Assembly method and assembly tool for grinding unit of grinding vehicle

Abstract

The present invention discloses an assembly method and assembly tooling for a grinding unit of a grinding vehicle. The assembly method first uses a first assembly tooling to assemble a guide sleeve of the grinding unit and a connecting plate for installing a grinding wheel onto a grinding motor; then uses a second assembly tooling to fix a grinding unit bracket of the grinding unit, then assembles a guide post of the grinding unit on the grinding unit bracket, assembles the assembled grinding motor onto the guide post through the guide sleeve, then pre-installs a cylinder bracket on the guide post, installs a lifting cylinder on the cylinder bracket, and fixes the driving end of the lifting cylinder with the grinding motor; finally, adjusts the guide post to control the coaxiality of the guide post and the guide sleeve within a tolerance range, then fixes the cylinder bracket and the guide post, thereby completing the assembly of the grinding unit. The present invention can perform a pressure difference test on the second assembly tooling, so that it is not limited by space, and the guide post affecting the pressure difference can be adjusted at any time according to the pressure difference situation, so that the grinding unit of the grinding vehicle can be adjusted conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of rail grinding, and more specifically, to an assembling method of a grinding unit of a grinding vehicle. The present invention also relates to an assembling tool for the grinding unit of a grinding vehicle. Background Art

[0002] Rails are the carriers of running equipment of rail transit lines. At present, my country's urban transportation lines are busy. Rails are subjected to the alternating force between wheels and rails generated by the operation of rail vehicles for a long time, which causes damage, which can easily lead to rail breakage and vehicle operation accidents, seriously threatening the normal operation of rail transit. In order to avoid the impact of rail damage on driving safety, grinding rails to prevent rail cracks, expansion and wear is a major way to maintain and repair rails in the later stage.

[0003] At present, the grinding unit of the grinding trolley is often used to grind the rails. The grinding unit needs to be assembled before being installed on the body of the grinding trolley. In order to meet the grinding quality of the rails, the grinding trolley has strict requirements on the pressure difference of the grinding unit. The existing technology assembles the grinding unit to the grinding trolley before conducting the pressure difference test, which is more susceptible to space limitations and is inconvenient to adjust the assembly components of the grinding unit. Summary of the invention

[0004] In view of this, an object of the present invention is to disclose an assembling method of a grinding unit of a grinding vehicle, so as to facilitate adjustment of the grinding unit of the grinding vehicle.

[0005] Another object of the present invention is to disclose an assembly tool for a grinding unit of a grinding vehicle to facilitate adjustment of the grinding unit of the grinding vehicle.

[0006] In order to achieve the above object, the present invention discloses the following technical solution:

[0007] A method for assembling a grinding unit of a grinding vehicle comprises the following steps:

[0008] 1) Assemble the guide sleeve of the grinding unit and the connecting plate for mounting the grinding wheel onto the grinding motor using the first assembly tool;

[0009] 2) Fixing the grinding unit bracket of the grinding unit by using the second assembly tool, and then assembling the guide column of the grinding unit on the grinding unit bracket, assembling the grinding motor assembled in step 1) to the guide column through the guide sleeve, and then pre-installing the cylinder bracket on the guide column, installing the lifting cylinder on the cylinder bracket, and fixing the driving end of the lifting cylinder to the grinding motor;

[0010] 3) Adjust the guide post to control the coaxiality of the guide post and the guide sleeve within the tolerance range, and then fix the cylinder bracket and the guide post.

[0011] Preferably, in the above assembly method, there are two guide pillars, including at least one eccentric guide pillar, and the cylinder bracket overlaps the top ends of the two guide pillars;

[0012] The step 3) adjusts the coaxiality between the guide post and the guide sleeve by adjusting one of the eccentric guide posts.

