Nut screwing device suitable for high-temperature equipment facility

Abstract

The invention relates to the technical field of chemical engineering, smelting and glass manufacturing, aims to solve the problems that in the prior art, when a worker wears high-temperature-resistant gloves to conduct screwing operation on high-temperature equipment and facilities, operation is inconvenient and inflexible, the probability of completing operation at a time is low, and the working efficiency is low, and provides a nut screwing device suitable for the high-temperature equipment and facilities. Comprising a sleeve and a connecting rod, the connecting rod is sleeved with the sleeve, the sleeve can slide in the axial direction of the connecting rod, and the connecting rod can rotate in the sleeve; a limiting block is arranged at one end of the connecting rod, an external thread is further arranged at the end of the connecting rod, the external thread is arranged between the end face of the end of the connecting rod and the limiting block and used for being connected with a to-be-screwed nut, and one part of the to-be-screwed nut can be connected to the end of the connecting rod through the thread and abuts against the limiting block; one end of the sleeve is connected with a shifting fork, the shifting fork is used for clamping and fixing a nut to be screwed, and the shifting fork can move away from the outer side of the installation position of the nut to be screwed along with movement of the sleeve and can also move to the outer side of the nut to be screwed to fix the nut to be screwed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical industry, smelting and glass manufacturing, in particular to a nut threading device suitable for high-temperature equipment and facilities. BACKGROUND

[0002] In modern industrial equipment and facilities, it is very common to use threaded connection for connection and fastening. The nut threading operation usually includes: keeping the end face of the inner hole of the nut parallel to the end face of the screw rod, keeping the center of the end face of the nut concentric with the center of the end face of the screw rod, and tightly attaching the end face of the nut to the end face of the screw rod, then rotating the nut, the screw rod and the nut are engaged, the nut threading operation is completed, and the workpiece between the root of the screw rod and the nut is tightly attached together and generates enough friction to achieve the effect of connection and fastening.

[0003] The above nut threading operation is suitable for most cases. For high-temperature equipment and facilities in the technical field of chemical industry, smelting and glass manufacturing, the nut threading operation needs to be completed with the help of high-temperature resistant gloves. Since the high-temperature resistant gloves are heavy, not flexible and inconvenient to operate, and their high-temperature resistant principle is to slow down heat transfer time, the nut threading operation needs to be completed in a short time. This is very difficult for the operator in a high-temperature environment, and the probability of one-time completion of the operation is very low. Usually, it needs to be tried many times to complete the operation.

[0004] Therefore, the nut threading operation of high-temperature equipment and facilities in the prior art has the following disadvantages: the probability of one-time completion of the operation is very low, the work efficiency is low, the operator is exposed to a high-temperature environment for a long time, the high temperature of the working environment affects the health of the operator, the safety risk is high, and the safety management cost is high. SUMMARY

[0005] The present application aims to provide a nut threading device suitable for high-temperature equipment and facilities to solve the problems that the operator is inconvenient and inflexible when wearing high-temperature resistant gloves to thread the high-temperature equipment and facilities, resulting in low probability of one-time completion of the operation, low work efficiency, long exposure of the operator to a high-temperature environment, great impact on the health of the operator, high safety risk and high safety management cost.

[0006] The present application is implemented by using the following technical solutions: The present application provides a nut threading device suitable for high-temperature equipment and facilities, which comprises a sleeve and a connecting rod. The sleeve is sleeved on the outside of the connecting rod, the sleeve can slide along the axial direction of the connecting rod, and the connecting rod can rotate in the sleeve. One end of the connecting rod is provided with a limiting block, and the end of the connecting rod is also provided with an external thread, which is arranged between the end face of the end of the connecting rod and the limiting block, and is used for connecting a nut to be threaded. One end of the sleeve is connected with a shift fork, which is used for clamping and fixing the nut to be threaded, and the shift fork can be moved away from the outside of the mounting position of the nut to be threaded on the connecting rod, and can also be moved to the outside of the nut to be threaded to fix it.

[0007] The shift fork can be moved away from the outside of the mounting position of the nut to be threaded, on the one hand, facilitating the threaded connection of the nut to be threaded on the end of the connecting rod, and on the other hand, during the threading operation, the nut to be threaded can rotate with the connecting rod, and rotating the connecting rod can make the thread of the nut to be threaded engage with the thread of the screw rod, so that the nut to be threaded is screwed on the screw rod.

