Oil injection lubrication type valve actuator gear shaft

Abstract

The utility model relates to the field of mechanical parts, and discloses an oil injection lubrication type valve actuator gear shaft which comprises a base, a variable pitch mechanism is arranged at the top end of the base, a mounting block is arranged at the top end of the variable pitch mechanism, the variable pitch mechanism comprises a plurality of connecting blocks, and the connecting blocks are arranged on the mounting block. And telescopic assemblies are arranged in the multiple connecting blocks, the bottom end of the connecting block at the bottommost end is fixedly connected with the top end of the base, sliding grooves are formed in the outer walls of the connecting blocks, moving pipes are arranged outside the connecting blocks, and position control balls are fixedly connected to the inner walls of the moving pipes. According to the utility model, through the arrangement of the pitch changing mechanism, the relative height of the connecting block and the moving pipe can be adjusted, so that the distance between different gears can be adjusted, and a worker can purchase equipment of gears with corresponding diameters and tooth numbers and use the equipment after adjustment, thereby achieving the effect of saving resources.

Description

Technical Field

[0001] The utility model relates to the field of mechanical accessories, in particular to a gear shaft of an oil-injection lubricating valve actuator. Background Art

[0002] The oil-injection lubrication valve actuator is a valve control device specially designed for lubrication systems. It drives the valve to open or close or adjust the valve opening by converting the control signal into mechanical motion, thereby controlling the flow and pressure of the lubricating oil and ensuring the normal operation of the lubrication system.

[0003] The gear shaft plays a key role in transmission, deceleration and torque increase in oil-lubricated valve actuators. It ensures that the power of the motor or pneumatic drive is smoothly and efficiently transmitted to the valve shaft. At the same time, it uses lubricating oil to achieve lubrication, cooling and reduce wear, ensuring precise control and stable operation of the actuator.

[0004] At present, the gear shafts that can be directly purchased on the market are all standard parts with fixed values ​​for height, number of teeth and diameter. However, in actual use, the gear shafts used in some oil-lubricated valve actuators are non-standard parts. When such gear shafts are worn out after a long period of working, it is often difficult to find replacements, which may require the replacement of the entire oil-lubricated valve actuator, resulting in a waste of resources. Therefore, a gear shaft for an oil-lubricated valve actuator is proposed to solve the above problem. Summary of the Invention

[0005] In order to make up for the above shortcomings, the utility model provides an oil-injected lubricated valve actuator gear shaft, which aims to improve the problem in the prior art that it is difficult to find a suitable replacement when the gear shaft of the oil-injected lubricated valve actuator using non-standard gear shafts needs to be replaced.

[0006] The top end of the movable member is fixed with a toothed plate, and the bottom end of the movable member is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate, and the toothed plate is fixed with a toothed plate.

[0007] Preferably, the telescopic assembly includes an outer tube, wherein the outer wall of the outer tube in one group of the telescopic assemblies penetrates and is fixedly connected to the inner wall of the connecting block, the inner wall of the outer tube is slidably connected to the inner tube, and the outer wall of the outer tube in another group of the telescopic assemblies penetrates and is fixedly connected to the inner wall of the movable tube.

[0008] Preferably, the fixing component includes a movable groove, which is opened on the inner wall of the uppermost movable tube, and the inner wall of the movable groove is slidably connected with a clamping block, and the outer wall of the clamping block is elastically connected to the inner wall of the movable groove through a spring, and the end of the clamping block close to the spring is fixedly connected with a pull rope, the top of the pull rope is fixedly connected with a connecting ring, the top of the connecting ring is fixedly connected with a control rope, and the end of the control rope away from the connecting ring is fixedly connected with a pull ring, and the outer wall of the connecting block at the uppermost end is provided with a clamping groove.

[0009] Preferably, the length of the slot in the vertical direction is longer than the height of the block, the number of the slots is set to multiple, and the multiple slots are connected to the arcs corresponding to the outer wall of the block, which are not in the same vertical position area as the slide slot, forming a curve-driven array.

[0010] Preferably, the number of the movable grooves and the blocks are set to be multiple, and the movable grooves and the blocks are arranged in a ring array with a circular ring corresponding to the outer wall of the movable tube, and in the arc area corresponding to the grooves, the total number of the grooves is one less than the number of blocks in the corresponding arc.

