CN211103534U - Accurate aligning device of machinery - Google Patents
Accurate aligning device of machinery Download PDFInfo
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- CN211103534U CN211103534U CN201921300434.8U CN201921300434U CN211103534U CN 211103534 U CN211103534 U CN 211103534U CN 201921300434 U CN201921300434 U CN 201921300434U CN 211103534 U CN211103534 U CN 211103534U
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Abstract
The utility model relates to a mechanical accurate aligning device, a cylindrical transmission flexible shaft (1) and an accurate aligning mechanism (2), wherein the accurate aligning mechanism (2) comprises a left clasping ring (201) and a right clasping ring (202), the upper end of the cylindrical transmission flexible shaft (1) is connected with a power source of an operation mechanism, rotates and stretches along with the power source of the operation mechanism, and the lower end is an operation tool structure which can directly operate on a target; the cylindrical transmission flexible shaft (1) is made of flexible and bendable deformable materials, and when the transmission flexible shaft (1) is dislocated with the axis of a target workpiece or the axis of the transmission flexible shaft (1) has an inclination angle with the axis of the workpiece; in the accurate alignment process, under the condition that the position of the operation mechanism is not adjusted, the transmission flexible shaft (1) can be accurately aligned with the target workpiece through the bending deformation of the transmission flexible shaft (1).
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a mechanical accurate alignment device.
Background
In the prior art, in the process of assembly line operation, related work such as rust removal, oil coating or nut screwing is often required to be carried out on certain cylindrical parts, and accurate alignment is required to be carried out on the cylindrical parts firstly. If the sensor detection technology or the electronic image forming technology is adopted to obtain the accurate position of the cylindrical part, the requirement on the positioning accuracy of the sensor or the image processing equipment and the mechanism is high, so that the use cost is greatly increased, and meanwhile, the sensor or the electronic image forming technology has high requirement on the environment and cannot be used in a severe working environment.
For example, the utility model discloses a chinese utility model patent that publication number is CN 207421580U, it discloses a firm type clamp, including half clamp on a left side and half clamp on the right side, half clamp on a left side and half clamp one end on the right side are articulated, and the other end passes through bolt fixed connection, and half clamp on a left side and half clamp on the right side inner wall all are equipped with the arc locating piece, and the arc locating piece is through the positioning bolt fixed connection who runs through the clamp on the clamp, and the arc locating piece all is through two positioning bolt and clamp fixed connection, and half clamp on a left side and half clamp on the right side inner wall all are equipped with the recess, and recess and arc locating piece agree with mutually. The utility model discloses simple structure, job stabilization is reliable, can adjust the position of arc locating piece according to the pipeline specification, and is fixed completely with the pipeline, avoids not hard up in the use, effectively improves and connects availability factor. However, the clamp is only suitable for connecting pipes, and the left and right clamp halves can only be used for connecting pipes with two axes in one.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention aims to provide a mechanical precise alignment device, when a transmission flexible shaft and a target workpiece are in misalignment or an axis of the transmission flexible shaft and an axis of the workpiece have an inclination angle; in the accurate alignment process, under the condition that the position of the operation mechanism is not adjusted, the transmission flexible shaft can be accurately aligned with the target workpiece through the bending deformation of the transmission flexible shaft. When the oil applying device is applied to oil applying work of parts on a production line, the oil consumption can be reduced; when the rust remover is applied to rust removal of parts, the working efficiency can be improved; when the screw tightening device is applied to screw tightening, the screw can be accurately positioned and tightened regardless of whether the screw is in a skew state.
The mechanical accurate alignment device can be applied to occasions of oil coating, rust removal, nut screwing and the like of parts, and different work can be realized only by fixing different working mechanisms on the transmission flexible shaft in different occasions.
