Centering press-fitting device for assembling heavy assembly and cylinder body assembly

Abstract

According to the centering press-fitting device for assembling the heavy assembly and the cylinder body assembly, the cylinder body assembly is positioned at the preset position on the first pressing plate only through the first positioning assembly, and the rotor assembly is positioned at the preset position on the base through the second positioning assembly; and then the corresponding guide columns are sleeved with the guide sliding holes in the first pressing plate respectively, the first pressing plate can be driven by a linear driver such as an air cylinder, and the cylinder body assembly is pressed on the rotor assembly. Moreover, a second pressing plate with a pressing head is arranged, the pressing head only needs to adsorb and connect the counterweight assembly to the second pressing plate, and after the second pressing plate downwards drives the pressing head to be inserted into the alignment hole, a connecting shaft of the counterweight assembly on the pressing head can be collinear with the central axis of the axis hole in the cylinder body assembly; therefore, the connecting shaft of the counterweight assembly is aligned with the axis hole in the cylinder body assembly, the assembling difficulty of the counterweight assembly and the cylinder body assembly is reduced, the counterweight assembly and the cylinder body assembly can be pressed in place at a time, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressor assembly equipment, in particular to a centering press-fitting device for assembling a counterweight assembly and a cylinder assembly. Background Art

[0002] The air compressor used in the automobile air suspension system compresses the input air to provide high-pressure compressed air, and inputs the compressed air into air storage containers such as air tanks or air springs to improve the stability, smoothness and comfort of the car's driving. At present, the air compressor includes a compression cylinder, a piston assembly arranged in the compression cylinder, and a motor that drives the piston assembly to perform piston movement in the compression cylinder. During the production process of the air compressor, it is usually necessary to press-fit the counterweight assembly and the cylinder assembly. Since the counterweight assembly and the cylinder assembly rely on manual assembly, it is usually difficult to align the connecting shaft on the counterweight assembly and the axial center hole on the cylinder assembly, which makes it impossible to assemble them in place in one go, reducing the assembly efficiency of the counterweight assembly and the cylinder assembly. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, one of the purposes of the embodiments of the utility model is to provide a centering and pressing device for assembling a counterweight assembly and a cylinder assembly, so as to solve the problem in the prior art that, during the manual assembly process of the counterweight assembly and the cylinder assembly, it is easy for the connecting shaft on the counterweight assembly and the axial hole on the cylinder assembly to be difficult to align, resulting in the counterweight assembly and the cylinder assembly being unable to be assembled in place in one go.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a centering press-fitting device for assembling a counterweight assembly and a cylinder assembly, comprising:

[0005] Base;

[0006] A first pressing plate, used for pressing the cylinder assembly onto the rotor assembly, wherein the first pressing plate is disposed above the base;

[0007] A guide assembly, used for guiding the first pressing plate to press down the cylinder assembly, the guide assembly comprising at least two guide posts arranged in parallel and spaced apart between the first pressing plate and the base, the first pressing plate correspondingly provided with first guide sliding holes for slidingly cooperating with the guide posts, each of the first guide sliding holes being sleeved on the corresponding guide posts;

[0008] A first positioning assembly, used for positioning the cylinder assembly on the first pressing plate;

[0009] A second positioning assembly, used for positioning the rotor assembly on the base;

[0010] A pressure head, used for adsorbing and connecting the counterweight assembly; and

[0011] A second pressing plate is used to drive the pressing head to press the counterweight assembly onto the cylinder assembly;

[0012] Among them, the first pressure plate is provided with an alignment hole for aligning with the axial hole on the cylinder assembly. After the pressure head is inserted into the alignment hole, the connecting shaft of the counterweight assembly is accommodated and positioned in the axial hole on the cylinder assembly so that the central axis of the connecting shaft is colinear with the central axis of the axial hole.

[0013] Furthermore, a negative pressure chamber is provided inside the pressure head, a negative pressure suction hole for connecting with a negative pressure aspirator is provided on the outer peripheral surface of the pressure head, a negative pressure adsorption hole for adsorbing a counterweight assembly onto the pressure head is provided at the bottom of the pressure head, and the negative pressure suction hole and the negative pressure adsorption hole are both connected with the negative pressure chamber.

[0014] Furthermore, a locking position for cooperating with the positioning counterweight assembly is provided at the bottom of the pressing head, and an arc-shaped locking groove for cooperating with the columnar protrusion on the counterweight assembly is provided on the pressing head.

