Transmission shaft adjusting and positioning device

Abstract

The utility model provides a transmission shaft adjusting and positioning device which comprises a fixing block, a stroke positioning sleeve and a fixing assembly, the stroke positioning sleeve and the fixing assembly are used for being arranged on a transmission shaft in a sleeved mode, and the fixing block is arranged outside the stroke positioning sleeve in a sleeved mode and used for being fixedly installed with an external workpiece. The device has the advantages that the relative axial position of the stroke positioning sleeve and the transmission shaft can be fixed through the fixing assembly, so that the stroke positioning sleeve can drive the transmission shaft to move, adjust and position relative to the fixing block in the axial direction, and relative rotation of the stroke positioning sleeve and the transmission shaft is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas compressor maintenance equipment, in particular to a transmission shaft adjustment and positioning device. Background Art

[0002] In the later stage of natural gas production, the supercharger is mainly used for extraction. The supercharger is the key equipment for the supercharger process. The cylinder head pores of the supercharger are prone to carbon deposition, which makes the pores and valves not tightly sealed, and the combustion chamber leaks, often causing the supercharger to malfunction and shut down. Therefore, regular cleaning of the cylinder head of the supercharger is a key factor in ensuring stable production.

[0003] When using cleaning tools to clean carbon deposits on the cylinder head valves of superchargers, the rotating brush head workpiece needs to be positioned at different axial positions for cleaning. Traditional tools can only be positioned manually, with poor accuracy and controllability, resulting in an unstable cleaning surface of the brush head and poor cleaning effect. At the same time, manual positioning causes the transmission shaft to shake, so positioning parts need to be set to ensure that the transmission shaft rotates stably along the axis and smoothly transmits the rotation from the power part to the brush head.

[0004] The adjustment and positioning devices for the drive shaft in the prior art are mainly designed to ensure stable installation of the drive shaft. For example, the Chinese utility model patent with publication number CN205111215U involves an axial position adjustment device for the drive shaft, which is used to achieve precise positioning of the drive shaft during the installation and positioning process, thereby avoiding mechanical damage caused by inconsistency between the installation dimensions and the working dimensions. This is obviously not applicable to the above-mentioned technical problem.

[0005] Therefore, it is necessary to study a transmission shaft adjustment and positioning device to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0006] The utility model provides a transmission shaft adjustment and positioning device, which can fix the relative axial position of the stroke positioning sleeve and the transmission shaft through a fixing component, so that the stroke positioning sleeve can drive the transmission shaft to move, adjust and position along its axial direction relative to the fixing block without affecting the relative rotation of the stroke positioning sleeve and the transmission shaft, and can effectively alleviate or solve the above-mentioned technical problems.

[0007] The transmission shaft adjustment and positioning device of the utility model may include a fixing block, a travel positioning sleeve and a fixing assembly, both of which are used to be sleeved on the transmission shaft, and the fixing block is sleeved outside the travel positioning sleeve to be fixedly installed with an external workpiece;

[0008] The fixing assembly can fix the relative axial position of the travel positioning sleeve and the transmission shaft, the travel positioning sleeve can drive the transmission shaft to move, adjust and position along its axial direction relative to the fixing block, and the travel positioning sleeve can rotate circumferentially relative to the transmission shaft.

[0009] In one embodiment, the fixed block is provided with a penetrating central threaded hole, and the outer surface of the stroke locating sleeve is provided with an external thread matching the central threaded hole. The stroke locating sleeve is spirally rotated relative to the fixed block to achieve movement, adjustment and positioning of the stroke locating sleeve relative to the fixed block along its axial direction.

[0010] In one embodiment, the adjustment and positioning device further comprises an adjustment bracelet for being sleeved on the transmission shaft, wherein the adjustment bracelet is fixed to the stroke positioning sleeve and is used to drive the stroke positioning sleeve to rotate spirally.

[0011] In one embodiment, the adjustment bracelet and the travel positioning sleeve are fixed by a key connection or a pin connection.