In order to achieve the design purpose, the scheme adopted by the invention is as follows:
the invention provides a mechanical accurate alignment device, which comprises a cylindrical transmission flexible shaft 1 and an accurate alignment mechanism, wherein the accurate alignment mechanism comprises a left holding ring and a right holding ring, the upper end of the cylindrical transmission flexible shaft is connected with a power source of an operation mechanism and rotates and stretches along with the power source of the operation mechanism, and the lower end of the cylindrical transmission flexible shaft is of an operation tool structure and can directly operate on a target; the cylindrical transmission flexible shaft is made of flexible and bendable deformable materials, and when the transmission flexible shaft is dislocated with the axis of a target workpiece or the axis of the transmission flexible shaft has an inclination angle with the axis of the workpiece; in the accurate counterpoint process, under the condition of not adjusting the position of operation mechanism, through the bending deformation of transmission flexible axle, can make transmission flexible axle and accurate counterpoint of target work piece. The left holding ring and the right holding ring hold the transmission flexible shaft above and the target workpiece below tightly at two coaxial cylindrical surfaces formed inside when the telescopic mechanism stretches, so that the axes of the transmission flexible shaft and the target workpiece are superposed, and the function of mechanical accurate alignment is achieved.
Because the left enclasping ring and the right enclasping ring can only perform telescopic motion along the axis direction of the telescopic cylinder, the precision of the left enclasping ring and the right enclasping ring is kept unchanged when enclasping.
Preferably, the axis of the cylindrical transmission flexible shaft is superposed with the axis of the target workpiece, so that the mechanical accurate alignment function is realized.
In any of the above schemes, preferably, the precise alignment mechanism is connected to the operation mechanism in a floating manner through a compression spring and a flexible cable. The flexible inhaul cable has the characteristics of softness, flexibility, difficulty in stretching and the like. When the axis of the workpiece has an inclination angle with the symmetrical center lines of the left and right holding rings, the workpiece can be effectively held tightly by the left and right holding rings through the bending deformation of the flexible inhaul cable in the mechanical accurate alignment process.
Preferably in any one of the above schemes, the left clasping ring and the right clasping ring are connected together through a hinge shaft, a spacer ring, a slotted cylinder head screw and a telescopic mechanism, when the telescopic mechanism extends out, the distance between the left clasping ring and the right clasping ring is increased, and when the cylinder contracts, the distance is reduced.
In any of the above schemes, preferably, the left clasping ring and the right clasping ring are respectively provided with two flexible inhaul cables; and the left holding ring and the right holding ring are respectively provided with an installation support.
In any of the above schemes, preferably, one end of the flexible inhaul cable is connected with the left clasping ring and the right clasping ring through hexagon socket head cap screws, and the other end of the flexible inhaul cable is connected with the mounting support in a floating manner through a compression spring. The mounting supports are two, are symmetrically connected to two sides of the operating mechanism and can synchronously move up and down and horizontally along with the operating mechanism.
In any of the above schemes, preferably, the left clasping ring and the right clasping ring are both internally provided with two coaxial semi-cylindrical surfaces, which are an upper semi-cylindrical surface and a lower semi-cylindrical surface respectively.
In any of the above schemes, preferably, the diameter of the upper semi-cylindrical surface is equal to the diameter of the outer cylindrical surface of the transmission flexible shaft; the diameter of the lower semi-cylindrical surface is equal to that of the outer cylindrical surface of the target workpiece.
In any of the above aspects, preferably, the proximity switch is fixed to the step formed between the upper semi-cylindrical surface and the lower semi-cylindrical surface by screw connection. When the transmission flexible shaft is close to the proximity switch, the proximity switch sends out a control signal to open the contraction mechanism. When the mechanism is in a free state, the axis of the transmission flexible shaft is superposed with the axis of the accurate alignment mechanism. When the operation mechanism moves to the position right above a target workpiece in a coarse positioning mode, the mechanism moves downwards by a certain distance through control until the target workpiece is inserted into the left and right clasping rings, the cylinder between the left and right clasping rings contracts through control, at the moment, the semi-cylindrical surface inside the left clasping ring and the semi-cylindrical surface corresponding to the inside of the right clasping ring are attached to form the same cylindrical surface, one cylindrical surface clasps the transmission flexible shaft above the cylindrical surface, the other cylindrical surface clasps the target workpiece below the cylindrical surface, the transmission flexible shaft is enabled to coincide with the axis of the target workpiece, and the mechanical accurate alignment function is realized.
In any of the above schemes, preferably, the flexible transmission shaft is a double-joint universal joint.