[0015] Furthermore, the pressure head is a magnetic attraction component made of magnetic material, and the counterweight assembly is an iron block or a steel block with a semicircular cross-section.

[0016] Furthermore, the second pressing plate is provided with corresponding second guide sliding holes for slidingly cooperating with the guide pillars, and each of the second guide sliding holes is sleeved on the corresponding guide pillar.

[0017] Furthermore, the second pressing plate is provided with a positioning groove for accommodating and positioning the top of the pressing head, and the centering pressing device for assembling the weight assembly and the cylinder assembly also includes a fastening bolt for fastening the pressing head in the positioning groove.

[0018] Furthermore, the second pressure plate is provided with a first hole, and the pressure head is correspondingly provided with a second hole, and the centering and pressing device for assembling the weight assembly and the cylinder assembly also includes a pin for sequentially inserting into the first hole and the second hole to limit the rotation of the pressure head.

[0019] Furthermore, the second positioning assembly includes a gantry arranged on the base, a second fastener fastening the gantry to a predetermined position on the base, a positioning seat arranged on the base and located below the gantry, and a third fastener fastening the positioning seat to a predetermined position on the base.

[0020] Furthermore, the gantry is provided with a positioning hole aligned with the alignment hole and a guide opening for guiding the rotor shaft of the rotor assembly into the positioning hole, and the rotor shaft is provided with a shoulder for abutting against the gantry to suspend the rotor assembly on the gantry.

[0021] Furthermore, the first positioning assembly includes two positioning clamps with L-shaped cross-sections arranged in pairs and a first fastener for fastening the positioning clamps to a predetermined position on the pressure plate.

[0022] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0023] The centering and pressing device for assembling the counterweight assembly and the cylinder assembly in the embodiment of the utility model only needs to position the cylinder assembly at a predetermined position on the first pressing plate by the first positioning assembly, and position the rotor assembly at a predetermined position on the base by the second positioning assembly, and then the guide sliding holes on the first pressing plate are respectively mounted on the corresponding guide pillars, and the first pressing plate can be driven by a linear driver such as a cylinder to press the cylinder assembly onto the rotor assembly. In addition, when a second pressing plate with a pressure head is provided, the pressure head only needs to adsorb and connect the counterweight assembly to the second pressing plate, and after the second pressing plate drives the pressure head downward and inserts it into the alignment hole, the connecting shaft of the counterweight assembly on the pressure head can be made to be colinear with the central axis of the axial hole on the cylinder assembly, so that the connecting shaft of the counterweight assembly and the axial hole on the cylinder assembly are kept in alignment, reducing the difficulty of assembling the counterweight assembly and the cylinder assembly, and further, the counterweight assembly and the cylinder assembly can be pressed into place at one time, which is conducive to improving the assembly efficiency of the counterweight assembly and the cylinder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a centering and pressing device for assembling a counterweight assembly and a cylinder assembly provided in an embodiment of the utility model;

[0026] Figure 2 An exploded view of a centering and pressing device for assembling a counterweight assembly and a cylinder assembly provided in an embodiment of the utility model;

[0027] Figure 3 An exploded view of the second pressing plate and the pressing head provided in an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of the three-dimensional structure of a counterweight assembly provided in an embodiment of the utility model;

[0029] Figure 5 A schematic diagram of the three-dimensional structure of a centering press-fitting device for assembling a counterweight assembly and a cylinder assembly provided by an embodiment of the utility model in a press-fitting work preparation state;

[0030] Figure 6 for Figure 5 A cross-sectional structural schematic diagram of a centering and pressing device for assembling a counterweight assembly and a cylinder assembly as shown in FIG;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of a centering press-fitting device for assembling a counterweight assembly and a cylinder assembly provided in an embodiment of the utility model in a press-fitting state;

[0032] Figure 8 for Figure 7 A top view of the structure of the centering and pressing device for assembling the counterweight assembly and the cylinder assembly shown in FIG.

[0033] Fig. 9 for Figure 8 A schematic cross-sectional view of the centering and pressing device for assembling a counterweight assembly and a cylinder assembly along line AA shown in FIG.

[0034] Fig.10 The schematic cross-sectional structure diagram of the centering and pressing device for assembling a counterweight assembly and a cylinder assembly along line BB is shown in FIG.