[0012] In one embodiment, the adjustment bracelet is sleeved on the axial extension portion of the upper end of the travel positioning sleeve, the outer ring of the axial extension portion is an irregular circular structure, and the center of the adjustment bracelet is provided with a central mounting hole matching the outer ring structure of the axial extension portion, so that the adjustment bracelet is circumferentially fixed to the travel positioning sleeve.

[0013] In one embodiment, the fixing assembly includes two fixing sleeves respectively located at two ends of the travel positioning sleeve, and the fixing sleeves can be locked with the transmission shaft so that the travel positioning sleeve and the transmission shaft are axially fixed relative to each other.

[0014] In one embodiment, a bearing is provided between the fixed sleeve and the travel positioning sleeve, so that the travel positioning sleeve can rotate circumferentially relative to the fixed sleeve.

[0015] In one embodiment, the bearing is provided with two protective covers at both ends along the axial direction, and the two protective covers are in planar contact with the corresponding fixed sleeve or the stroke locating sleeve in the axial direction. The two protective covers are in rolling contact with each other through balls, so that the stroke locating sleeve can rotate circumferentially relative to the fixed sleeve.

[0016] In one embodiment, the fixed sleeve is in smooth contact with the travel positioning sleeve, so that the travel positioning sleeve can rotate circumferentially relative to the fixed sleeve.

[0017] In one embodiment, the fixing sleeve is provided with a through hole which penetrates radially, and the through hole cooperates with a fastener to lock the fixing sleeve and the transmission shaft.

[0018] The transmission shaft adjustment and positioning device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0019] The drive shaft adjustment and positioning device of the utility model can fix the relative axial position of the travel positioning sleeve and the drive shaft through the fixing assembly, so that the travel positioning sleeve can drive the drive shaft to move, adjust and position along its axial direction relative to the fixing block without affecting the relative rotation of the travel positioning sleeve and the drive shaft. In this way, the adjustment and positioning device is applied to the cleaning tool, and the brush head can be adjusted and positioned at different axial positions for positioning and cleaning, and the rotation and force transmission of the drive shaft to the brush head can be not affected, which can improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of the adjusting and positioning device of an embodiment of the utility model;

[0022] Figure 2 It is an exploded view of the three-dimensional structure of the adjusting and positioning device of the embodiment of the utility model.

[0023] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0024] Reference numerals:

[0025] 1-fixed block, 2-travel positioning sleeve, 201-axial extension, 3-transmission shaft, 4-adjusting bracelet, 401-center mounting hole, 5-fixed sleeve, 501-fastener, 6-bearing, 601-protective cover, 602-ball. DETAILED DESCRIPTION

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] like Figure 1 to Figure 2 As shown, the transmission shaft adjustment and positioning device of the utility model may include a fixing block 1, a travel positioning sleeve 2 and a fixing assembly, both of which are used to be sleeved on the transmission shaft 3, and the fixing block 1 is sleeved outside the travel positioning sleeve 2 to be fixedly installed with an external workpiece;

[0028] The fixing assembly can fix the relative axial position of the travel positioning sleeve 2 and the transmission shaft 3. The travel positioning sleeve 2 can drive the transmission shaft 3 to move, adjust and position along its axial direction relative to the fixing block 1, and the travel positioning sleeve 2 can rotate relative to the transmission shaft 3 in the circumferential direction.

[0029] Specifically, the fixed block 1 is used to be fixedly installed with an external workpiece to provide support for the adjustment and positioning device as a whole, and the fixed block 1 is sleeved outside the stroke positioning sleeve 2 to cooperate with the stroke positioning sleeve 2 to achieve axial adjustment and positioning. The fixed assembly is fixed to the transmission shaft 3 to fix the relative axial position of the stroke positioning sleeve 2 and the transmission shaft 3, so that when the stroke positioning sleeve 2 is axially moved, adjusted and positioned relative to the fixed block 1, the stroke positioning sleeve 2 can drive the transmission shaft 3 to move, adjust and position relative to the fixed block 1 along its axial direction, that is, to achieve axial adjustment and positioning of the transmission shaft 3. In addition, the stroke positioning sleeve 2 can rotate relative to the transmission shaft 3 in the circumferential direction, that is, the relative rotation of the stroke positioning sleeve 2 and the transmission shaft 3 is not affected, which facilitates the transmission shaft 3 to rotate and transmit force to the brush head.