In any of the above schemes, preferably, the telescopic mechanism is a telescopic cylinder or a telescopic oil cylinder.
The second aspect of the present invention provides an operation process of a mechanical precision alignment device, which includes the following steps:
step A: adjusting the position of the operating mechanism in a coarse positioning mode to enable the operating mechanism to be positioned right above a target workpiece;
and B: the mechanism moves downwards until the target workpiece is inserted into the left and right holding rings;
and C: the telescopic mechanism between the left holding ring and the right holding ring is controlled to be telescopic, at the moment, an upper semi-cylindrical surface and a lower semi-cylindrical surface in the left holding ring and an upper semi-cylindrical surface and a lower semi-cylindrical surface corresponding to the right holding ring are attached to form two cylindrical surfaces, one of the cylindrical surfaces holds a transmission flexible shaft above, and the other cylindrical surface holds a target workpiece below, so that the transmission flexible shaft is coincided with the axis of the target workpiece, and the mechanical accurate alignment function is realized;
step D: on the premise of accurate alignment, the operation of a target workpiece is carried out by an operation tool structure at the lower end of the transmission flexible shaft;
step E: after the operation is finished, the telescopic mechanism is opened through the detection control of the proximity switch, and the accurate alignment is cancelled;
step F: the mechanism is retracted to prepare for the next operation.
Compared with the prior art, the mechanical accurate alignment device has the following advantages and effects:
1. through two coaxial cylindrical surfaces formed inside the left holding ring and the right holding ring when the telescopic mechanism contracts, the driving flexible shaft above and the target workpiece below are held tightly, under the condition that the position of the operation mechanism is not changed, the axes of the driving flexible shaft and the target workpiece are enabled to coincide, and the function of mechanical accurate alignment is achieved.
2. The power source that opens and stretch out and draw back of left and right enclasping ring is installed two sets of telescopic cylinder or hydro-cylinder in left and right enclasping ring both sides, because left enclasping ring, right enclasping ring can only carry out concertina movement along telescopic machanism's axis direction, this makes left enclasping ring, right enclasping ring precision when enclasping keep unchangeable.
3. The flexible inhaul cable has the characteristics of softness, flexibility, difficulty in stretching and the like. When the axis of the workpiece and the symmetrical center lines of the left and right clasping rings have inclination angles, the left flexible inhaul cable has the characteristics of softness, flexibility, difficulty in stretching and the like through the bending deformation of the flexible inhaul cable in the mechanical accurate alignment process. When the axis of the workpiece has an inclination angle with the symmetrical center lines of the left and the right holding rings, the left and the right holding rings can effectively hold the workpiece and the right holding ring can effectively hold the workpiece through the bending deformation of the flexible inhaul cable in the mechanical accurate alignment process.
4. Four compression springs between the flexible inhaul cable and the left mounting seat and between the flexible inhaul cable and the right mounting seat are in a compression balance state. When the axis of the workpiece is staggered with the symmetric centers of the left and right clasping rings, the deformation of the compression springs on the left and right sides is changed in the mechanical accurate alignment process, the compression deformation of the compression spring far away from the axis of the workpiece is increased, and the compression deformation of the compression spring near the axis of the workpiece is reduced, so that the workpiece can be effectively clasped by the left and right clasping rings.
5. Because the transmission flexible shaft has the function of bending deformation, when the transmission flexible shaft is dislocated with the axis of a target workpiece or the axis of the transmission flexible shaft has an inclination angle with the axis of the workpiece, in the accurate alignment process, the accurate alignment of the transmission flexible shaft and the target workpiece can be realized through the bending deformation of the transmission flexible shaft under the condition of not adjusting the position of the operation mechanism.
6. The distance between the transmission flexible shaft and the clasping ring is detected through the proximity switch, and then the stretching action of the clasping mechanism is controlled.
7. This accurate aligning device has realized the accurate counterpoint to target work piece and operating device under the coarse positioning operating mode, and the device structure is exquisite, can adapt to abominable operational environment, and low in manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of a mechanical precision alignment apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the mechanical precision alignment device according to the present invention, in which the flexible transmission shaft is removed in the preferred embodiment shown in fig. 1.
