Assembly mechanism

Abstract

The embodiment of the utility model belongs to the technical field of mechanical equipment, and particularly discloses an assembling mechanism which is configured to press a cylinder sleeve of an engine into a cylinder body and comprises a fixing support, a first positioning part, a driving assembly and a press fitting part. The fixing support is located beside the cylinder body, the first positioning piece is installed at the end, close to the cylinder body, of the fixing support, the fixing support is fixedly connected with the cylinder body through the first positioning piece, the driving assembly is installed on the fixing support, the press-fitting piece is in transmission connection with the driving assembly, and the driving assembly is configured to drive the press-fitting piece to move. And the press fitting piece is controlled to press the cylinder sleeve into the cylinder body. According to the engine cylinder sleeve and cylinder body assembling tool, the assembling efficiency of the cylinder sleeve and the cylinder body in an engine is improved, the production cost is reduced, meanwhile, the engine cylinder sleeve and cylinder body assembling tool is suitable for assembling cylinder sleeves and cylinder bodies of engines of different models, and good compatibility and flexibility are achieved.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment technology, and in particular to an assembly mechanism. Background Technology

[0002] The cylinder liner is a critical component of the engine block. During engine operation, the piston reciprocates within the cylinder. To improve the wear resistance of the cast iron cylinder bore, a thin-walled cylinder liner is pressed into the bore. This pressed-in thin-walled steel liner has high hardness, high surface quality, and excellent wear resistance, significantly extending the engine's lifespan.

[0003] Existing press-fitting equipment mainly relies on mechanical presses or hydraulic presses to press-fit cylinder blocks and cylinder liners. Typically, the cylinder block needs to be fixed on a dedicated tooling fixture, and then pressure is applied to the cylinder liner using the press's power source to bring it to the predetermined pressing position. However, existing press-fitting equipment has a complex structure and is usually suitable for specific models or sizes of cylinder blocks. When pressing different models of cylinder blocks, it may be necessary to change or adjust the fixture, leading to increased production line downtime, low pressing efficiency, and poor flexibility. Utility Model Content

[0004] Embodiments of this application provide an assembly mechanism to improve the assembly efficiency between the cylinder liner and the cylinder block in an engine.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] On the one hand, an assembly mechanism is provided, which is configured to press-fit the cylinder liner of an engine into the cylinder body. The assembly mechanism includes: a fixed bracket, a first positioning member, a drive assembly, and a pressing member.

[0007] The fixed bracket is located on the side of the cylinder block. The first positioning member is installed on the fixed bracket at the end near the cylinder block. The fixed bracket is fixedly connected to the cylinder block through the first positioning member. The drive assembly is installed on the fixed bracket. The press-fitting member is connected to the drive assembly in a transmission manner. The drive assembly is configured to drive the press-fitting member to move, so as to control the press-fitting member to press the cylinder liner into the cylinder block.

[0008] In addition to one or more of the features disclosed above, or as an alternative, the fixed bracket includes: a first fixed part and a second fixed part connected to each other, the first fixed part being disposed near the cylinder body relative to the second fixed part, a first positioning member being mounted on the end of the first fixed part near the cylinder body, and a drive assembly being mounted on the second fixed part.

[0009] In addition to one or more of the features disclosed above, or as an alternative, the drive assembly includes: a first driver and a first transmission member, the first transmission member being fixedly mounted on the second fixed part, the output end of the first driver being connected to the first transmission member in a transmission connection, and the movable end of the first transmission member being fixedly connected to the press-fit member.

[0010] In addition to one or more of the features disclosed above, or as an alternative, it also includes: a second positioning member, installed on the side of the first fixing part near the cylinder body, the second positioning member having a positioning hole, the cylinder liner being embedded in the positioning hole, and the first driver driving the press-fitting member being selectively inserted into the positioning hole.

[0011] In addition to one or more of the features disclosed above, or as an alternative, a plurality of first positioning members are provided, the plurality of first positioning members are installed at one end of the first fixing part near the cylinder body, and the plurality of first positioning members are arranged sequentially at intervals in the circumferential direction.

[0012] In addition to one or more of the features disclosed above, or as an alternative, it also includes: a mobile spreader, one end of which is fixedly connected to the second fixed part, and the other end of which is movably connected to an external movable guide rail.