[0030] It should be noted that the stroke locating sleeve 2 is sleeved on the transmission shaft 3 through the center hole opened axially thereof, and the diameter of the center hole matches the outer diameter of the transmission shaft 3, so that the stroke locating sleeve 2 can radially position the transmission shaft 3 to prevent it from radial swinging. At the same time, the inner wall of the center hole and the outer wall of the transmission shaft 3 are smooth, and the stroke locating sleeve 2 and the transmission shaft 3 can rotate relative to each other in the circumferential direction, so that the transmission shaft 3 can operate stably when rotating to transmit force to the brush head for cleaning operations.

[0031] In general, the drive shaft adjustment and positioning device of the utility model can fix the relative axial position of the travel positioning sleeve 2 and the drive shaft 3 through the fixing assembly, so that the travel positioning sleeve 2 can drive the drive shaft 3 to move, adjust and position along its axial direction relative to the fixing block 1, without affecting the relative rotation of the travel positioning sleeve 2 and the drive shaft 3. In this way, the adjustment and positioning device is applied to the cleaning tool, and the brush head can be adjusted and positioned at different axial positions for positioning and cleaning, and the rotation and force transmission of the drive shaft 3 to the brush head can be improved without affecting the cleaning effect.

[0032] Furthermore, the fixing block 1 can be detachably connected to the fixing bracket through the connecting hole and the connecting piece. The lower end of the transmission shaft 3 is connected to the brush head, and the upper end thereof is connected to the driving component for driving.

[0033] In one example, the fixed block 1 is provided with a penetrating central threaded hole, and the outer surface of the stroke locating sleeve 2 is provided with an external thread matching the central threaded hole. The stroke locating sleeve 2 is spirally rotated relative to the fixed block 1 to achieve movement, adjustment and positioning of the stroke locating sleeve 2 relative to the fixed block 1 along its axial direction.

[0034] Specifically, the travel locating sleeve 2 and the fixed block 1 are screw-fitted to achieve axial movement adjustment and positioning. The outer surface of the travel locating sleeve 2 is provided with an external thread arranged along the axial direction, and the center of the fixed block 1 is provided with a central threaded hole that matches and penetrates the external thread of the travel locating sleeve 2, so that the travel locating sleeve 2 can achieve axial movement adjustment while rotating in the central threaded hole of the fixed block 1, and achieve axial positioning when the rotation stops.

[0035] Furthermore, the external thread on the travel positioning sleeve 2 may be a T-shaped thread.

[0036] In one example, the adjustment and positioning device further includes an adjustment bracelet 4 for being sleeved on the transmission shaft 3 , and the adjustment bracelet 4 is fixed to the stroke positioning sleeve 2 , and is used to drive the stroke positioning sleeve 2 to spirally rotate.

[0037] Specifically, the adjustment bracelet 4 is circumferentially fixed to the stroke positioning sleeve 2, and can be driven by external force to rotate the adjustment bracelet 4 around the axis of the transmission shaft 3 to drive the stroke positioning sleeve 2 to rotate together, and then the axial movement adjustment is achieved through the spiral rotation of the stroke positioning sleeve 2 and the fixed block 1.

[0038] Specifically, the adjusting bracelet 4 rotates clockwise to drive the travel positioning sleeve 2 to rotate clockwise, so that the travel positioning sleeve 2 moves downward relative to the fixed block 1 for adjustment; the adjusting bracelet 4 rotates counterclockwise to drive the travel positioning sleeve 2 to rotate counterclockwise, so that the travel positioning sleeve 2 moves upward relative to the fixed block 1 for adjustment.

[0039] Furthermore, the structure of the adjusting wristband 4 may be the same as that of the valve handwheel to facilitate manual rotation.

[0040] In one example, the adjusting bracelet 4 and the travel positioning sleeve 2 are fixed by a key connection or a pin connection.

