Safety interlocking device for pipeline beveling machine

Abstract

A safety interlocking device for a pipeline beveling machine comprises a near-end door interlocking assembly, the near-end door interlocking assembly comprises a first support, a first plug pin and a pressing block, the first plug pin is arranged on the first support in a sliding mode, and the pressing block is fixed to a near-end door; the length of the first plug pin is set so that the first plug pin can only block the pressing block or block the rotating path of the cutterhead operating handle; the far-end door interlocking assembly comprises an operation part, an execution part and a flexible shaft, the operation part comprises a second support and a second bolt, and the second bolt is arranged on the second support in a sliding mode; the execution part comprises a third support, a third bolt and a pressing block, the third support is located on one side of the far-end door, the third bolt is arranged on the third support in a sliding mode, and the pressing block is installed on the far-end door; the second bolt and the third bolt are connected into an integral action piece through a flexible shaft; and the length of the whole action piece is set, so that the whole action piece can only be blocked on the pressing block or on the rotating path of the cutterhead operating handle. According to the utility model, the safety in the process of maintaining and replacing the cutter of the beveling machine is improved.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline construction equipment, and particularly relates to a safety interlock device for a pipeline beveling machine. Background Technique

[0002] With the development of the natural gas, petroleum, and chemical industries, beveling machines have become indispensable equipment for beveling processing in pipeline construction operations, and safety issues cannot be ignored. In practical applications, in order to facilitate the adjustment, replacement, and maintenance of beveling machine tools, a maintenance door is designed on the machine frame. However, after the maintenance door is opened, the tool disc operating handle can still be operated to rotate the tool disc, which has a certain safety risk. Content of the Utility Model

[0003] The purpose of the utility model is to provide a safety interlock device for a pipeline beveling machine, which associates the actions of the tool disc operating handle and the maintenance door, so that when operating the tool disc operating handle, two maintenance doors must be closed, and conversely, when any one of the maintenance doors is opened, the tool disc operating handle cannot be operated, improving the safety during the maintenance and replacement of tools.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a safety interlock device for a pipeline beveling machine, including a proximal door interlock assembly, which is arranged on the machine frame between the proximal door of the pipeline beveling machine and the tool disc operating handle, and includes a first bracket, a first bolt, and a pressing block. The first bolt is slidably arranged on the first bracket, and the pressing block is fixed on the proximal door; the length of the first bolt is set so that the first bolt can only block on the pressing block to prevent the proximal door from rotating outwards or can only block on the rotation path of the tool disc operating handle;

[0005] A distal door interlock assembly is arranged on the machine frame between the distal door of the pipeline beveling machine and the tool disc operating handle, and includes an operating part, an executing part, and a flexible shaft. The operating part includes a second bracket and a second bolt. The second bracket and the first bracket are respectively located on opposite sides of the tool disc operating handle. The second bolt is slidably arranged on the second bracket; the executing part includes a third bracket, a third bolt, and a pressing block. The third bracket is located on one side of the distal door. The third bolt is slidably arranged on the third bracket, and the pressing block is installed on the distal door; the second bolt and the third bolt are connected by the flexible shaft to form an integral moving part with synchronous actions; the length of the integral moving part is set so that the integral moving part can only block on the pressing block to prevent the distal door from rotating outwards or block on the rotation path of the tool disc operating handle.

[0006] The pressing block in the proximal door interlock assembly is arranged on the hinge of the proximal door and is located on the side where the hinge connects the proximal door.

[0007] The pressing block in the remote door interlock assembly is arranged on the hinge of the remote door and is located on the side where the hinge connects to the remote door.

[0008] A spacer block is further provided between the pressing block and the proximal door or between the remote doors.

[0009] The first bolt is at the same height as the pressing block on the proximal door; the third bolt is at the same height as the pressing block on the remote door.

[0010] Latch handles are respectively arranged on the first bolt and the second bolt.

[0011] A bolt assembly is arranged on the cutter head operation handle. The bolt assembly is located between the cutter head operation handle and the proximal door interlock assembly. The bolt assembly includes a nut and a bolt. The nut is fixed on the side surface of the cutter head operation handle, the bolt is connected in the nut, and the bolt assembly is at the same height as the first bolt.