[0035] Among them, the reference numerals in the figure are:

[0036] 1-base; 11-handle;

[0037] 2-first pressing plate; 21-first guide sliding hole; 22-alignment hole;

[0038] 3-guide assembly; 31-guide column;

[0039] 4-first positioning assembly; 41-positioning clamp; 42-first fastener;

[0040] 5-second positioning assembly; 51-gantry; 52-second fastener; 53-positioning seat; 54-third fastener; 55-positioning hole; 56-guide port;

[0041] 6-pressure head; 61-negative pressure suction hole; 62-negative pressure adsorption hole; 63-card position; 64-arc-shaped card slot; 65-second plug hole;

[0042] 7-second pressing plate; 71-second guide sliding hole; 72-positioning groove; 73-first plug hole;

[0043] 8-weight assembly; 81-weight block; 82-connecting shaft; 83-columnar protrusion;

[0044] 9-cylinder assembly; 91-axial center hole;

[0045] 10-fastening bolt; 20-rotor assembly; 30-rotor shaft;

[0046] 40-shaft shoulder; 50-shock absorber; 60-pin. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. The meaning of "plurality" is one or more, unless otherwise clearly and specifically defined.

[0050] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0053] Please also read Figures 1 to 10 The centering and pressing device for assembling a weight assembly and a cylinder assembly provided by the embodiment of the utility model is now described. Figure 1 , Figure 2 and Figure 6 The centering press-fitting device for assembling a weight assembly and a cylinder assembly provided by the embodiment of the utility model comprises a base 1, a first pressing plate 2, a guide assembly 3, a first positioning assembly 4, a second positioning assembly 5, a pressing head 6 and a second pressing plate 7. A handle 11 is provided on the base 1. The first pressing plate 2 is provided above the base 1. The first pressing plate 2 can press the cylinder assembly 9 onto the rotor assembly 20 under the driving action of a linear actuator such as a cylinder. The guide assembly 3 is used to guide the first pressing plate 2 to press down the cylinder assembly 9 to prevent the first pressing plate 2 from positionally shifting during the process of pressing down the cylinder assembly 9. The guide assembly 3 comprises at least two guide pillars 31 arranged in parallel and at intervals between the first pressing plate 2 and the base 1. The central axis of each guide pillar 31 is perpendicular to the plane where the base 1 is located. The first pressing plate 2 is correspondingly provided with a first guide sliding hole 21 for slidingly cooperating with the guide pillar 31. Each first guide sliding hole 21 is sleeved on the corresponding guide pillar 31, so that the first pressing plate 2 can be slidably installed on at least two guide pillars 31 up and down. The first positioning assembly 4 is arranged on the first pressing plate 2, and the cylinder assembly 9 can be positioned on the first pressing plate 2 through the first positioning assembly 4. The second positioning assembly 5 is arranged on the base 1, and the rotor assembly 20 can be positioned on the base 1 through the second positioning assembly 5. The pressing head 6 is arranged on the second pressing plate 7, and the pressing head 6 can adsorb and connect the counterweight assembly 8 to the second pressing plate 7. Under the driving action of a linear actuator such as a cylinder, the second pressing plate 7 can drive the pressing head 6 to press the counterweight assembly 8 onto the cylinder assembly 9. Please refer to Figure 6 , Figure 7 and Fig. 9 The first pressing plate 2 is provided with an alignment hole 22 for aligning with the axial hole 91 on the cylinder assembly 9. Under the driving action of a linear actuator such as a cylinder, the second pressing plate 7 drives the pressure head 6 downward to insert into the alignment hole 22. Since the central axis of the alignment hole 22 is in line with the central axis of the axial hole 91, the connecting axis of the counterweight assembly 8 on the pressing head 6 can be in line with the central axis of the axial hole 91 on the cylinder assembly 9, so that the connecting axis of the counterweight assembly 8 and the axial hole 91 on the cylinder assembly 9 are kept aligned, reducing the difficulty of assembling the counterweight assembly 8 and the cylinder assembly 9. By continuing to press the pressure head 6 with the second pressing plate 7, the counterweight assembly 8 and the cylinder assembly 9 can be pressed into place at one time, which is beneficial to improving the assembly efficiency of the counterweight assembly 8 and the cylinder assembly 9. It should be noted that please refer to Figure 2 , Figure 3 and Figure 5 The counterweight assembly 8 includes a semicircular counterweight block 81 and a connecting shaft 82 arranged on the counterweight block 81.