[0008] With the above structure, during use, first, the operator slides the sleeve to the other end of the connecting rod and keeps it, so that the shift fork moves away from the outside of the mounting position of the nut to be threaded on the connecting rod, and the mounting space is left for the nut to be threaded; Then, the nut to be threaded is connected by threads on one end of the connecting rod, at this time, a part of the nut to be threaded is connected by threads with the connecting rod, and abuts against the limiting block, and the other part of the nut to be threaded is located outside the connecting rod; Then, the operator holds the combination of the nut threading device and the nut to be threaded, keeps the inner hole end face of the nut to be threaded parallel to the end face of the screw rod of the high-temperature equipment, and keeps the center of the end face of the nut to be threaded concentric with the center of the end face of the screw rod, and keeps the end face of the nut to be threaded close to the end face of the screw rod; Next, the operator rotates the connecting rod to make the thread of the nut to be threaded engage with the thread of the screw rod, so that the part of the nut to be threaded outside the connecting rod is connected by threads with the screw rod, and the rotating direction of the connecting rod is the direction of screwing the nut to be threaded on the connecting rod. Since the limiting block abuts against the nut to be threaded, the limiting block limits the nut to be threaded, so at this time the nut to be threaded is equivalent to being fixed on the connecting rod, and rotating the connecting rod can screw the nut to be threaded on the screw rod. Since the shift fork has been moved away from the outside of the mounting position of the nut to be threaded at this time, the shift fork will not clamp the nut to be threaded, and the nut to be threaded can rotate with the rotating connecting rod to screw on the screw rod; Finally, the operator slides the sleeve so that the sleeve slides to one end of the connecting rod provided with the limiting block, the limiting block does not interfere with the shift fork during the sliding process, the shift fork is moved to the outside of the nut to be threaded, the nut to be threaded is clamped, the sleeve is kept, and the nut to be threaded is fixed; then the operator reversely rotates the connecting rod (the rotating direction of the connecting rod is the direction of rotating the nut to be threaded out of the connecting rod), so that the connecting rod and the nut to be threaded gradually separate, until the connecting rod and the nut to be threaded are completely separated, and the threading operation is completed.

[0009] The nut threading device can make the operator thread the nut onto the corresponding screw rod at a long distance, avoid direct contact of the operator with high-temperature equipment and facilities, reduce the influence of high temperature on the operator's body, and make the operator operate without wearing high-temperature gloves during the whole operation process, so that the threading operation is more flexible, accurate and fast, the probability of one-time operation is improved, the work efficiency is improved, the time of the operator exposed to the high-temperature environment is reduced, the personnel's physical health is protected, the safety risk and safety management cost are reduced, and the problems in the prior art, such as difficult nut threading during installation and maintenance of high-temperature equipment and facilities, great safety risk, high safety management cost, high temperature of the working environment affecting the personnel's physical health, great labor intensity and low operation efficiency, are solved.

[0010] As a preferred technical solution: The sleeve is arranged concentrically with the connecting rod, and the shift fork is arranged concentrically with the sleeve.

[0011] As a preferred technical solution: The other end of the connecting rod is connected with a handle.

[0012] The handle drives the connecting rod to rotate.

[0013] As a preferred technical solution: The connecting rod is connected with the handle through threads.

[0014] As a preferred technical solution: The other end of the connecting rod is provided with external threads, a hole is formed in one end face of the handle, internal threads are arranged in the hole, the other end of the connecting rod is inserted into the hole in the end face of the handle, and the connecting rod is connected with the handle through threads.

[0015] As a preferred technical solution: The limiting block is fixedly connected with the connecting rod, or the limiting block is integrally formed with the connecting rod.

[0016] As a preferred technical solution: The limiting block can adopt a nut, the connecting rod can adopt a screw rod, and the limiting block is connected with the connecting rod through threads.

[0017] As a preferred technical solution: The limiting block is not limited to being fixed on the connecting rod in the above manner.

[0018] As a preferred technical solution: The shifting fork comprises at least two blocks, one end of the blocks being fixedly connected to one end of the sleeve, all the blocks cooperating with the outer side of the nut to be threaded to clamp the nut.

[0019] As a preferred technical solution: Each block is installed axially along the sleeve.

[0020] As a preferred technical solution: One end of the sleeve is provided with a flange, the flange being fixedly connected to the sleeve, and one end of the block being fixedly connected to the flange.

[0021] As a preferred technical solution: When the blocks are two, the two blocks are parallel to each other and symmetrically arranged on the flange, and the two blocks can move to both sides of the nut to be threaded along with the sleeve to clamp and fix the nut.