[0012] The first bolt and the second bolt are arranged at different height positions.

[0013] When the first bolt and the second bolt slide towards the cutter head operation handle, they can pass through the working position after the rotation of the cutter head operation handle.

[0014] The beneficial effect of the present utility model is that: by means of linkage measures, the cutter head operation handle and the maintenance door are associated, so that when operating the cutter head operation handle, the two maintenance doors must be closed; conversely, when any one of the maintenance doors is opened, the cutter head operation handle cannot be operated. Therefore, the safety during the process of tool repair and replacement is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a top view of the safety interlock device described in the present utility model;

[0017] Figure 2 It is a front elevation structural schematic diagram of the proximal door side of the pipe beveller;

[0018] Figure 3 It is a top view of the proximal door side of the pipe beveller;

[0019] Figure 4 It is a front elevation structural schematic diagram of the remote door side of the pipe beveller;

[0020] Figure 5 It is a top view of the distal door side of the pipe beveling machine;

[0021] Figure 6 It is a schematic diagram of the locking state between the proximal door and the first bolt;

[0022] Markings in the figure: 1. Cutter head operation handle, 2. Proximal door, 3. Distal door, 4. Proximal door interlock assembly, 5. Distal door interlock assembly, 6. Frame, 7. First bracket, 8. First chute, 9. First bolt, 10. Pressure block, 11. Hinge, 12. Second bracket, 13. Second chute, 14. Second bolt, 15. Flexible shaft, 16. Flexible shaft card slot, 17. Third bracket, 18. Third chute, 19. Third bolt, 20. Bolt handle, 21. Perforated limit block, 22. Bolt assembly, 23. Cushion block. Specific embodiments

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but it is not used as a basis for any limitation of the invention.

[0024] Embodiment 1: As Figure 1 shown, a safety interlock device for a pipe beveling machine includes a proximal door interlock assembly 4 and a distal door interlock assembly 5. The proximal door interlock assembly 4 is used to realize the linkage between the cutter head operation handle 1 and the proximal door 2, that is, when the proximal door 2 is in the open state, the cutter head operation handle 1 is locked in the operation direction. The distal door interlock assembly 5 is used to realize the linkage between the cutter head operation handle 1 and the distal door 3, that is, when the distal door 3 is in the open state, the cutter head operation handle 1 is locked in the operation direction. Therefore, when operating the cutter head operation handle 1, the proximal door 2 and the distal door 3 must be closed, which improves the safety during the maintenance and tool replacement process. The proximal door 2 and the distal door 3 refer to two maintenance doors on the pipe beveling machine, which are named the proximal door 2 and the distal door 3 respectively according to the distance from the cutter head operation handle 1. The maintenance door adjacent to the cutter head operation handle 1 is the proximal door 2, and the maintenance door far from the cutter head operation handle 1 is called the distal door 3. The side of the pipe beveling machine where the proximal door 2 is provided is the proximal door side, and the side where the distal door 3 is provided is the distal door side. The proximal door side and the distal door side are arranged oppositely.

[0025] As Figure 1As shown, the proximal door interlock assembly 4 is arranged on the proximal door side and is located between the cutter head operation handle 1 and the proximal door 2 on the proximal door side. The distal door interlock assembly 5 is arranged between the cutter head operation handle 1 and the distal door 3. Since the distal door 3 and the cutter head operation handle 1 are on opposite sides of the pipe beveling machine, the distal door interlock assembly 5 includes an operation part and an execution part. The operation part and the proximal door interlock assembly 4 are arranged on the proximal door side where the cutter head operation handle is located, and the execution part is arranged on the opposite distal door side. The operation part controls the action of the execution part through a flexible shaft to lock and unlock the distal door 3.