[0011] Preferably, the shape of the sliding groove is spiral, and the number of turns of the sliding groove is half a turn, and the sliding groove and the clamping groove are in different vertical areas.

[0012] Preferably, the outer tube inside the movable tube is arranged on the outside of the movable groove, and the movable groove is opened on the lower side of the control ball.

[0013] Preferably, the diameters and the number of turns of the gears outside the plurality of moving tubes are consistent, and the initial positions of the gears outside the plurality of moving tubes are consistent.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, the relative height of the connecting block and the moving tube can be adjusted by arranging the connecting block, the slide groove, the moving tube, the positioning ball, the outer tube, and the inner tube, thereby enabling the distance between different gears to be adjusted. Therefore, when the staff needs to use a non-standardized gear shaft, they only need to purchase equipment corresponding to the gear with the same number of teeth and diameter as the gear shaft, and then adjust its height before use. This also facilitates large-scale production by manufacturers, thereby achieving the effect of saving resources.

[0016] 2. In the utility model, by setting the movable groove, the clamping block, the spring, the pull rope, the connecting ring, the control rope, the pull ring and the clamping groove, it is ensured that after the height adjustment of the connecting block and the movable tube is completed, the connecting block and the movable block can be relatively fixed, thereby preventing the situation in which the gear rotation fails to achieve the expected effect due to poor fixing effect during use, and the total height of the connecting block and the movable tube changes, thereby ensuring stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional schematic diagram of the three-dimensional structure of the overall structure of the present invention;

[0019] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0020] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part A;

[0021] Figure 5 This is a schematic sectional view of the three-dimensional structure of the uppermost moving tube, the connecting block and their internal structure in the present invention;

[0022] Figure 6 This is a schematic sectional view of the three-dimensional structure of the uppermost connecting block, the movable tube and the fixed component in the present invention;

[0023] Figure 7 For this utility model Figure 6 Schematic diagram of the enlarged three-dimensional structure of part B.

[0024] Legend:

[0025] 1. Base; 2. Pitch-changing mechanism; 3. Fixed assembly; 21. Connecting block; 22. Telescopic assembly; 23. Slide; 24. Moving tube; 25. Positioning ball; 221. Outer tube; 222. Inner tube; 31. Movable slot; 32. Block; 33. Spring; 34. Pull rope; 35. Connecting ring; 36. Control rope; 37. Pull ring; 38. Slot; 4. Gear; 5. Mounting block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Reference Figure 1 - Figure 3The utility model provides an embodiment: an oil-injected lubricated valve actuator gear shaft, including a base 1, a pitch-changing mechanism 2 is provided at the top of the base 1, a mounting block 5 is provided at the top of the pitch-changing mechanism 2, and the pitch-changing mechanism 2 includes a connecting block 21. The connecting block 21 is cylindrical in shape, and the number of the connecting blocks 21 is set to multiple. A telescopic component 22 is provided inside the multiple connecting blocks 21. Through the setting of the telescopic component 22, the directions of the multiple connecting blocks 21 are always consistent, that is, when one of the connecting blocks 21 rotates, the other connecting blocks 21 rotate with it, and one of the connecting blocks 21 cannot be rotated relative to the other connecting blocks 21.

[0028] Figure 3 、 Figure 5 and Figure 6 The bottom end of the bottommost connecting block 21 is fixedly connected to the top of the base 1, and a slide groove 23 is provided on the outer wall of the connecting block 21. The shape of the slide groove 23 is spiral. The shape setting of the slide groove 23 ensures that the object inside the slide groove 23 changes its height while changing its direction, and the direction must be changed when the height changes. The number of circles of the slide groove 23 is half a circle. The number of circles of the slide groove 23 is set to ensure that there is an area on the outer wall of the connecting block 21 without a slide groove 23. A moving tube 24 is provided on the outside of the connecting block 21. The shape of the moving tube 24 is annular, and the outer diameter of the inner wall of the moving tube 24 matches the outer diameter of the connecting block 21.