[0013] In addition to one or more of the features disclosed above, or alternatively, the assembly mechanism has a first orientation;

[0014] The assembly mechanism also includes a first auxiliary handle and a second auxiliary handle, both of which are fixedly installed on the second fixed part. Both the first auxiliary handle and the second auxiliary handle are configured to adjust the relative position of the assembly mechanism and the cylinder in the first direction.

[0015] In addition to one or more of the features disclosed above, or as an alternative, the assembly mechanism has a second orientation;

[0016] The mobile lifting device and the fixed support are arranged sequentially in the second direction;

[0017] The assembly mechanism also includes a lifting assembly, which includes a converter, a second driver, and a second transmission component. The converter is installed between the mobile lifting device and the fixed bracket. The second driver is installed on the converter. The second transmission component is movably inserted through the converter and is fixedly connected to the second fixed part. The second transmission component is drivenly connected to the output end of the second driver. The second driver is configured to adjust the relative position of the assembly mechanism and the cylinder in the second direction.

[0018] In addition to one or more of the features disclosed above, or as an alternative, the lifting assembly also includes: a limiting member and a movable guide rail, the limiting member being mounted on the end of the second transmission member away from the fixed bracket in the second direction, the movable guide rail being disposed between the adapter and the second transmission member, and the movable portion of the movable guide rail being connected to the second transmission member.

[0019] In addition to one or more of the features disclosed above, or alternatively, the lifting assembly also includes: a connector and a control element, the control element being mounted on a fixed bracket via the connector, and the control element being electrically connected to a second drive.

[0020] In addition to one or more of the features disclosed above, or alternatively, it also includes: a pressure sensor and a display element, wherein the pressure sensor is disposed on the press fitting, the display element is mounted on a fixed bracket, and the pressure sensor and the display element are electrically or wirelessly connected.

[0021] One of the above technical solutions has the following advantages or beneficial effects: In this application, the connection and positioning between the assembly mechanism and the cylinder block is realized by the first positioning component, and the cylinder liner is pressed into the cylinder block by the driving component. The overall structure is simple and easy to operate, which improves the assembly efficiency between the cylinder liner and the cylinder block in the engine and reduces the production cost. At the same time, it is applicable to the assembly of cylinder liners and cylinder blocks of different models of engines, and has good compatibility and flexibility. Attached Figure Description

[0022] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural diagram of the assembly mechanism, cylinder block, and cylinder liner provided according to the embodiments of this application;

[0024] Figure 2 This is an exploded structural diagram of the assembly mechanism, cylinder block, and cylinder liner provided in the embodiments of this application;

[0025] Figure 3 This is a three-dimensional structural diagram of the assembly mechanism provided according to the embodiments of this application;

[0026] Figure 4 This is a structural diagram of the assembly mechanism according to the embodiments of this application, after concealing the movable lifting device and the lifting assembly;

[0027] Figure 5 This is a front view of the assembly mechanism provided according to the embodiments of this application, after concealing the movable lifting device and the lifting assembly;

[0028] Figure 6 This is a structural diagram from another perspective of the assembly mechanism provided in the embodiments of this application, after concealing the mobile lifting device and the lifting assembly.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Assembly mechanism; 110. Fixed bracket; 111. First fixing part; 112. Second fixing part; 121. First positioning component; 122. Second positioning component; 1221. Positioning hole; 130. Drive assembly; 131. First driver; 132. First transmission component; 140. Press-fit component; 150. Mobile lifting device; 161. First auxiliary handle; 162. Second auxiliary handle; 170. Lifting assembly; 171. Adapter; 172. Second driver; 173. Second transmission component; 174. Limiting component; 175. Movable guide rail; 176. Connecting component; 177. Control element; 180. Display element; 200. Cylinder block; 300. Cylinder liner. Detailed Implementation

[0031] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] To address the aforementioned problems, in the embodiments of this application, reference is made to... Figures 1 to 2 This application provides an assembly mechanism 100, which has a first direction X, a second direction Z, and a third direction Y that intersect each other. Exemplarily, in this application, the assembly mechanism 100 has a first direction X, a second direction Z, and a third direction Y that are perpendicular to each other. Here, "perpendicular" refers to a state where the angle formed by a line and a line, a line and a surface, or a surface and a surface is 89° to 91°.

[0036] Specifically, refer to Figures 1 to 2 The assembly mechanism 100 is configured to press the cylinder liner 300 of the engine into the cylinder block 200, so as to assemble the cylinder block 200 and the cylinder liner 300 into one unit.