[0022] As a preferred technical solution: The number of blocks is not limited to two, and a plurality of blocks can cooperate with a plurality of surfaces of the nut to be threaded to clamp the nut, thereby achieving better fixing effect, for example, six blocks.

[0023] As a preferred technical solution: The shifting fork is not limited to the form of blocks to fix the nut to be threaded, and can also adopt a whole structure, for example, a hexagonal cylinder, the cross-sectional shape of which is adapted to the nut to be threaded, so as to clamp and fix the nut.

[0024] As a preferred technical solution: The two blocks are respectively located at both ends of the radial diameter of the flange.

[0025] As a preferred technical solution: The outer diameter of the limiting block is smaller than the distance between the two blocks.

[0026] Since the sleeve can slide axially along the connecting rod, when the sleeve slides towards one end of the connecting rod provided with the limiting block, the two blocks move to both sides of the nut to be threaded to clamp the nut, the limiting block is located between the two blocks and does not interfere with the blocks.

[0027] In summary, by adopting the technical scheme, the application has the following beneficial effects: The nut threading device can make the operator thread the nut onto the corresponding screw rod at a long distance, avoid direct contact of the operator with high-temperature equipment and facilities, reduce the influence of high temperature on the operator's body, and make the operator operate without wearing high-temperature gloves during the whole operation process, so that the nut threading operation is more flexible, accurate and fast, the one-time operation probability is improved, the work efficiency is improved, the time of the operator exposed to the high-temperature environment is reduced, the personnel's physical health is protected, the safety risk and safety management cost are reduced, and the problems of difficult nut threading, great safety risk, high safety management cost, high temperature of the working environment affecting the personnel's physical health, great labor intensity and low operation efficiency in the installation and maintenance process of the high-temperature equipment and facilities in the prior art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure diagram of the nut threading device suitable for high-temperature equipment and facilities according to the application; Figure 2 A sectional view of the A-A direction in Figure 1 Figure 3 A front view of the connecting rod according to the application; Figure 4 A left side view of the connecting rod according to the application; Figure 5 A front view of the handle according to the application; Figure 6 A sectional view of the A-A direction in Figure 5 Figure 7 A left side view of the handle according to the application; Figure 8 A right side view of the handle according to the application; Figure 9 A front view of the sleeve and the fork according to the application; Figure 10 A sectional view of the A-A direction in Figure 9 Figure 11 A left side view of Figure 9

[0029] Figure legend: 1-sleeve, 2-connecting rod, 3-handle, 4-handle A end, 5-limiting block, 6-fork, 7-nut to be threaded, 8-sleeve A end, 9-sleeve B end, 10-connecting rod A end, 11-second external thread, 12-first external thread, 13-connecting rod B end, 14-internal thread, 15-stop block, 16-flange. DETAILED DESCRIPTION

[0030] ​​​​To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1 like Figures 1-11 As shown, this embodiment proposes a nut threading device suitable for high-temperature equipment and facilities, including a sleeve 1 and a connecting rod 2. The sleeve 1 is sleeved on the outside of the connecting rod 2. The sleeve 1 can slide along the axial direction of the connecting rod 2. The connecting rod 2 can rotate in the sleeve 1 along the axis of the connecting rod 2. The connecting rod 2 can rotate in both directions.

[0032] The two ends of the sleeve 1 are sleeve A end 8 and sleeve B end 9, respectively, and a fork 6 is fixedly connected to sleeve A end 8.

[0033] Preferably, the sleeve 1 and the connecting rod 2 are arranged concentrically, and the shift fork 6 is arranged concentrically with the sleeve 1.

[0034] The sleeve A end 8 is provided with a flange 16, which is located at the end of the sleeve 1 and is fixedly connected to the sleeve 1. The fork 6 is fixedly connected to the flange 16.

[0035] The shift fork 6 includes two stops 15. One end of each stop 15 is fixedly connected to the flange 16. The two stops 15 are parallel to each other and symmetrically arranged on the flange 16. The two stops 15 can move with the sleeve 1 to both sides of the nut 7 to be threaded, thereby locking the nut 7 and fixing it.

[0036] The nut 7 to be threaded is not part of the nut threading device of the present invention, but is a demonstration component of this embodiment. The nut 7 to be threaded can be installed onto the screw of high-temperature equipment using the nut threading device of the present invention.

[0037] Preferably, the two stops 15 are located at both ends of the radial diameter of the flange 16, and each stop 15 is installed along the axial direction of the sleeve 1.