[0029] Reference Figure 2 - Figure 4 The telescopic assembly 22 includes an outer tube 221, wherein the outer wall of the outer tube 221 in one group of telescopic assemblies 22 passes through and is fixedly connected to the inner wall of the connecting block 21, and the inner wall of the outer tube 221 is slidably connected to the inner tube 222. The outer tube 221 is in the shape of a hollow cylinder, and the inner diameter of the openings at the upper and lower ends of the outer tube 221 is smaller than the inner diameter of the middle part. The outer wall of the outer tube 221 in the other group of telescopic assemblies 22 passes through and is fixedly connected to the inner wall of the moving tube 24. The inner wall of the moving tube 24 is fixedly connected to the control ball 25. The control ball 25 The diameter of the chute 23 matches the width of the chute 23. The control ball 25 has no connection with the inner wall of the chute 23. However, because the moving tube 24 is arranged on the outside of the connecting block 21, the control ball 25 cannot leave the chute 23. The control ball 25 is arranged inside the chute 23. The number of moving tubes 24 is consistent with the number of connecting blocks 21. A moving tube 24 is provided on the outside of each connecting block 21. Except for the lowermost connecting block 21, the upper areas of the outer walls of the remaining connecting blocks 21 are rotatably connected to the inner walls of the moving tubes 24 above them.

[0030] Reference Figure 3 、 Figure 5 and Figure 6, the number of telescopic components 22 is set to two groups, and the other group of telescopic components 22 is set inside a plurality of movable tubes 24. Through the setting of the other group of telescopic components 22, it is ensured that the direction of the plurality of movable tubes 24 remains consistent, that is, when one of the movable tubes 24 rotates, the remaining movable tubes 24 will also rotate accordingly, and there will be no situation where one of the movable tubes 24 rotates relative to the other movable tubes 24. The top of the topmost movable tube 24 is fixedly connected to the bottom end of the mounting block 5, and the mounting block 5 is used to connect to the outer shell of the oil-lubricated valve actuator, and the specific connection method is a technology well known to those skilled in the art and can be implemented by those skilled in the art, so it will not be described in detail in this case. A fixing component 3 is set inside the topmost movable tube 24 and the connecting block 21, and the fixing component 3 includes a movable groove 31. The outer tube 221 inside the movable tube 24 is set on the outside of the movable groove 31. The positional relationship between the movable groove 31 and the outer tube 221 inside the movable tube 24 ensures that the installation of the outer tube 221 will not affect the normal use of the movable groove 31.

[0031] Reference Figure 5 - Figure 7 The movable groove 31 is provided on the lower side of the control ball 25. By setting the positional relationship between the movable groove 31 and the control ball 25, it is ensured that the control ball 25 does not affect the opening of the movable groove 31. The movable groove 31 is provided on the inner wall of the uppermost movable tube 24. The inner wall of the movable groove 31 is slidably connected with a clamping block 32. One end of the clamping block 32 close to the inner side of the movable tube 24 is set as a sharp angle. The outer wall of the clamping block 32 is elastically connected to the inner wall of the movable groove 31 by a spring 33. One end of the spring 33 is fixedly connected to the outer wall of the clamping block 32, and the other end of the spring 33 is fixedly connected to the inner wall of the movable groove 31. A drawstring 34 is fixedly connected to one end near the spring 33. The drawstring 34 is inelastic. A connecting ring 35 is fixedly connected to the top of the drawstring 34. The outer wall of the connecting ring 35 is slidably connected to the inner wall of the moving tube 24. The inner wall of the moving tube 24 is provided with an annular groove for the connecting ring 35 to slide. A control rope 36 is fixedly connected to the top of the connecting ring 35. The control rope 36 is inelastic. A draw ring 37 is fixedly connected to the end of the control rope 36 away from the connecting ring 35. The draw ring 37 is annular in shape, and its diameter is larger than the size of the hole provided in the inner wall of the moving tube 24 for the control rope 36 to pass through.