[0037] The engine can be either a diesel engine or a gasoline engine, but is not limited to this.

[0038] To more clearly explain this solution, the specific structure of the assembly mechanism 100 is described below. For details, please refer to... Figures 1 to 3 The assembly mechanism 100 includes: a fixed bracket 110, a first positioning component 121, a drive assembly 130, and a press-fit component 140.

[0039] Specifically, the fixed bracket 110 is located on the side of the cylinder body 200, the first positioning member 121 is installed on the end of the fixed bracket 110 near the cylinder body 200, the fixed bracket 110 is fixedly connected to the cylinder body 200 through the first positioning member 121, the drive assembly 130 is installed on the fixed bracket 110, the press-fitting member 140 is connected to the drive assembly 130 in a transmission manner, and the drive assembly 130 is configured to drive the press-fitting member 140 to move, so as to control the press-fitting member 140 to press the cylinder liner 300 into the cylinder body 200.

[0040] The first positioning element 121 can be any positioning element. For example, in this application, the first positioning element 121 is a positioning bolt, which has a simple structure, is easy for workers to operate, and reduces production costs.

[0041] The press-fit component 140 may be made of a flexible material, or the outer surface of the press-fit component 140 may be covered with a flexible material layer, but is not limited thereto, so as to make flexible contact between the press-fit component 140 and the cylinder liner 300 and prevent the press-fit component 140 from damaging the cylinder liner 300.

[0042] Understandably, when it is necessary to assemble the cylinder liner 300 into the cylinder block 200, the operator first performs a preliminary assembly of the cylinder liner 300 and the cylinder block 200. The operator manually connects and positions the fixing bracket 110 to the cylinder block 200 using the first positioning component 121. After the connection and positioning are completed, the operator starts the control drive assembly 130 to drive the pressing component 140 to move, thereby controlling the pressing component 140 to contact the cylinder liner 300 and apply a thrust to the cylinder liner 300 to press the cylinder liner 300 into the cylinder block 200. After the pressing is completed, the drive assembly 130 drives the pressing component 140 to reset and close. The operator then manually separates the fixing bracket 110 from the cylinder block 200. The above actions are repeated to complete the pressing of the cylinder liners 300 into the subsequent cylinder bores of the cylinder block 200.

[0043] In this application, the first positioning component 121 is used to connect and position the assembly mechanism 100 and the cylinder block 200. The driving component 130 drives the pressing component 140 to press the cylinder liner 300 into the cylinder block 200. The overall structure is simple and easy to operate, which improves the assembly efficiency between the cylinder liner 300 and the cylinder block 200 in the engine and reduces the production cost. At the same time, it is applicable to the assembly of cylinder liners 300 and cylinder blocks 200 of different engine models, and has good compatibility and flexibility.

[0044] In some embodiments, refer to Figures 4 to 6 The fixed bracket 110 includes a first fixed part 111 and a second fixed part 112 connected to each other. The first fixed part 111 is disposed near the cylinder body 200 relative to the second fixed part 112. A first positioning member 121 is installed at one end of the first fixed part 111 near the cylinder body 200 so as to connect and position the assembly mechanism 100 with the cylinder body 200 using the first positioning member 121. The drive assembly 130 is installed on the second fixed part 112 so that the overall structure is reasonably designed and convenient for the assembly and operation of the staff.

[0045] The first fixing part 111 and the second fixing part 112 can be integrally formed, that is, the first fixing part 111 and the second fixing part 112 are a one-piece structure; alternatively, the first fixing part 111 and the second fixing part 112 can be separately provided and fixedly connected to each other. For example, the first fixing part 111 is fixedly connected to the second fixing part 112 by means of screwing or welding. This application does not impose specific limitations and can be specifically configured according to actual circumstances. For example, in this application, the first fixing part 111 and the second fixing part 112 are fixedly connected by screwing.

[0046] In some embodiments, multiple first positioning members 121 are provided, and the multiple first positioning members 121 are installed at one end of the first fixing part 111 near the cylinder body 200, and the multiple first positioning members 121 are arranged sequentially at intervals in the circumferential direction. This application provides multiple first positioning members 121 to connect and position the assembly mechanism 100 and the cylinder body 200, so that the connection and positioning between the assembly mechanism 100 and the cylinder body 200 is firm, which facilitates subsequent press-fitting operations.