[0013] It can be seen from the above technical scheme that the assembly method of the grinding unit of the grinding vehicle disclosed in the present invention first uses the first assembly tool to assemble the guide sleeve of the grinding unit and the connecting plate for installing the grinding wheel to the grinding motor; then uses the second assembly tool to fix the grinding unit bracket of the grinding unit, and then assembles the guide column of the grinding unit on the grinding unit bracket, assembles the assembled grinding motor to the guide column through the guide sleeve, and then pre-installs the cylinder bracket on the guide column, installs the lifting cylinder on the cylinder bracket, and fixes the driving end of the lifting cylinder to the grinding motor; finally, adjusts the guide column to control the coaxiality of the guide column and the guide sleeve within the tolerance range, and then fixes the cylinder bracket and the guide column to complete the assembly of the grinding unit.

[0014] In summary, the present invention can perform a pressure difference test on the second assembly tooling, which is not limited by space. According to the pressure difference situation, the guide column affecting the pressure difference can be adjusted at any time, which facilitates the adjustment of the grinding unit of the grinding vehicle.

[0015] In addition, the present invention only requires two assembly stations and completes the adjustment of the parallelism of the guide pillars during the assembly process, thereby improving assembly efficiency and reducing tooling costs.

[0016] The present invention also discloses an assembly tool for a grinding unit of a grinding vehicle, comprising a first assembly tool, used to assemble a guide sleeve of the grinding unit and a connecting plate for installing a grinding wheel onto a grinding motor; a second assembly tool, used to fix a grinding unit bracket of the grinding unit, and then assemble a guide column of the grinding unit on the grinding unit bracket, assemble the assembled grinding motor to the guide column through the guide sleeve, then pre-install a cylinder bracket on the guide column, install a lifting cylinder on the cylinder bracket, and fix the driving end of the lifting cylinder to the grinding motor; wherein, the guide column is adjusted at the second assembly tool to control the coaxiality of the guide column and the guide sleeve within a tolerance range, and then the cylinder bracket and the guide column are fixed.

[0017] Preferably, in the above-mentioned assembly tool, the first assembly tool comprises:

[0018] First assemble the bracket;

[0019] A motor fixing seat arranged on the first assembly bracket;

[0020] A clamping piece capable of cooperating with the motor fixing seat to clamp the grinding motor.

[0021] Preferably, in the above-mentioned assembly tool, the motor fixing seat has an arc-shaped positioning groove that is positioned and matched with the outer peripheral surface of the polishing motor; the clamping piece has an arc-shaped clamping groove that is positioned and matched with the outer peripheral surface of the polishing motor.

[0022] Preferably, in the above-mentioned assembly tool, the pressing member comprises:

[0023] A pressing plate having the arc-shaped pressing groove;

[0024] A stud used for fixing the pressing plate to the motor fixing seat, wherein the stud cooperates with an adjusting nut to achieve adjustable fixing height of the pressing plate.

[0025] Preferably, in the above-mentioned assembly tool, the motor fixing seat is provided with a plurality of fixing holes for installing the studs, which are arranged along the length direction of the arc-shaped positioning groove.

[0026] Preferably, in the above-mentioned assembly tool, the second assembly tool comprises:

[0027] A second assembly bracket;

[0028] The grinding unit seat of the grinding unit bracket is fixed by a fixing piece, and the grinding unit seat is arranged on the second assembling bracket.

[0029] Preferably, in the above-mentioned assembly tool, the grinding unit seat includes:

[0030] A bottom positioning frame for positioning the bottom mounting feet of the grinding unit bracket;

[0031] Four positioning columns are arranged on the bottom positioning frame, and the positioning columns are used to limit the periphery of the grinding unit bracket.

[0032] Preferably, in the above-mentioned assembly tool, the fixing member comprises:

[0033] A positioning bolt capable of abutting against the top surface of the grinding unit bracket, wherein the positioning bolt passes through the top end of the positioning column in a horizontal direction in an axially adjustable manner through a locking nut.

[0034] It can be seen from the above technical scheme that the assembly tool of the grinding unit of the grinding vehicle disclosed in the present invention utilizes a first assembly tool to assemble the guide sleeve of the grinding unit and the connecting plate for installing the grinding wheel to the grinding motor; utilizes a second assembly tool to fix the grinding unit bracket of the grinding unit, and then assembles the guide column of the grinding unit on the grinding unit bracket, assembles the assembled grinding motor to the guide column through the guide sleeve, and then pre-installs the cylinder bracket on the guide column, installs the lifting cylinder on the cylinder bracket, and fixes the driving end of the lifting cylinder to the grinding motor; wherein, the guide column is adjusted at the second assembly tool to control the coaxiality of the guide column and the guide sleeve within the tolerance range, and then fixes the cylinder bracket and the guide column.