[0032] Reference Figure 5 - Figure 7The outer wall of the uppermost connecting block 21 is provided with a card slot 38. The length of the card slot 38 in the vertical direction is longer than the height of the card block 32. By setting the height, it is ensured that when the card block 32 moves to different heights, there is a card block 32 that can enter the card slot 38. The number of card slots 38 is set to multiple, and the multiple card slots 38 are in the arc corresponding to the outer wall of the connecting block 21, and the arc is not in the same vertical position area as the slide groove 23, forming a curved driven array. The number of movable slots 31 and card blocks 32 are both set to multiple, and the movable slots 31 and card blocks 32 are movable The circular rings corresponding to the outer wall of the tube 24 are in a ring array, and in the arc area corresponding to the slot 38, the total number of the slots 38 is one less than the number of the blocks 32 in the corresponding arc. The inconsistency in number ensures that when the mobile tube 24 and the connecting block 21 rotate very slightly, the mobile tube 24 and the connecting block 21 can be relatively fixed by the change of the blocks 32 entering the slot 38, and it is not easy to cause the minimum height that can be adjusted each time to be too high due to the thickness of the blocks 32 and the slot 38, and the slide groove 23 and the slot 38 are in different vertical areas.

[0033] Reference Figure 1 - Figure 3 The outer wall of the movable tube 24 is fixedly connected with a gear 4. Through the arrangement of multiple gears 4, the whole formed by the combination of multiple gears 4 is in the shape of a gear shaft. The diameter and number of turns of the gears 4 outside the multiple movable tubes 24 are consistent, and the initial positions of the gears 4 outside the multiple movable tubes 24 are consistent.

[0034] Working principle: During use, when the staff needs to adjust the height between the uppermost gear 4 and the lowermost gear 4, the staff first pulls the pull ring 37, so that the pull ring 37 drives the connecting ring 35 to move upward. Since the connecting ring 35 must move upward along the annular groove opened on the inner wall of the moving tube 24 during the upward movement, the connecting ring 35 will not tilt.

[0035] The connecting ring 35 pulls all the pull ropes 34 upwards during the upward movement, so that the pull ropes 34 drive the clamping blocks 32 to move toward the end close to the spring 33 , so that all the clamping blocks 32 leave the clamping slots 38 .

[0036] When the block 32 leaves the slot 38, the staff tightens the pull rope 34 and, under the premise of manually fixing the connecting block 21, moves upward and rotates the uppermost movable tube 24. When the movable tube 24 moves upward, since the movable tube 24 and the control ball 25 are relatively fixed, when the movable tube 24 moves upward, the horizontal position inside the slide groove 23 at the control ball 25 changes synchronously.

[0037] Since the multiple moving tubes 24 are connected by the telescopic assembly 22 , their rotation directions are consistent. Therefore, when the first moving tube 24 rotates relative to the connecting block 21 , the remaining moving tubes 24 also rotate relative to the connecting block 21 .

[0038] Since the height of the control ball 25 changes during the rotation of the moving tube 24 , the height of the moving tube 24 relative to the connecting block 21 in contact with it also changes. Therefore, the overall height of the connecting block 21 and the moving tube 24 changes.

[0039] After adjusting the total length of the connecting block 21 and the movable tube 24 to the required height, the staff releases the pull ring 37. At this time, the spring 33 drives the block 32 to move toward the direction of entering the slot 38. Since the number of blocks 32 and slots 38 is set to multiple, and there is a difference in the number within the same arc range, even if the relative rotation amplitude of the connecting block 21 and the movable tube 24 is small, there is a slot 38 for the block 32 to just enter.

[0040] If there is no matching block 32 and slot 38, the block 32 is set as a pointed end, so that the block 32 in the close position can enter the slot 38 under the push of the inclined surface. Since the mounting block 5 and the base 1 are often fixed to the gear shaft of the oil-lubricated valve actuator using a seal, and there is an error in the seal, the extremely small position difference between the block 32 and the slot 38 can be adjusted by the sealing strength of the seal without affecting the final result.