[0047] In some embodiments, refer to Figures 4 to 6 The drive assembly 130 includes a first driver 131 and a first transmission member 132. The first transmission member 132 is fixedly installed on the second fixing part 112. The output end of the first driver 131 is connected to the first transmission member 132 in a transmission connection. The movable end of the first transmission member 132 is fixedly connected to the press-fitting part 140.

[0048] The first driver 131 can be either a drive motor or a drive cylinder, but is not limited to either.

[0049] The first transmission component 132 can be any one of a gear and rack structure, a transmission belt, a transmission chain, or a connecting rod structure, but is not limited to this.

[0050] Understandably, when it is necessary to assemble the cylinder liner 300 into the cylinder block 200, the first driver 131 is activated to drive the pressing component 140 to move, thereby controlling the pressing component 140 to contact the cylinder liner 300 and apply thrust to the cylinder liner 300 to press the cylinder liner 300 into the cylinder block 200. After the pressing is completed, the first driver 131 drives the pressing component 140 to reset and close. The pressing process does not require manual operation, has a high degree of automation, and improves the assembly efficiency between the cylinder liner 300 and the cylinder block 200 in the engine.

[0051] In some embodiments, in order to achieve positioning of the cylinder liner 300, in this application, reference is made to... Figures 4 to 6 The assembly mechanism 100 also includes: a second positioning member 122, which is installed on the side of the first fixing part 111 near the cylinder body 200. The second positioning member 122 has a positioning hole 1221, and the cylinder liner 300 is embedded in the positioning hole 1221. The first driver 131 drives the press-fitting member 140 to selectively pass through the positioning hole 1221.

[0052] The inner contour dimension of the positioning hole 1221 is greater than or equal to the outer contour dimension of the cylinder liner 300, so that the cylinder liner 300 can be fitted into the positioning hole 1221.

[0053] Understandably, this application uses the second positioning member 122 to position and fix the cylinder liner 300 by embedding it in the positioning hole 1221, so that the first driver 131 can drive the pressing member 140 to pass through the positioning hole 1221 and press the cylinder liner 300 into the cylinder block 200, thereby improving the assembly efficiency between the cylinder liner 300 and the cylinder block 200 in the engine.

[0054] In some embodiments, in order to adjust the position of the assembly mechanism 100, reference is made in the application. Figures 1 to 3 The assembly mechanism 100 also includes a movable lifting device 150, one end of which is fixedly connected to the second fixed part 112, and the other end of which is movably connected to an external movable guide rail.

[0055] When it is necessary to adjust the relative position between the assembly mechanism 100 and the cylinder 200, the operator can drive the movable lifting device 150 to move relative to the movable guide rail to adjust the relative position between the movable lifting device 150 and the cylinder 200, thereby adjusting the relative position between the assembly mechanism 100 and the cylinder 200, so that the assembly mechanism 100 can assemble the cylinder liner 300 and the cylinder 200 into one unit.

[0056] In some embodiments, refer to Figure 3 The assembly mechanism 100 further includes a first auxiliary handle 161 and a second auxiliary handle 162. The first auxiliary handle 161 and the second auxiliary handle 162 are both fixedly installed on the second fixing part 112. The first auxiliary handle 161 and the second auxiliary handle 162 are both configured to adjust the relative position of the assembly mechanism 100 and the cylinder 200 in the first direction X.

[0057] Understandably, the operator can apply driving force to the first auxiliary handle 161 and the second auxiliary handle 162 to drive the assembly mechanism 100 to move as a whole, so as to adjust the relative position of the assembly mechanism 100 and the cylinder body 200 in the first direction X, thereby facilitating the assembly operation of the assembly mechanism 100 and facilitating the assembly mechanism 100 to assemble the cylinder liner 300 and the cylinder body 200 into one unit.

[0058] In some embodiments, the movable lifting device 150 and the fixed support 110 are arranged sequentially in the second direction Z.

[0059] Specifically, in order to further adjust the position of the assembly mechanism 100, the application refers to... Figure 3 The assembly mechanism 100 also includes a lifting assembly 170, which is used to adjust the relative position of the assembly mechanism and the cylinder 200 in the second direction Z.

[0060] Specifically, the lifting assembly 170 includes: a converter 171, a second driver 172, and a second transmission component 173. The converter 171 is installed between the mobile lifting device 150 and the fixed bracket 110. The second driver 172 is installed on the converter 171. The second transmission component 173 is movably inserted through the converter 171 and is fixedly connected to the second fixed part 112. The second transmission component 173 is drivenly connected to the output end of the second driver 172. The second driver 172 is configured to adjust the relative position of the assembly mechanism 100 and the cylinder 200 in the second direction Z.