[0038] Preferably, the sleeve 1 is a stainless steel tube with an inner diameter of φ10mm, an outer diameter of φ18mm, and a length of 269mm; The flange 16 is a stainless steel ring with an inner diameter of φ10mm, an outer diameter of φ23.4mm and a length of 3mm. The flange 16 can be fixed with the sleeve 1 by welding or can be integrally formed with the sleeve 1. The stopper 15 is a stainless steel plate with a length of 22.5mm, a width of 7mm and a thickness of 3mm. The stopper 15 can be fixed with the flange 16 by welding.

[0039] The two ends of the connecting rod 2 are the connecting rod A end 10 and the connecting rod B end 13. The connecting rod B end 13 penetrates into the sleeve 1 from the sleeve A end 8 and penetrates out of the sleeve B end 9. The connecting rod B end 13 is fixedly connected with the handle 3.

[0040] The two ends of the handle 3 are the handle A end 4 and the handle B end. The connecting rod B end 13 is fixedly connected with the handle A end 4.

[0041] Preferably, a hole is formed on the end face of the handle A end 4. An internal thread 14 is arranged in the hole. A first external thread 12 is arranged on the connecting rod B end 13. The connecting rod B end 13 is inserted into the hole on the end face of the handle A end 4. The connecting rod 2 is connected with the handle 3 by threads. A regular hexagonal hole with a depth of 5mm and a side length of 4.62mm is arranged on the end face of the handle B end. An 8mm internal hexagonal wrench can be used to install or disassemble the handle 3. After the handle 3 is fixed with the connecting rod 2, the handle 3 can be rotated to drive the connecting rod 2 to rotate. The handle 3 and the connecting rod 2 can be fixed together by other ways, such as welding.

[0042] The sleeve A end 8, the sleeve B end 9, the connecting rod A end 10, the connecting rod B end 13, the handle A end 4 and the handle B end are all used to distinguish the assembly direction and are not independent components.

[0043] A limiting block 5 is arranged on the connecting rod A end 10. The limiting block 5 is used to abut against the end face of the nut 7 to be threaded to connect the nut 7 to be threaded to the screw rod of the high-temperature equipment.

[0044] Preferably, the outer diameter of the limiting block 5 is greater than the outer diameter of the connecting rod 2, so that the limiting block 5 can abut against the end face of the nut 7 to be threaded.

[0045] Preferably, the limiting block 5 is fixedly connected with the connecting rod 2, which can be fixed by welding, threaded connection or the like. The limiting block 5 can be integrally formed with the connecting rod 2.

[0046] The outer diameter of the limiting block 5 is smaller than the distance between the two stop blocks 15. Since the sleeve 1 can slide along the axial direction of the connecting rod 2, when the sleeve 1 slides towards the connecting rod A end 10, the two stop blocks 15 respectively move to the two sides of the to-be-threaded nut 7 to clamp the to-be-threaded nut 7, the limiting block 5 is located between the two stop blocks 15 and does not interfere with the stop blocks 15.

[0047] The connecting rod A end 10 is provided with a second external thread 11, which is arranged between the limiting block 5 and the end face of the connecting rod A end 10. The second external thread 11 is used to connect with the to-be-threaded nut 7. A part of the to-be-threaded nut 7 is connected with the second external thread 11, and the end face of the to-be-threaded nut 7 abuts against the limiting block 5. The other part of the to-be-threaded nut 7 is located outside the connecting rod 2.

[0048] Preferably, only three turns of the second external thread 11 are arranged on the connecting rod A end 10.

[0049] Preferably, the connecting rod 2 can be directly used as a screw rod, and the limiting block 5 can be used as a nut. The limiting block 5 is connected with the screw rod through threads, and three turns of the second external thread 11 are left between the limiting block 5 and the end face of the connecting rod A end 10.