[0054] Compared with the prior art, the centering and pressing device for assembling a counterweight assembly and a cylinder assembly provided in the embodiment of the utility model only needs to position the cylinder assembly 9 at a predetermined position on the first pressure plate 2 through the first positioning assembly 4, and position the rotor assembly 20 at a predetermined position on the base 1 through the second positioning assembly 5, and then the guide sliding holes on the first pressure plate 2 are respectively mounted on the corresponding guide columns 31. The first pressure plate 2 can be driven by a linear driver such as a cylinder to press the cylinder assembly 9 onto the rotor assembly 20. Furthermore, when a second pressing plate 7 with a pressing head 6 is provided, the pressing head 6 only needs to adsorb and connect the counterweight assembly 8 to the second pressing plate 7. After the second pressing plate 7 drives the pressing head 6 downward and inserts it into the alignment hole 22, the connecting axis of the counterweight assembly 8 on the pressing head 6 and the central axis of the axial hole 91 on the cylinder assembly 9 can be made colinear, so that the connecting axis of the counterweight assembly 8 and the axial hole 91 on the cylinder assembly 9 remain aligned, reducing the difficulty of assembling the counterweight assembly 8 and the cylinder assembly 9, and further allowing the counterweight assembly 8 and the cylinder assembly 9 to be pressed into place at one time, which is beneficial to improving the assembly efficiency of the counterweight assembly 8 and the cylinder assembly 9.

[0055] Please refer to Figure 3 , Figure 5 and Figure 6In some embodiments, a negative pressure chamber is provided inside the pressure head 6, a negative pressure suction hole 31 for communicating with a negative pressure suction device is provided on the outer peripheral surface of the pressure head 6, and a negative pressure suction hole 62 for adsorbing the counterweight assembly 8 on the pressure head 6 is provided at the bottom of the pressure head 6, and the negative pressure suction hole 31 and the negative pressure adsorption hole 62 are both connected to the negative pressure chamber. Under the action of the negative pressure suction device, the negative pressure chamber inside the pressure head 6 is kept in a negative pressure state, and the counterweight assembly 8 only needs to be placed at a position corresponding to the negative pressure adsorption hole 62 on the pressure head 6, and the counterweight assembly 8 can be adsorbed on the pressure head 6 through the negative pressure adsorption effect, and the counterweight assembly 8 can be connected to the pressure head 6 conveniently and quickly. In addition, after the counterweight assembly 8 is press-fitted on the cylinder assembly 9, it is only necessary to control the negative pressure suction device to stop working, and at the same time, the pressure head 6 is driven to move upward by the second pressing plate 7, so that the pressure head 6 can be separated from the counterweight assembly 8 conveniently and quickly.

[0056] Please refer to Figure 3 , Figure 4 and Figure 6 In some embodiments, a latching position 63 for cooperating with the positioning counterweight assembly 8 is provided at the bottom of the pressure head 6, and an arc-shaped latching groove 64 for cooperating with the columnar protrusion 83 on the counterweight assembly 8 is provided on the pressure head 6. When the columnar protrusion 83 on the counterweight assembly 8 is latched in the arc-shaped latching groove 64 on the pressure head 6, it indicates that the counterweight assembly 8 has been positioned at the predetermined position in the latching position 63 of the pressure head 6, which not only helps to enhance the stability of the connection between the counterweight assembly 8 and the pressure head 6, but also effectively prevents the counterweight assembly 8 from being improperly assembled with the pressure head 6 and affecting the assembly of the counterweight assembly 8 and the cylinder assembly 9.

[0057] It can be understood that in some of the embodiments, in order to further enhance the stability of the connection between the counterweight assembly 8 and the pressure head 6 and prevent the counterweight assembly 8 from shaking or shifting, the pressure head 6 is a magnetic attraction piece made of magnetic material, and the counterweight assembly 8 is an iron block or steel block with a semicircular cross-section. The counterweight assembly 8 is firmly connected to the pressure head 6 by means of magnetic adsorption and negative pressure adsorption. In addition, after the counterweight assembly 8 is press-fitted onto the cylinder assembly 9, it is only necessary to control the negative pressure suction device to stop working, and at the same time drive the pressure head 6 to move upward through the second pressing plate 7 to overcome the magnetic adsorption force of the pressure head 6 on the counterweight assembly 8, so that the pressure head 6 can be separated from the counterweight assembly 8 conveniently and quickly.