[0041] Specifically, the adjusting bracelet 4 and the travel positioning sleeve 2 can be connected and fixed by a flat key, a spline or a wedge key. The adjusting bracelet 4 and the travel positioning sleeve 2 can also be connected and fixed by a pin passing through the corresponding connecting holes of the two.

[0042] In an example, Figure 1 and Figure 2 As shown, the adjusting bracelet 4 is sleeved on the axial extension portion 201 at the upper end of the travel positioning sleeve 2, the outer ring of the axial extension portion 201 is an irregular circular structure, and the center of the adjusting bracelet 4 is provided with a central mounting hole 401 matching the outer ring structure of the axial extension portion 201, so that the adjusting bracelet 4 and the travel positioning sleeve 2 are circumferentially fixed.

[0043] Specifically, the axial extension portion 201 is designed as an irregular circular structure, and the adjusting bracelet 4 is mounted together through the central mounting hole 401 matching its structure, so that the adjusting bracelet 4 cannot rotate relative to the axial extension portion 201 when rotating, that is, the adjusting bracelet 4 forms a circumferential linkage with the travel positioning sleeve 2. It should be noted that the principle of the circumferential linkage between the axial extension portion 201 and the central mounting hole 401 is similar to the principle of key connection, which is equivalent to forming the key connection structure and the travel positioning sleeve 2 into an integral shape.

[0044] In one example, the fixing assembly includes two fixing sleeves 5 respectively located at two ends of the travel positioning sleeve 2 , and the fixing sleeves 5 can be locked with the transmission shaft 3 so that the travel positioning sleeve 2 and the transmission shaft 3 are relatively axially fixed.

[0045] Specifically, the fixing assembly is locked with the transmission shaft 3 through the fixing sleeve 5, and the travel positioning sleeve 2 can be axially fixed at a position between the two fixing sleeves 5 on the transmission shaft 3. In this way, the axial adjustment and positioning of the travel positioning sleeve 2 relative to the fixing block 1 can be achieved to realize the axial adjustment and positioning of the transmission shaft 3.

[0046] It should be noted that the fixing sleeve 5 can also be unlocked from the transmission shaft 3 to adjust the axial position of the travel positioning sleeve 2 on the transmission shaft 3. When the fixing sleeve 5 is locked with the transmission shaft 3, the travel positioning sleeve 2 can rotate circumferentially relative to the fixing sleeve 5, that is, the circumferential rotation of the transmission shaft 3 and the circumferential rotation of the travel positioning sleeve 2 are not linked and do not affect each other.

[0047] In one example, a bearing 6 is provided between the fixed sleeve 5 and the travel positioning sleeve 2 , so that the travel positioning sleeve 2 can rotate circumferentially relative to the fixed sleeve 5 .

[0048] Furthermore, two protective covers 601 are provided at both ends of the bearing 6 along the axial direction, and the two protective covers 601 are in planar contact with the corresponding fixed sleeve 5 and the travel positioning sleeve 2 in the axial direction, and the two protective covers 601 are in rolling contact with each other through the balls 602, so that the travel positioning sleeve 2 can rotate circumferentially relative to the fixed sleeve 5. In this way, the rotation of the transmission shaft 3 and the rotation of the travel positioning sleeve 2 do not form a linkage effect, that is, the longitudinal adjustment operation of the travel positioning sleeve 2 and the rotational force transmission operation of the transmission shaft 3 can be separated and do not affect each other.

[0049] In one example, the fixed sleeve 5 is in smooth contact with the travel positioning sleeve 2 , so that the travel positioning sleeve 2 can rotate circumferentially relative to the fixed sleeve 5 .

[0050] Specifically, the fixed sleeve 5 and the travel positioning sleeve 2 are in smooth contact, that is, the friction coefficient between the fixed sleeve 5 and the travel positioning sleeve 2 is extremely small, and the friction force is small and negligible when relative circumferential rotation occurs, and cannot drive each other to rotate circumferentially.