[0050] In use, first, the operator slides the sleeve 1 to make the sleeve B end 9 slide to the handle A end 4 and keep it, at this time, the stop blocks 15 move away from the two sides of the connecting rod A end 10 and the limiting block 5 to make installation space for the to-be-threaded nut 7; Then, the to-be-threaded nut 7 is connected with the connecting rod A end 10 through threads, and one end of the to-be-threaded nut 7 abuts against the limiting block 5. At this time, a part of the to-be-threaded nut 7 is connected with the second external thread 11, and the other part of the to-be-threaded nut 7 is located outside the connecting rod 2. Then, the operator holds the combination of the nut threading device and the to-be-threaded nut 7, specifically at the handle 3, keeps the inner hole end face of the to-be-threaded nut 7 parallel to the end face of the screw rod of the high-temperature equipment and facility, keeps the center of the end face of the to-be-threaded nut 7 concentric with the center of the end face of the screw rod, and keeps the end face of the to-be-threaded nut 7 close to the end face of the screw rod. Then, the operator rotates the handle 3 to make the thread of the nut 7 to be threaded engage with the thread of the screw rod, and the part of the nut 7 to be threaded outside the connecting rod 2 is connected with the screw rod through the thread; the rotating direction of the handle 3 is the direction of rotating the nut 7 to be threaded on the connecting rod 2, and the limiting block 5 limits the nut 7 to be threaded, so that the nut 7 to be threaded is equivalent to being fixed on the connecting rod 2, and the handle 3 can rotate the nut 7 to be threaded on the screw rod; since the stop block 15 has moved away from the two sides of the connecting rod A end 10 and the limiting block 5, the stop block 15 will not block the nut 7 to be threaded, and the nut 7 to be threaded can rotate with the handle 3 to rotate on the screw rod; Finally, the operator slides the sleeve 1 to make the sleeve A end 8 slide to the connecting rod A end 10, and the two stop blocks 15 move to the upper and lower sides of the nut 7 to be threaded with the sleeve 1 respectively, the two stop blocks 15 block the nut 7 to be threaded, hold the sleeve 1, and fix the nut 7 to be threaded, at this time, the limiting block 5 is located between the two stop blocks 15, and the end surface of the stop block 15 is flush with the end surface of the nut 7 to be threaded; then the operator reversely rotates the handle 3 (the rotating direction of the handle 3 is the direction of rotating the nut 7 to be threaded out of the connecting rod 2), so that the connecting rod 2 and the nut 7 to be threaded are gradually separated, until the connecting rod 2 and the nut 7 to be threaded are completely separated, and the threading operation is completed.

[0051] The nut threading device of the present application only needs to thread the nut 7 to be threaded on the corresponding screw rod, and does not include tightening or tightening to a specified torque value, and subsequent operations can be realized by other tools.

[0052] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nut threading device suitable for high-temperature equipment and facilities, characterized in that: It includes a sleeve and a connecting rod. The sleeve is fitted over the outside of the connecting rod and can slide along the axial direction of the connecting rod. The connecting rod can rotate within the sleeve. One end of the connecting rod is provided with a limit block, and the same end of the connecting rod is also provided with an external thread. The external thread is provided between the end face of the connecting rod and the limit block. The external thread is used for connecting a nut to be threaded. A part of the nut to be threaded can be connected to the end of the connecting rod by the thread and abut against the limit block. One end of the sleeve is connected to a fork, which is used to hold the nut to be threaded in place and fix it in place. The fork can move away from the outside of the installation position of the nut to be threaded on the connecting rod as the sleeve moves, or it can move to the outside of the nut to be threaded and fix it in place.

2. The nut threading device for high-temperature equipment and facilities according to claim 1, characterized in that: The sleeve is arranged concentrically with the connecting rod, and the shift fork is arranged concentrically with the sleeve.

3. The nut threading device for high-temperature equipment and facilities according to claim 1, characterized in that: The other end of the linkage is connected to a handle.

4. The nut threading device for high-temperature equipment and facilities according to claim 3, characterized in that: The connecting rod is connected to the handle via a thread.

5. The nut threading device for high-temperature equipment and facilities according to claim 1, characterized in that: The limiting block is fixedly connected to the connecting rod, or the limiting block and the connecting rod are integrally formed.

6. The nut threading device for high-temperature equipment and facilities according to claim 1, characterized in that: The shift fork includes at least two stops, one end of which is fixedly connected to one end of the sleeve. All the stops cooperate with the outer surface of the nut to be threaded, thus locking the nut in place.

7. The nut threading device for high-temperature equipment and facilities according to claim 6, characterized in that: One end of the sleeve is provided with a flange, the flange is fixedly connected to the sleeve, and one end of the stop block is fixedly connected to the flange.

8. The nut threading device for high-temperature equipment and facilities according to claim 7, characterized in that: When there are two stops, the two stops are parallel to each other and symmetrically arranged on the flange. The two stops can move with the sleeve to both sides of the nut to be threaded, and lock the nut to be threaded to fix it.

9. The nut threading device for high-temperature equipment and facilities according to claim 8, characterized in that: The two stops are located at both ends of the radial diameter of the flange.

10. The nut threading device for high-temperature equipment and facilities according to claim 8, characterized in that: The outer diameter of the limiting block is smaller than the distance between the two stops.

Images