[0058] Please refer to Figure 3 , Figure 6 , Figure 8 and Fig. 9In some embodiments, the second pressure plate 7 is provided with a second guide slide hole 71 for slidingly cooperating with the guide column 31, and each second guide slide hole 71 is sleeved on the corresponding guide column 31. Under the guiding action of the guide column 31, the stability between the pressure head 6 and the cylinder assembly 9 can be maintained, and the central axis of the pressure head 6 on the second pressure plate 7, the central axis of the axial hole 91 on the cylinder assembly 9 and the central axis of the connecting shaft on the counterweight assembly 8 are always kept in the same line, thereby avoiding the offset and dislocation of the counterweight assembly 8 during the press-fitting process, so that the connecting shaft of the counterweight assembly 8 and the axial hole 91 on the cylinder assembly 9 are kept aligned, reducing the difficulty of assembling the counterweight assembly 8 and the cylinder assembly 9, and then the counterweight assembly 8 and the cylinder assembly 9 can be press-fitted into place at one time, which is beneficial to improving the assembly efficiency of the counterweight assembly 8 and the cylinder assembly 9.

[0059] Please refer to Figure 3 , Figure 6 and Fig.10 In some embodiments, a positioning groove 72 for accommodating and positioning the top of the pressing head 6 is provided on the second pressing plate 7. The centering pressing device for assembling the counterweight assembly and the cylinder assembly also includes a fastening bolt 10 for fastening the pressing head 6 in the positioning groove 72. The top of the pressing head 6 is accommodated and positioned in the positioning groove 72 on the second pressing plate 7, and the pressing head 6 is fastened in the positioning groove 72 by the fastening bolt 10, thereby effectively preventing the pressing head 6 from shifting.

[0060] Please refer to Figure 3 , Figure 6 and Fig.10 In some embodiments, a first socket 73 is provided on the second pressure plate 7, and a second socket 65 is correspondingly provided on the pressure head 6. The centering and pressing device for assembling the counterweight assembly and the cylinder assembly also includes a pin 60 for sequentially inserting into the first socket 73 and the second socket 65. After the pin 60 is sequentially inserted into the first socket 73 and the second socket 65, it can not only limit the rotation of the pressure head 6, but also play a fool-proof role.

[0061] Please refer to Figure 2 , Figure 5 and Figure 7In some embodiments, the second positioning assembly 5 includes a gantry 51 disposed on the base 1, a second fastener 52 fastening the gantry 51 to a predetermined position on the base 1, a positioning seat 53 disposed on the base 1 and located below the gantry 51, and a third fastener 54 fastening the positioning seat 53 to a predetermined position on the base 1. When the gantry 51 is fastened to a predetermined position on the base 1 by the second fastener 52, the positioning hole 55 on the gantry 51 and the alignment hole 22 on the first pressing plate 2 can be kept aligned without displacement or misalignment, so that the central axis of the rotor shaft 30 in the positioning hole 55 is in line with the central axis of the alignment hole 22, which is conducive to keeping the cylinder assembly 9 and the rotor assembly 20 of the motor aligned and being able to be assembled in place at one time.

[0062] Please refer to Figure 1 , Figure 2 and Fig. 9 In some embodiments, the gantry 51 is provided with a positioning hole 55 aligned with the alignment hole 22 and a guide port 56 for guiding the rotor shaft 30 of the rotor assembly 20 to be placed into the positioning hole 55, so as to facilitate the rotor shaft 30 of the rotor assembly 20 to be accommodated and positioned in the positioning hole 55 on the gantry 51. The rotor shaft 30 is provided with a shaft shoulder 40 for abutting against the gantry 51. After the rotor shaft 30 of the rotor assembly 20 is accommodated and positioned in the positioning hole 55 on the gantry 51, due to the abutment between the shaft shoulder 40 and the gantry 51, the rotor shaft 30 is supported on the gantry 51 through the shaft shoulder 40, so that the entire rotor assembly 20 is suspended on the gantry 51 only through the rotor shaft 30, which is conducive to keeping the central axis of the rotor shaft 30 and the central axis of the alignment hole 22 in the same line.

[0063] Please refer to Figure 1 , Figure 2 and Fig. 9 In some embodiments, the first positioning assembly 4 includes two L-shaped positioning clamps 41 arranged in pairs and a first fastener 42 for fastening the positioning clamps 41 to a predetermined position on the first pressing plate 2. When the positioning clamps 41 are fastened to the predetermined position on the first pressing plate 2 by the first fastener 42, the two L-shaped positioning clamps 41 can clamp and position the cylinder assembly 9 at the predetermined position on the first pressing plate 2, so that the shaft hole on the cylinder assembly 9 and the alignment hole 22 on the first pressing plate 2 remain aligned without displacement or misalignment.