Fig. 3 is a front view of the preferred embodiment of the mechanical precision alignment device shown in fig. 2 according to the present invention.
Fig. 4 is a flowchart illustrating an operation process of the embodiment of fig. 1 of the precision mechanical alignment apparatus according to the present invention.
Fig. 5 is a schematic structural diagram of the mechanical precision alignment device according to the embodiment of the invention shown in fig. 1, in a state where the axis of the flexible transmission shaft and the axis of the target workpiece coincide with each other.
Fig. 6 is a schematic structural diagram of the mechanical precision alignment device according to the embodiment of the invention shown in fig. 1, in a state where the axis of the flexible transmission shaft and the axis of the target workpiece are dislocated.
Fig. 7 is a schematic structural diagram of the mechanical precision alignment device according to the embodiment of the invention shown in fig. 1, in a state where the axis of the flexible transmission shaft and the axis of the target workpiece are inclined.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be derived by a person skilled in the art without inventive effort.
As shown in fig. 1-2, a structure of a preferred embodiment of the precision mechanical alignment apparatus according to the present invention is schematically illustrated. The invention relates to a mechanical accurate alignment device, which comprises a cylindrical transmission flexible shaft 1 and an accurate alignment mechanism 2, wherein the accurate alignment mechanism 2 comprises a left holding ring 201 and a right holding ring 202, the upper end of the cylindrical transmission flexible shaft 1 is connected with a power source of an operation mechanism and rotates and stretches together with the power source of the operation mechanism, and the lower end of the cylindrical transmission flexible shaft is of an operation tool structure and can directly operate on a target; the cylindrical transmission flexible shaft 1 is made of flexible and bendable deformable materials, and when the transmission flexible shaft 1 is dislocated with the axis of a target workpiece (shown in figure 6) or the axis of the transmission flexible shaft 1 has an inclination angle with the axis of the workpiece (shown in figure 7); in the accurate alignment process, under the condition that the position of the operation mechanism is not adjusted, the transmission flexible shaft 1 can be accurately aligned with the target workpiece through the bending deformation of the transmission flexible shaft. The left enclasping ring 201 and the right enclasping ring 202 are used for enclasping the transmission flexible shaft 1 above and the target workpiece below tightly on two coaxial cylindrical surfaces formed inside when the telescopic mechanism 203 is telescopic, so that the axes of the transmission flexible shaft and the target workpiece are coincided, and the function of mechanical accurate alignment is achieved.
Because the left enclasping ring 201 and the right enclasping ring 202 can only perform telescopic motion along the axial direction of the telescopic cylinder, the precision of the left enclasping ring 201 and the right enclasping ring 202 is kept unchanged when enclasping.
As shown in fig. 2 and fig. 3, the mechanical precision alignment device according to the present invention has a structure diagram of the preferred embodiment shown in fig. 1 with the flexible transmission shaft removed.
In this embodiment, the axis of the cylindrical flexible transmission shaft 1 coincides with the axis of the target workpiece (as shown in fig. 5), so as to achieve a mechanical precise alignment function.
In the present embodiment, the precise alignment mechanism 2 is floatingly connected to the working mechanism through a compression spring 206 and a flexible cable 207. The flexible cable 207 is soft, flexible, and not easily stretched. When the axis of the workpiece has an inclination angle with the symmetric center lines of the left enclasping ring 201 and the right enclasping ring 202, the workpiece can be effectively enclasping by the left enclasping ring 201 and the right enclasping ring 202 through the bending deformation of the flexible inhaul cable 207 in the mechanical accurate alignment process.
In this embodiment, the left clasp 201 and the right clasp 202 are connected together through the hinge shaft 204, the spacer ring 205, the slotted socket head screw 210 and the telescoping mechanism 203, when the telescoping mechanism 203 extends, the distance between the left clasp 201 and the right clasp 202 increases, and when the telescoping mechanism 203 contracts, the distance decreases.
In this embodiment, two flexible cables 207 are respectively disposed on the left clasp 201 and the right clasp 202; the left clasp 201 and the right clasp 202 are respectively provided with a mounting seat 208.