[0035] In summary, the present invention can perform a pressure difference test on the second assembly tooling, which is not limited by space. According to the pressure difference situation, the guide column affecting the pressure difference can be adjusted at any time, which facilitates the adjustment of the grinding unit of the grinding vehicle.

[0036] In addition, the present invention only requires two assembly stations and completes the adjustment of the parallelism of the guide pillars during the assembly process, thereby improving assembly efficiency and reducing tooling costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of a grinding unit of a grinding vehicle disclosed in an embodiment of the present invention;

[0039] Figure 2 is a front view of a first assembly tool disclosed in an embodiment of the present invention;

[0040] Figure 3 is a side view of a first assembly tool disclosed in an embodiment of the present invention;

[0041] Figure 4 is a top view of a first assembly tool disclosed in an embodiment of the present invention;

[0042] Figure 5 is a schematic diagram of the three-dimensional structure of the second assembly tool disclosed in an embodiment of the present invention;

[0043] Figure 6 is a side view of a second assembly tool disclosed in an embodiment of the present invention;

[0044] Figure 7It is a schematic diagram of the three-dimensional structure of the grinding unit seat disclosed in the embodiment of the present invention. DETAILED DESCRIPTION

[0045] The embodiment of the invention discloses an assembling method and an assembling tool for a grinding unit of a grinding vehicle, so as to facilitate adjustment of the grinding unit of the grinding vehicle.

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Please refer to the attached Figure 1 The grinding unit of the grinding vehicle includes a grinding unit bracket 06, a grinding motor 01, a connecting plate 07, a cylinder bracket 02, a lifting cylinder 03, a guide sleeve 04 and a guide column 05; the guide column 05 is arranged on the grinding unit bracket 06, the cylinder bracket 02 is used to install the lifting cylinder 03, the guide sleeve 04 can be slidably sleeved on the guide column 05, the lifting cylinder 03 is arranged on the cylinder bracket 02, the grinding motor 01 is connected to the driving end of the lifting cylinder 03 and the guide sleeve 04, and the grinding motor 01 is connected to the grinding wheel through the connecting plate 07.

[0048] The grinding motor 01 cooperates with the guide column 05 on the grinding unit bracket 06 through the guide sleeve 04. The guide sleeve 04 moves axially along the guide column 05 through the extension and retraction of the lifting cylinder 03, thereby cooperating with the rotation of the grinding motor 01 to realize the downward pressure grinding operation of the grinding wheel.

[0049] The assembling method of the grinding unit of the grinding vehicle disclosed in the embodiment of the present invention comprises the following steps:

[0050] S1, assemble the guide sleeve 04 of the grinding unit and the connecting plate 07 for mounting the grinding wheel onto the grinding motor 01 using the first assembly tool;

[0051] S2, fix the grinding unit bracket 06 of the grinding unit by using the second assembly tool, then assemble the guide column 05 of the grinding unit on the grinding unit bracket 06, assemble the grinding motor 01 assembled in step S1 to the guide column 05 through the guide sleeve 04, then pre-install the cylinder bracket 02 on the guide column 05, install the lifting cylinder 03 on the cylinder bracket 02, and make the driving end of the lifting cylinder 03 fixedly connected to the grinding motor 01;

[0052] S3. Adjust the guide column 05 to control the coaxiality between the guide column 05 and the guide sleeve 04 within the tolerance range, and then fix the cylinder bracket 02 and the guide column 05.