[0061] The second driver 172 can be either a drive motor or a drive cylinder, but is not limited to either.

[0062] The second transmission component 173 can be any one of a gear and rack structure, a transmission belt, a transmission chain, or a connecting rod structure, but is not limited to this.

[0063] Understandably, the second driver 172 is activated to drive the second transmission component 173 to move in the second direction Z, thereby driving the fixed bracket 110 to move in the second direction Z, thereby adjusting the relative position of the assembly mechanism 100 and the cylinder body 200 in the second direction Z, so as to facilitate the assembly operation of the assembly mechanism 100 and to facilitate the assembly mechanism 100 to assemble the cylinder liner 300 and the cylinder body 200 into one unit.

[0064] In some embodiments, refer to Figure 3 The lifting assembly 170 also includes a limiting member 174 and a movable guide rail 175. The limiting member 174 is installed at the end of the second transmission member 173 away from the fixed bracket 110 in the second direction Z. The limiting member 174 is used to cooperate with the movable lifting device 150 to form a limiting structure to limit the movement of the second transmission member 173, preventing the second transmission member 173 from driving the assembly mechanism 100 to move excessively, and ensuring the smooth operation of the assembly mechanism 100 as a whole. The movable guide rail 175 is disposed between the adapter 171 and the second transmission member 173. The movable part of the movable guide rail 175 is connected to the second transmission member 173 to guide the second transmission member 173 and prevent the second transmission member 173 from moving arbitrarily.

[0065] In some embodiments, refer to Figure 3 The lifting assembly 170 also includes a connector 176 and a control element 177. The control element 177 is mounted on the fixed bracket 110 via the connector 176 and is electrically connected to the second driver 172.

[0066] The control element 177 can be a control button, but is not limited to this.

[0067] Immediately, when it is necessary to control the fixed bracket 110 and the drive assembly 130 to move in the second direction Z, the operator controls the second driver 172 to start through the control element 177, so that the second driver 172 and the second transmission component 173 can drive the fixed bracket 110 and the drive assembly 130 to move in the second direction Z. The structure is simple and easy to operate.

[0068] In some embodiments, in order to achieve pressure monitoring during the assembly process, reference is made to... Figures 4 to 6 The assembly mechanism 100 also includes a pressure sensor (not shown) and a display element 180. The pressure sensor is disposed on the press-fit component 140, and the display element 180 is mounted on the fixed bracket 110. The pressure sensor and the display element 180 are electrically or wirelessly connected. The pressure sensor is used to monitor the pressure applied by the press-fit component 140 to the cylinder liner 300 in real time, and the display element 180 is used to display the curve changes of the real-time pressure values ​​of the cylinder block 200 and the cylinder liner 300 during the press-fitting process.

[0069] The pressure sensor can be any one of the following: piezoresistive pressure sensor, capacitive pressure sensor, or piezoelectric pressure sensor, but is not limited to this.

[0070] This application uses a pressure sensor to monitor the pressure applied by the press-fit component 140 to the cylinder liner 300 in real time, and a display element 180 to display the real-time pressure value curve changes of the cylinder body 200 and cylinder liner 300 during the press-fit process. This facilitates real-time monitoring and control of the pressure value of the cylinder body 200 and cylinder liner 300 during the press-fit process, prevents excessive pressure from damaging the components, and ensures the reliability of the press-fit operation.

[0071] In summary, the specific workflow of the assembly mechanism 100 in this application is as follows: When it is necessary to assemble the cylinder liner 300 of the engine into the cylinder block 200, the operator applies driving force to the first auxiliary handle 161 and the second auxiliary handle 162 to drive the assembly mechanism 100 to move as a whole, thereby adjusting the relative position of the assembly mechanism 100 and the cylinder block 200 in the first direction X. The operator then uses the control element 177 to control the second driver 172 to start, thereby driving the second transmission component 173 to move in the second direction Z, thereby driving the fixed bracket 110 to move in the second direction Z, thereby adjusting the assembly mechanism 100 and the cylinder block 200 in the second direction Z. After adjusting the relative position on Z, the operator first preliminarily assembles the cylinder liner 300 with the cylinder block 200. Using the first positioning component 121, the operator manually screws and positions the fixing bracket 110 to the cylinder block 200. After connection and positioning, the operator starts the first driver 131 to drive the pressing component 140 to move, controlling the pressing component 140 to contact the cylinder liner 300 and apply thrust to press the cylinder liner 300 into the cylinder block 200. Simultaneously, a pressure sensor monitors the pressure applied by the pressing component 140 to the cylinder liner 300 in real time, and the display element 180 displays the real-time pressure value curve changes between the cylinder block 200 and the cylinder liner 300 during the pressing process. After pressing, the drive assembly 130 drives the pressing component 140 to reset and close. The operator then manually separates the fixing bracket 110 from the cylinder block 200. This process is repeated to complete the pressing of the cylinder liners 300 for subsequent cylinder bores of the cylinder block 200.