[0051] It should be noted that the fixed sleeve 5 and the travel positioning sleeve 2 can rotate relative to each other in the circumferential direction in two ways: the bearing 6 connection and the smooth contact described above. Figure 1 and Figure 2 What is shown is a specific way of applying the two connections at the same time. Specifically, the upper fixing sleeve 5 is connected to the adjusting bracelet 4 (i.e., the upper end of the travel positioning sleeve 2) through the bearing 6, and the lower fixing sleeve 5 is in smooth contact with the lower end of the travel positioning sleeve 2.

[0052] In one example, the fixing sleeve 5 is provided with a through hole which penetrates radially, and the through hole cooperates with the fastener 501 to lock the fixing sleeve 5 and the transmission shaft 3 .

[0053] Furthermore, the through hole may be configured as a threaded hole, and the fastener 501 may be a bolt.

[0054] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transmission shaft adjustment and positioning device, characterized in that: The adjusting and positioning device comprises a fixing block, a travel positioning sleeve and a fixing assembly, both of which are used to be sleeved on the transmission shaft, and the fixing block is sleeved outside the travel positioning sleeve to be fixedly installed with an external workpiece; The fixing assembly can fix the relative axial position of the travel positioning sleeve and the transmission shaft, the travel positioning sleeve can drive the transmission shaft to move, adjust and position along its axial direction relative to the fixing block, and the travel positioning sleeve can rotate circumferentially relative to the transmission shaft.

2. The transmission shaft adjustment and positioning device according to claim 1, characterized in that: The fixed block is provided with a penetrating central threaded hole, and the outer surface of the travel positioning sleeve is provided with an external thread matching the central threaded hole. The travel positioning sleeve is spirally rotated relative to the fixed block to achieve movement, adjustment and positioning of the travel positioning sleeve relative to the fixed block along its axial direction.

3. The transmission shaft adjustment and positioning device according to claim 2, characterized in that: The adjustment and positioning device also includes an adjustment bracelet for being sleeved on the transmission shaft, and the adjustment bracelet is fixed to the travel positioning sleeve and is used to drive the travel positioning sleeve to rotate spirally.

4. The transmission shaft adjustment and positioning device according to claim 3, characterized in that: The adjusting bracelet and the travel positioning sleeve are fixed by a key connection or a pin connection.

5. The transmission shaft adjustment and positioning device according to claim 3, characterized in that: The adjusting bracelet is sleeved on the axial extension portion of the upper end of the travel positioning sleeve, the outer ring of the axial extension portion is an irregular circular structure, and the center of the adjusting bracelet is provided with a central mounting hole matching the outer ring structure of the axial extension portion, so that the adjusting bracelet is circumferentially fixed to the travel positioning sleeve.

6. The transmission shaft adjustment and positioning device according to claim 1, characterized in that: The fixing assembly comprises two fixing sleeves respectively located at two ends of the travel positioning sleeve, and the fixing sleeves can be locked with the transmission shaft so that the travel positioning sleeve and the transmission shaft are relatively axially fixed.

7. The transmission shaft adjustment and positioning device according to claim 6, characterized in that: A bearing is provided between the fixed sleeve and the travel positioning sleeve so that the travel positioning sleeve can rotate circumferentially relative to the fixed sleeve.

8. The transmission shaft adjustment and positioning device according to claim 7, characterized in that: The bearing is provided with two protective covers at both ends along the axial direction. The two protective covers are in plane contact with the corresponding fixed sleeve or the travel locating sleeve in the axial direction. The two protective covers are in rolling contact with each other through balls so that the travel locating sleeve can rotate circumferentially relative to the fixed sleeve.

9. The transmission shaft adjustment and positioning device according to claim 6, characterized in that: The fixed sleeve is in smooth contact with the travel positioning sleeve, so that the travel positioning sleeve can rotate circumferentially relative to the fixed sleeve.

10. The transmission shaft adjustment and positioning device according to claim 6, characterized in that: The fixing sleeve is provided with a through hole which penetrates radially, and the through hole cooperates with a fastener to lock the fixing sleeve and the transmission shaft.

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