[0026] As Figure 2 , 3 shown, the proximal door interlock assembly 4 includes a first bracket 7, a first bolt 9 and a pressing block 10. The first bracket 7 is fixed on the frame 6 of the pipe beveling machine. A first sliding groove 8 for the linear sliding of the first bolt 9 is arranged on the first bracket 7. The first sliding groove 8 is formed by two perforated limit blocks 21 respectively fixed at both ends of the first bracket 7. The perforated limit blocks 21 can prevent the first bolt 9 from disengaging from the first sliding groove 8 laterally, and the first bolt 9 can extend out of the first sliding groove 8 through the holes in the perforated limit blocks 21. The pressing block 10 is fixed on the proximal door 2, preferably fixed on the hinge 11, and fixed on the side where the hinge 11 is connected to the proximal door 2. The setting height of the pressing block 10 is the same as the height of the first bolt 9.

[0027] The first bolt 9 has two working positions, namely the proximal door closed position and the handle locked position. The first bolt 9 slides left and right along the first sliding groove 8 to switch between the proximal door closed position and the handle locked position. During the opening and closing process of the proximal door 2, the pressing block 10 will rotate inwards or outwards along with the proximal door 2. Therefore, when the first bolt 9 is in the proximal door closed position, the first bolt 9 will block the path of the outward rotation of the pressing block 10, especially can top on the pressing block 10 to prevent the pressing block 10 from rotating outwards, thereby preventing the opening of the proximal door 2. When the cutter head operation handle 1 controls the cutter head, it needs to rotate outwards, that is, in the direction away from the frame 6. Therefore, when the first bolt 9 is in the handle locked position, the first bolt 9 will block the operation path of the cutter head operation handle 1, preventing the rotation of the cutter head operation handle 1 and making it impossible to control the cutter head.

[0028] By setting the length of the first bolt 9, the first bolt 9 can only block on the pressing block 10 to prevent the proximal door 2 from rotating outward or can only block on the rotation path of the cutter head operation handle 1. Specifically, when the first bolt 9 is in the proximal door closed position, the end of the first bolt 9 adjacent to the cutter head operation handle 1 leaves the operation path of the cutter head operation handle 1, and at this time, the cutter head operation handle 1 can be rotated outward to control the operation of the cutter head. When the first bolt 9 is in the handle locking position, the end of the first bolt 9 adjacent to the proximal door 2 leaves the pressing block 10, and at this time, the proximal door 2 can be opened normally.

[0029] Preferably, a bolt handle 20 is provided on the first bolt 9, which is convenient for the operator to slide the first bolt 9 left and right to lock the closed state of the proximal door 2 or lock the cutter head operation handle 1.

[0030] Continue to refer to Figure 2 、 3 As shown, the operation part of the distal door interlock assembly 5 includes a second bracket 12, a second chute 13 and a second bolt 14. The second bracket 12 is fixed on the frame 6, a second chute 13 is provided on the second bracket 12, and the second bolt 14 is slidably arranged in the second chute 13. The first end of the second bolt 14 can extend out of the end opening of the second chute 13 towards the adjacent cutter head operation handle 1 to block on the operation path of the cutter head operation handle 1 and prevent the rotation of the cutter head operation handle 1. The second end of the second bolt 14 is connected to the first end of the flexible shaft 15, and the second end of the flexible shaft 15 is used to connect to the execution part of the distal door interlock assembly 5 to perform locking and unlocking actions. A flexible shaft card slot 16 is also provided on the second bracket 12, and the housing of the flexible shaft 15 passes through the flexible shaft card slot 16 and is fixed on the second bracket 12.

[0031] To avoid the interference situation where the first bolt 9 and the second bolt 14 "butt heads" when moving towards the cutter head operation handle 1, the height of the second bolt 14 is lower than the height of the first bolt 9. Similarly, the first bolt 9 can also be lower than the second bolt 14.

[0032] As Figure 4 、 5As shown, the execution part of the remote door interlock assembly 5 includes a third bracket 17, a third chute 18, a third bolt 19, and a pressing block 10. The third bracket 17 is arranged on the frame 6 on one side of the remote door 3. A third chute 18 is arranged on the third bracket 17. The third bolt 19 is slidably arranged in the third chute 18. The first end of the third bolt 19 is fixedly connected to the second end of the flexible shaft 15, and the first end of the third bolt 19 faces the direction of the remote door 2. A flexible shaft card slot 16 is also arranged on the third bracket 17, and the housing of the flexible shaft 15 passes through the flexible shaft card slot 16 and is fixed on the third bracket 17. The pressing block 10 is fixed on the remote door 3, preferably fixed on the hinge 11 of the remote door 3 and located on the side of the hinge 11 connecting the remote door 3. The pressing block 10 and the third bolt 19 are at the same height, so that after the third bolt 19 slides towards the remote door 3, it can block the outward rotation path of the pressing block 10, preventing the pressing block 10 from rotating outward, and further preventing the remote door 3 from opening.