In this embodiment, one end of the flexible cable 207 is connected to the left clasp 201 and the right clasp 202 through hexagon socket cap screws 209, and the other end is floatingly connected to the mounting seat 208 through the compression spring 206. The mounting supports 208 are symmetrically connected to both sides of the working mechanism, and can move up and down and horizontally along with the working mechanism.
In this embodiment, the left clasp 201 and the right clasp 202 are each provided with two coaxial semi-cylindrical surfaces, which are an upper semi-cylindrical surface D and a lower semi-cylindrical surface D.
In this embodiment, the diameter of the upper semi-cylindrical surface D is equal to the diameter of the outer cylindrical surface of the transmission flexible shaft 1; the diameter of the lower semi-cylindrical surface d is equal to the diameter of the outer cylindrical surface of the target workpiece.
In this embodiment, a proximity switch 211 is fixed to the step formed between the upper semi-cylindrical surface D and the lower semi-cylindrical surface D by a screw connection. When the flexible transmission shaft 1 approaches the proximity switch 211, the proximity switch 211 sends a control signal to open the telescopic mechanism 203. When the flexible shaft is in a free state, the axis of the flexible transmission shaft 1 is superposed with the axis of the accurate alignment mechanism. When the operation mechanism moves to the position right above a target workpiece in a coarse positioning mode, the mechanism moves downwards by a certain distance through control until the target workpiece is inserted into the left and right clasping rings, the cylinder between the left and right clasping rings stretches out and draws back through control, at the moment, the semi-cylindrical surface inside the left clasping ring and the semi-cylindrical surface corresponding to the inside of the right clasping ring are attached to form the same cylindrical surface, one of the cylindrical surfaces clasps the transmission flexible shaft above the cylindrical surface, the other cylindrical surface clasps the target workpiece below the cylindrical surface, the transmission flexible shaft is made to coincide with the axis of the target workpiece, and the mechanical accurate alignment function is realized.
In this embodiment, the flexible transmission shaft 1 is a double-joint universal joint.
In this embodiment, the telescopic mechanism 203 is a telescopic cylinder or a telescopic oil cylinder.
Referring to fig. 5-7, after the working mechanism is located right above the target spike, the telescoping mechanism 203 is controlled to retract, and the semi-cylindrical surfaces rancour inside the left clasp 201 and the right clasp 202 are combined to form a complete cylindrical surface.
When the axis of the target workpiece is dislocated with the axis of the operating mechanism, in the process of clasping the left clasping ring 201 and the right clasping ring 202, the deformation of the compression springs 206 on the left side and the right side are inconsistent, the compression deformation of the compression springs 206 far away from the axis is increased, the deformation of the compression springs 206 near the axis is decreased, and the flexible transmission shaft 1 at the output end of the operating mechanism is bent, so that the axis of the target workpiece is coincided with the axis of the flexible transmission shaft 1.
When the axis of the target workpiece and the axis of the operating mechanism have an inclination angle, in the process of holding tightly, the deformation of the compression spring 206 at one end is increased, the deformation of the compression spring 206 at the other end is reduced, and the flexible inhaul cable 207 and the transmission flexible shaft 1 are bent and deformed, so that the axes of the target workpiece and the transmission flexible shaft 1 are superposed.
As shown in fig. 4, the operation process of the mechanical precision alignment device of the present invention includes the following steps:
step A: adjusting the position of the operating mechanism in a coarse positioning mode to enable the operating mechanism to be positioned right above a target workpiece;
and B: the mechanism moves downwards until the target workpiece is inserted into the left clasping ring 201 and the right clasping ring 202;
and C: the telescopic mechanism 203 between the left enclasping ring 201 and the right enclasping ring 202 is controlled to be telescopic, at the moment, an upper semi-cylindrical surface and a lower semi-cylindrical surface inside the left enclasping ring 201 and a corresponding upper semi-cylindrical surface and a corresponding lower semi-cylindrical surface inside the right enclasping ring 202 are attached to form two cylindrical surfaces, one cylindrical surface embraces the transmission flexible shaft 1 above, and the other cylindrical surface embraces the target workpiece below, so that the transmission flexible shaft 1 is enabled to coincide with the axis of the target workpiece, and the function of mechanical accurate alignment is realized;
step D: on the premise of accurate alignment, the operation of a target workpiece is carried out by an operation tool structure at the lower end of the transmission flexible shaft;
step E: after the operation is finished, the telescopic mechanism 203 is opened through the detection control of the proximity switch 211, and the accurate alignment is cancelled;
step F: the mechanism is retracted to prepare for the next operation.