[0041] When the block 32 enters the interior of the card slot 38, since the connecting block 21 cannot rotate left and right, and the control ball 25 cannot move up and down without rotating, the height adjustment of the uppermost connecting block 21 and the movable tube 24 is completed at this time. Because the rotation of all connecting blocks 21 or all movable tubes 24 is synchronous, when the height adjustment of the uppermost connecting block 21 and the movable tube 24 is completed, the rest are adjusted. At this time, the staff can replace the equipment that has completed the distance adjustment and whose diameter and number of teeth are compatible with the required gear shaft with an oil-lubricated valve actuator, thereby avoiding the situation where the entire oil-lubricated valve actuator is replaced when the non-standard gear shaft is damaged, thereby achieving the effect of saving resources.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gear shaft of an oil-injection lubricated valve actuator, comprising a base (1), characterized in that: The top of the base (1) is provided with a pitch-changing mechanism (2), the top of the pitch-changing mechanism (2) is provided with a mounting block (5), the pitch-changing mechanism (2) comprises a connecting block (21), the number of the connecting blocks (21) is set to be multiple, the interiors of the multiple connecting blocks (21) are provided with telescopic components (22), the bottom end of the bottommost connecting block (21) is fixedly connected to the top of the base (1), the outer wall of the connecting block (21) is provided with a sliding groove (23), the outside of the connecting block (21) is provided with a moving tube (24), the inner wall of the moving tube (24) is fixed A control ball (25) is connected, and the control ball (25) is arranged inside the slide groove (23). The number of the moving tubes (24) is consistent with the number of the connecting blocks (21). The number of the telescopic components (22) is set to two groups, and the other group of telescopic components (22) is arranged inside a plurality of moving tubes (24). The top end of the topmost moving tube (24) is fixedly connected to the bottom end of the mounting block (5). A fixing component (3) is arranged inside the topmost moving tube (24) and the connecting block (21), and a gear (4) is fixedly connected to the outer wall of the moving tube (24).

2. The gear shaft of an oil-injection lubricated valve actuator according to claim 1, characterized in that: The telescopic assembly (22) comprises an outer tube (221), wherein the outer wall of the outer tube (221) in one group of the telescopic assemblies (22) penetrates and is fixedly connected to the inner wall of the connecting block (21), and the inner wall of the outer tube (221) is slidably connected to the inner tube (222), and the outer wall of the outer tube (221) in another group of the telescopic assemblies (22) penetrates and is fixedly connected to the inner wall of the moving tube (24).

3. The gear shaft of an oil-injection lubricated valve actuator according to claim 2, characterized in that: The fixing assembly (3) includes a movable groove (31), the movable groove (31) is provided on the inner wall of the uppermost movable tube (24), the inner wall of the movable groove (31) is slidably connected to a clamping block (32), the outer wall of the clamping block (32) is elastically connected to the inner wall of the movable groove (31) via a spring (33), the end of the clamping block (32) close to the spring (33) is fixedly connected to a pull rope (34), the top end of the pull rope (34) is fixedly connected to a connecting ring (35), the top end of the connecting ring (35) is fixedly connected to a control rope (36), the end of the control rope (36) away from the connecting ring (35) is fixedly connected to a pull ring (37), and a clamping groove (38) is provided on the outer wall of the uppermost connecting block (21).

4. The gear shaft of an oil-injection lubricated valve actuator according to claim 3, characterized in that: The length of the card slot (38) in the vertical direction is longer than the height of the card block (32), the number of the card slots (38) is set to be multiple, and the multiple card slots (38) are connected to the arc of the outer wall of the block (21) and are not in the same vertical position area as the slide groove (23), forming a curved driven array.

5. The gear shaft of an oil-injection lubricated valve actuator according to claim 3, characterized in that: The number of the movable grooves (31) and the clamping blocks (32) is set to be multiple, and the movable grooves (31) and the clamping blocks (32) are arranged in a ring array with a circular ring corresponding to the outer wall of the movable tube (24), and in the arc area corresponding to the clamping grooves (38), the total number of the clamping grooves (38) is one less than the number of the clamping blocks (32) in the corresponding arc.

6. The gear shaft of an oil-injection lubricated valve actuator according to claim 3, characterized in that: The shape of the chute (23) is spiral, and the number of turns of the chute (23) is half a turn. The chute (23) and the clamping groove (38) are in different vertical areas.

7. The gear shaft of an oil-injection lubricated valve actuator according to claim 3, characterized in that: The outer tube (221) inside the movable tube (24) is arranged outside the movable groove (31), and the movable groove (31) is opened on the lower side of the control ball (25).

8. The gear shaft of an oil-injection lubricated valve actuator according to claim 1, characterized in that: The diameters and the number of turns of the gears (4) outside the plurality of movable tubes (24) are consistent, and the initial positions of the gears (4) outside the plurality of movable tubes (24) are consistent.

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