[0033] The second bolt 14 and the third bolt 19 in the remote door interlock assembly 5 are connected by a flexible shaft 15 to form an integral moving part with synchronous actions. The length of the integral moving part is set so that the integral moving part can only block the pressing block 10 to prevent the remote door 3 from rotating outward or block the rotation path of the cutter head operation handle 1 to prevent the cutter head operation handle 1 from rotating outward.

[0034] Specifically, the second bolt 14 is used to control the locking and unlocking of the cutter head operation handle 1, and the third bolt 19 is used to control the locking and unlocking of the remote door 3. For this reason, the second bolt 14 has two working positions, namely the handle locking position and the remote door closed position, and the third bolt 19 has two working positions, namely the handle locking position and the remote door closed position. The second bolt 14 and the third bolt 19 are linked between the working positions through the flexible shaft 15. That is, when the second bolt 14 moves to the handle locking position, it can block the rotation of the cutter head operation handle 1, and the movement of the second bolt 14 can also pull the third bolt 19 to move to the handle locking position through the flexible shaft 15, leaving the pressing block. At this time, the remote door 3 can be opened; when the second bolt 14 moves to the remote door closed position, the second bolt 14 leaves the operation path of the cutter head operation handle 1, and the cutter head operation handle 1 can be rotated to control the cutter head to work. At this time, the movement of the second bolt 14 also pushes the third bolt 19 to move to the remote door closed position through the flexible shaft 15, blocking the rotation path of the pressing block 10 and preventing the remote door 3 from opening.

[0035] Further, as Figure 6As shown, taking the proximal door interlock assembly 4 as an example, a spacer block 23 can also be arranged between the pressing block 10 and the hinge 11, and the gap between the pressing block 10 and the first bolt 9 can be adjusted by adjusting the number or thickness of the spacer block 23. Similarly, for the distal door interlock assembly 5, a spacer block 23 can also be arranged to adjust the gap between the pressing block 10 and the third bolt 19.

[0036] Furthermore, by setting the distances between the first sliding groove 8 on the first support 7 and the second sliding groove 13 on the second support 12 and the panel of the frame 6, the sliding paths of the first bolt 9 and the second bolt 14 just pass through the working positions after the rotation of the cutter head operation handle 1, so as to prevent the first bolt 9 or the second bolt 14 from moving towards the cutter head operation handle 1 when the cutter head operation handle 1 is in the working state, ensuring that the proximal door 2 and the distal door 3 are in the locked state and further improving the safety protection performance of the device.

[0037] The working process of the safety interlock device described in this embodiment is as follows: when the pipe beveller is in the normal working state, after manually operating the cutter head operation handle 1 to rotate 15° around the axis and lock it, the cutter head rotates; at this time, the first bolt 9 is in contact with the pressing block 10 on the proximal door 2 on the left side, the second bolt 14 is on the right side, and the third bolt 19 is pushed above the pressing block 10 on the distal door 3 and contacts it through the flexible shaft 15; in addition, the cutter head operation handle 1 in the working state is located on the sliding paths of the first bolt 9 and the second bolt 14, restricting the actions of the first bolt 9 and the second bolt 14. Therefore, in this state, the pressing blocks 10 on the proximal door and the distal door are respectively blocked by the first bolt 9 and the second bolt 14, resulting in the inability to open the door, thus realizing safety protection; when the pipe beveller is in the shutdown state, the cutter head operation handle 1 is reset to the vertical state and no longer restricts the actions of the first bolt 9 and the second bolt 14. At this time, the first bolt 9 is pushed to the right side, the second bolt 14 is pushed to the left side, and the two doors can be opened. At the same time, the first bolt 9 and the second bolt 14 respectively independently restrict the action of the cutter head operation handle 1, making the cutter head unable to rotate, thereby improving the safety during the maintenance and tool replacement process.