It will be understood by those skilled in the art that the mechanical precision aligning device of the present invention includes any combination of the parts in the present specification. These combinations are not described in detail herein for the sake of brevity and clarity, but the scope of the invention, which is defined by any combination of the parts constructed in this specification, will become apparent after review of this specification.
Claims (11)
1. The utility model provides an accurate aligning device of machinery, cylindrical transmission flexible axle (1) and accurate counterpoint mechanism (2), accurate counterpoint mechanism (2) are embraced ring (201) and right and are embraced ring (202), its characterized in that including a left side: the upper end of the cylindrical transmission flexible shaft (1) is connected with a power source of the operation mechanism, and rotates and stretches along with the power source of the operation mechanism, and the lower end of the cylindrical transmission flexible shaft is of an operation tool structure and can directly operate on a target; the cylindrical transmission flexible shaft (1) is made of flexible and bendable deformable materials.
2. The precision mechanical alignment device of claim 1, wherein: the axis of the cylindrical transmission flexible shaft (1) is superposed with the axis of the target workpiece.
3. The precision mechanical alignment device of claim 1, wherein: the precise alignment mechanism (2) is connected to the operation mechanism in a floating mode through a compression spring (206) and a flexible inhaul cable (207).
4. The precision mechanical alignment device of claim 1, wherein: the left clasping ring (201) and the right clasping ring (202) are connected together through a hinge shaft (204), a space ring (205), a slotted cylindrical head screw (210) and a telescopic mechanism (203).
5. The precision mechanical alignment device according to claim 1 or 4, wherein: two flexible inhaul cables (207) are respectively arranged on the left enclasping ring (201) and the right enclasping ring (202); the left holding ring (201) and the right holding ring (202) are respectively provided with a mounting support (208).
6. The precision mechanical alignment device of claim 3, wherein: one end of a flexible inhaul cable (207) is connected with the left enclasping ring (201) and the right enclasping ring (202) through an inner hexagonal socket head cap screw (209), and the other end of the flexible inhaul cable is connected with the mounting support (208) in a floating mode through a compression spring (206).
7. The precision mechanical alignment device according to claim 1 or 4, wherein: the left clasping ring (201) and the right clasping ring (202) are internally provided with two coaxial semi-cylindrical surfaces which are an upper semi-cylindrical surface (D) and a lower semi-cylindrical surface (D) respectively.
8. The precision mechanical alignment device of claim 7, wherein: the diameter of the upper semi-cylindrical surface (D) is equal to that of the outer cylindrical surface of the transmission flexible shaft (1); the diameter of the lower semi-cylindrical surface (d) is equal to that of the outer cylindrical surface of the target workpiece.
9. The precision mechanical alignment device of claim 7, wherein: and a proximity switch (211) is fixedly connected on the step formed between the upper semi-cylindrical surface (D) and the lower semi-cylindrical surface (D) through threads.
10. The precision mechanical alignment device of claim 1, wherein: the transmission flexible shaft (1) adopts a double-joint universal joint.
11. The precision mechanical alignment device of claim 4, wherein: the telescopic mechanism (203) is a telescopic cylinder or a telescopic oil cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921300434.8U CN211103534U (en) | 2019-08-12 | 2019-08-12 | Accurate aligning device of machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921300434.8U CN211103534U (en) | 2019-08-12 | 2019-08-12 | Accurate aligning device of machinery |
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| CN211103534U true CN211103534U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112123263A (en) * | 2020-09-16 | 2020-12-25 | 湖南响箭重工科技有限公司 | Adjustable multi-connected oil pump mounting device |
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2019
- 2019-08-12 CN CN201921300434.8U patent/CN211103534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112123263A (en) * | 2020-09-16 | 2020-12-25 | 湖南响箭重工科技有限公司 | Adjustable multi-connected oil pump mounting device |
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