driving block 1 is arranged in the driving block positioning groove 5. Example 4

[0037] The structure of this embodiment is basically the same as that of the above-mentioned embodiment 1, except that: the positioning structure of this embodiment is a plurality of positioning grooves for accommodating the driving block 1 that are spaced apart along the circumferential direction on the upper surface of the template 2 .

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A sheave installation structure, the sheave comprising a plurality of drive blocks (1), characterized in that: The mounting structure comprises a template (2), wherein a plurality of positioning structures (3) for positioning the driving block (1) are arranged at intervals along the circumferential direction on the upper surface of the template (2), wherein the plurality of driving blocks (1) are evenly spaced along the circumferential direction on the upper surface of the template (2) and are positioned by the positioning structures (3), and a through hole (21) is provided on the lower surface of the template (2) at a position corresponding to the driving block (1); when the driving block (1) is fixed on the turntable (7), the positioning structure (3) can release the positioning of the driving block (1).

2. A sheave installation structure according to claim 1, characterized in that: The positioning structure (3) comprises a fastener (31), wherein the fastener (31) passes through the template (2) and the driving block (1) in sequence from below the template (2) to position the driving block (1) on the template (2).

3. A sheave installation structure according to claim 2, characterized in that: The template (2) is provided with a positioning hole (22) at a position corresponding to the driving block (1), the driving block (1) is provided with a threaded hole (13) corresponding to the positioning hole (22), and the fastener (31) passes through the positioning hole (22) and is threadedly connected to the threaded hole (13).

4. A sheave installation structure according to claim 1 or 2, characterized in that: The positioning structure (3) comprises a plurality of positioning blocks (32) arranged at intervals along the circumferential direction on the upper surface of the template (2), a driving block positioning groove (5) being formed between two adjacent positioning blocks (32), and the driving block (1) being arranged in the driving block positioning groove (5).

5. A sheave installation structure according to claim 4, characterized in that: The left and right side surfaces of the driving block (1) are both inclined surfaces (12), and the distance between the two inclined surfaces (12) gradually shortens from front to back. The two inclined surfaces (12) of the driving block (1) are respectively in contact with the side surfaces of the corresponding positioning block (4).

6. A sheave installation structure according to claim 5, characterized in that: The positioning block (32) is connected to the template (2) via screws (6); the positioning block (32) is in the form of a rectangular parallelepiped; the positioning block (32) is arranged along the radial direction of the template.

7. The installation structure of a sheave according to claim 1, characterized in that: The upper surface of the driving block (1) has a boss (14) at a position corresponding to the through hole (21).

8. A sheave installation structure according to claim 7, characterized in that: A countersunk hole (11) is provided on the lower surface of the driving block (1) at a position corresponding to the boss (14), and the countersunk hole (11) is connected to the through hole (21).

9. The installation structure of a sheave according to claim 1, characterized in that: The template (2) is in the shape of a ring.

10. The installation structure of a sheave according to claim 1, characterized in that: One end of the driving block (1) has an arc-shaped positioning groove (15).

Images