[0038] Embodiment 2: This embodiment is a further optimization based on Embodiment 1, and the difference from Embodiment 1 is that as Figure 2 、 3As shown, a bolt assembly 22 is provided on the cutter head operation handle 1 for adjusting the clearance between the cutter head operation handle 1 and the first pin 9. The bolt assembly 22 includes a nut and a bolt connected to the nut. The nut is welded to the cutter head operation handle 1, and the position of the bolt is at the same height as the position of the first pin 9. Due to the first bracket 7, there is a relatively large clearance between the cutter head operation handle 1 and the first pin 9. Therefore, when the first pin 9 is in the handle locking position, the cutter head operation handle 1 can still rotate outward by a certain angle. After the bolt assembly 22 is provided, the bolt can be rotated so that the end of the bolt protrudes from the cutter head operation handle 1, thereby reducing the clearance with the first pin 9, further narrowing the angle of outward rotation of the cutter head operation handle 1, and improving the safety protection ability.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Those of ordinary skill in the art should understand that the specific embodiments of the present invention can be modified or equivalently replaced by referring to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of the claims pending approval.

Claims

1. A safety interlocking device for a pipe beveling machine, characterized in that: It includes a proximal door interlocking assembly, which is arranged on a frame between the proximal door of the pipe beveling machine and the cutter head operating handle, and includes a first bracket, a first latch and a pressure block, wherein the first latch is slidably arranged on the first bracket, and the pressure block is fixed on the proximal door; the length of the first latch is set so that the first latch can only block the pressure block to prevent the proximal door from rotating outward or can only block the rotation path of the cutter head operating handle; The remote door interlocking assembly is arranged on the frame between the remote door and the cutter disc operating handle of the pipe beveling machine, and includes an operating part, an execution part and a flexible shaft. The operating part includes a second bracket and a second latch. The second bracket and the first bracket are respectively located on the opposite sides of the cutter disc operating handle, and the second latch is slidably arranged on the second bracket; the execution part includes a third bracket, a third latch and a pressure block. The third bracket is located on one side of the remote door, the third latch is slidably arranged on the third bracket, and the pressure block is installed on the remote door; the second latch and the third latch are connected with each other through the flexible shaft to form an integral actuating part that acts synchronously; the length of the integral actuating part is set so that the integral actuating part can only block the pressure block to prevent the remote door from rotating outward or block the rotation path of the cutter disc operating handle.

2. The safety interlocking device according to claim 1, characterized in that: The pressing block in the proximal door interlocking assembly is arranged on the hinge of the proximal door and is located at a side where the hinge is connected to the proximal door.

3. The safety interlocking device according to claim 1, characterized in that: The pressing block in the remote door interlocking assembly is arranged on the hinge of the remote door and is located at a side where the hinge is connected to the remote door.

4. The safety interlocking device according to claim 1, characterized in that: A cushion block is also provided between the pressing block and the proximal door or between the distal door.

5. The safety interlocking device according to claim 1, characterized in that: The first latch is at the same height as the pressing block on the proximal door; the third latch is at the same height as the pressing block on the distal door.

6. The safety interlocking device according to claim 1, characterized in that: The first latch and the second latch are respectively provided with latch handles.

7. The safety interlocking device according to claim 1, characterized in that: A bolt assembly is provided on the knife disc operating handle, and the bolt assembly is located between the knife disc operating handle and the proximal door interlock assembly. The bolt assembly includes a nut and a bolt. The nut is fixed on the side of the knife disc operating handle, and the bolt is connected to the nut, and the bolt assembly is at the same height as the first pin.

8. The safety interlocking device according to claim 1, characterized in that: The first latch and the second latch are arranged at different heights.

9. The safety interlocking device according to claim 1, characterized in that: When the first latch and the second latch slide toward the cutter disc operating handle, they can pass through the working position after the cutter disc operating handle is rotated.

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