[0072] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. An assembly mechanism, characterized in that, The assembly mechanism is configured to press-fit the cylinder liner of the engine into the cylinder body, and the assembly mechanism includes: a fixed bracket, a first positioning element, a drive assembly, and a pressing element; The fixed bracket is located on the side of the cylinder body. The first positioning member is installed on the fixed bracket near the cylinder body. The fixed bracket is fixedly connected to the cylinder body through the first positioning member. The drive assembly is installed on the fixed bracket. The pressing member is drivenly connected to the drive assembly. The drive assembly is configured to drive the pressing member to move, so as to control the pressing member to press the cylinder liner into the cylinder body.

2. The assembly mechanism as described in claim 1, characterized in that, The fixed bracket includes a first fixed part and a second fixed part connected to each other. The first fixed part is disposed near the cylinder body relative to the second fixed part. The first positioning member is installed at the end of the first fixed part near the cylinder body. The drive assembly is installed on the second fixed part.

3. The assembly mechanism as described in claim 2, characterized in that, The drive assembly includes: a first driver and a first transmission component, the first transmission component being fixedly installed on the second fixing part, the output end of the first driver being connected to the first transmission component in a transmission connection, and the movable end of the first transmission component being fixedly connected to the press-fit component.

4. The assembly mechanism as described in claim 3, characterized in that, Also includes: The second positioning component is installed on the side of the first fixing part near the cylinder body. The second positioning component has a positioning hole, and the cylinder liner is embedded in the positioning hole. The first driver drives the press-fit component to selectively pass through the positioning hole.

5. The assembly mechanism as described in claim 2, characterized in that, Multiple first positioning elements are provided, and the multiple first positioning elements are installed at one end of the first fixing part near the cylinder body, and the multiple first positioning elements are arranged at intervals in the circumferential direction.

6. The assembly mechanism as described in claim 2, characterized in that, Also includes: A mobile lifting device, one end of which is fixedly connected to the second fixed part, and the other end of which is movably connected to an external movable guide rail.

7. The assembly mechanism as described in claim 6, characterized in that, The assembly mechanism has a first orientation; The assembly mechanism further includes a first auxiliary handle and a second auxiliary handle, both of which are fixedly installed on the second fixing part. Both the first auxiliary handle and the second auxiliary handle are configured to adjust the relative position of the assembly mechanism and the cylinder in the first direction.

8. The assembly mechanism as described in claim 6, characterized in that, The assembly mechanism has a second orientation; The mobile lifting device and the fixed support are arranged sequentially in the second direction; The assembly mechanism further includes a lifting assembly, which includes an adapter, a second driver, and a second transmission component. The adapter is installed between the mobile hoist and the fixed bracket. The second driver is installed on the adapter. The second transmission component is movably inserted through the adapter and is fixedly connected to the second fixed part. The second transmission component is drively connected to the output end of the second driver. The second driver is configured to adjust the relative position of the assembly mechanism and the cylinder in the second direction.

9. The assembly mechanism as described in claim 8, characterized in that, The lifting assembly further includes a limiting member and a movable guide rail. The limiting member is installed at the end of the second transmission member away from the fixed bracket in the second direction. The movable guide rail is disposed between the adapter and the second transmission member, and the movable part of the movable guide rail is connected to the second transmission member.

10. The assembly mechanism as described in claim 8, characterized in that, The lifting assembly further includes a connector and a control element, wherein the control element is mounted on the fixed bracket via the connector and is electrically connected to the second driver.

11. The assembly mechanism as described in claim 6, characterized in that, Also includes: A pressure sensor and a display element are provided, wherein the pressure sensor is disposed on the press-fit component, and the display element is mounted on the fixed bracket, and the pressure sensor and the display element are electrically connected or wirelessly connected.

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