[0064] It can be understood that in some of the embodiments, the centering and pressing device for assembling the counterweight assembly and the cylinder assembly also includes a first cylinder or a first hydraulic cylinder for pushing the first pressure plate 2 to press down the cylinder assembly 9, a second cylinder or a second hydraulic cylinder for pushing the first pressure plate 2 to drive the pressure head 6 to press down the counterweight assembly 8, and a shock absorber 50 for stopping the first pressure plate 2 to limit the first pressure plate 2 from continuing to press down, and the shock absorber 50 is arranged on the guide column 31 or the base 1.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centering and pressing device for assembling a counterweight assembly and a cylinder assembly, characterized in that: include: Base; A first pressing plate, used for pressing the cylinder assembly onto the rotor assembly, wherein the first pressing plate is disposed above the base; A guide assembly, used for guiding the first pressing plate to press down the cylinder assembly, the guide assembly comprising at least two guide posts arranged in parallel and spaced apart between the first pressing plate and the base, the first pressing plate correspondingly provided with first guide sliding holes for slidingly cooperating with the guide posts, each of the first guide sliding holes being sleeved on the corresponding guide posts; A first positioning assembly, used for positioning the cylinder assembly on the first pressing plate; A second positioning assembly, used for positioning the rotor assembly on the base; A pressure head, used for adsorbing and connecting the counterweight assembly; as well as A second pressing plate is used to drive the pressing head to press the counterweight assembly onto the cylinder assembly; Among them, the first pressure plate is provided with an alignment hole for aligning with the axial hole on the cylinder assembly. After the pressure head is inserted into the alignment hole, the connecting shaft of the counterweight assembly is accommodated and positioned in the axial hole on the cylinder assembly so that the central axis of the connecting shaft is colinear with the central axis of the axial hole.

2. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 1, characterized in that: A negative pressure cavity is provided inside the pressure head, a negative pressure suction hole for connecting with a negative pressure aspirator is provided on the outer peripheral surface of the pressure head, a negative pressure adsorption hole for adsorbing a counterweight assembly onto the pressure head is provided at the bottom of the pressure head, and both the negative pressure suction hole and the negative pressure adsorption hole are connected with the negative pressure cavity.

3. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 2, characterized in that: The bottom of the pressure head is provided with a clamping position for cooperating with the positioning counterweight assembly, and the pressure head is provided with an arc-shaped clamping groove for cooperating with the columnar protrusion on the counterweight assembly.

4. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 3, characterized in that: The pressure head is a magnetic attraction piece made of magnetic material, and the counterweight component is an iron block or a steel block with a semicircular cross section.

5. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 1, characterized in that: The second pressing plate is correspondingly provided with second guide sliding holes for slidingly cooperating with the guide pillars, and each of the second guide sliding holes is sleeved on the corresponding guide pillar.

6. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 1, characterized in that: The second pressing plate is provided with a positioning groove for accommodating and positioning the top of the pressing head, and the centering pressing device for assembling the weight assembly and the cylinder assembly also includes a fastening bolt for fastening the pressing head in the positioning groove.

7. The centering and pressing device for assembling a counterweight assembly and a cylinder assembly according to claim 6, characterized in that: The second pressure plate is provided with a first plug hole, and the pressure head is correspondingly provided with a second plug hole. The centering and pressing device for assembling the weight assembly and the cylinder assembly also includes a pin for sequentially inserting into the first plug hole and the second plug hole to limit the rotation of the pressure head.

8. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 1, characterized in that: The second positioning assembly includes a gantry arranged on the base, a second fastener fastening the gantry to a predetermined position on the base, a positioning seat arranged on the base and located below the gantry, and a third fastener fastening the positioning seat to a predetermined position on the base.

9. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to claim 8, characterized in that: The gantry is provided with a positioning hole aligned with the alignment hole and a guide opening for guiding the rotor shaft of the rotor assembly into the positioning hole, and the rotor shaft is provided with a shoulder for abutting against the gantry to suspend the rotor assembly on the gantry.

10. The centering and pressing device for assembling a weight assembly and a cylinder assembly according to any one of claims 1 to 9, characterized in that: The first positioning assembly includes two positioning clamps arranged in pairs and having an L-shaped cross section, and a first fastener for fastening the positioning clamps to a predetermined position on the pressing plate.

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