[0053] The assembly method of the present invention first uses a first assembly tool to assemble the guide sleeve 04 of the grinding unit and the connecting plate 07 for installing the grinding wheel to the grinding motor 01; then uses a second assembly tool to fix the grinding unit bracket 06 of the grinding unit, and then assembles the guide column 05 of the grinding unit on the grinding unit bracket 06, assembles the assembled grinding motor 01 to the guide column 05 through the guide sleeve 04, then pre-installs the cylinder bracket 02 on the guide column 05, installs the lifting cylinder 03 on the cylinder bracket 02, and fixes the driving end of the lifting cylinder 03 to the grinding motor 01; finally, adjusts the guide column 05 to control the coaxiality of the guide column 05 and the guide sleeve 04 within the tolerance range, and finally fixes the cylinder bracket 02 and the guide column 05, thereby completing the assembly of the grinding unit.

[0054] In summary, the present invention can perform a pressure difference test on the second assembly tooling, which is not limited by space. According to the pressure difference, the guide column 05 that affects the pressure difference can be adjusted at any time, which facilitates the adjustment of the grinding unit of the grinding vehicle.

[0055] In addition, the present invention only requires two assembly stations, and the parallelism adjustment of the guide pillar 05 is completed during the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.

[0056] In order to simplify the structure, there are two guide pillars 05, including at least one eccentric guide pillar, and the oil cylinder bracket 02 overlaps the top of the two guide pillars 05; step S3 adjusts the coaxiality of the guide pillar 05 and the guide sleeve 04 by adjusting one of the eccentric guide pillars. The present application makes at least one of the guide pillars 05 an eccentric guide pillar, which is convenient for adjusting the parallelism of the two guide pillars 05 and the coaxiality of the guide pillar 05 and the guide sleeve 04. Of course, the above-mentioned guide pillar 05 can also achieve the same purpose of adjusting the parallelism of the guide pillar 05 and the coaxiality with the guide sleeve 04 by adjusting and coordinating with the mounting hole on the grinding unit bracket 06.

[0057] Please refer to the attached Figure 2-7 The embodiment of the present invention further discloses an assembly tool for a grinding unit of a grinding vehicle, comprising a first assembly tool for assembling a guide sleeve 04 of the grinding unit and a connecting plate 07 for installing a grinding wheel onto a grinding motor 01; a second assembly tool for fixing a grinding unit bracket 06 of the grinding unit, and then assembling a guide column 05 of the grinding unit on the grinding unit bracket 06, assembling the assembled grinding motor 01 onto the guide column 05 through the guide sleeve 04, then pre-installing a cylinder bracket 02 on the guide column 05, installing a lifting cylinder 03 on the cylinder bracket 02, and fixing the driving end of the lifting cylinder 03 to the grinding motor 01; wherein, the guide column 05 is adjusted at the second assembly tool to control the coaxiality of the guide column 05 and the guide sleeve 04 within the tolerance range, and then fixing the cylinder bracket 02 and the guide column 05.

[0058] The assembly tooling of the grinding unit of the grinding vehicle disclosed in the present invention utilizes a first assembly tooling to assemble a guide sleeve 04 of the grinding unit and a connecting plate 07 for installing a grinding wheel onto a grinding motor 01; utilizes a second assembly tooling to fix a grinding unit bracket 06 of the grinding unit, and then assembles a guide column 05 of the grinding unit onto the grinding unit bracket 06, assembles the assembled grinding motor 01 onto the guide column 05 via the guide sleeve 04, then pre-installs a cylinder bracket 02 on the guide column 05, installs a lifting cylinder 03 on the cylinder bracket 02, and fixes the driving end of the lifting cylinder 03 to the grinding motor 01; wherein, the guide column 05 is adjusted at the second assembly tooling to control the coaxiality of the guide column 05 and the guide sleeve 04 within a tolerance range, and then fixes the cylinder bracket 02 and the guide column 05.

[0059] In summary, the present invention can perform a pressure difference test on the second assembly tooling, which is not limited by space. According to the pressure difference, the guide column 05 that affects the pressure difference can be adjusted at any time, which facilitates the adjustment of the grinding unit of the grinding vehicle.

[0060] In addition, the present invention only requires two assembly stations, and the parallelism adjustment of the guide pillar 05 is completed during the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.

[0061] like Figure 2-4 As shown, the first assembly tool includes a first assembly bracket 1; a motor fixing seat 2 arranged on the first assembly bracket 1; and a clamping piece that can cooperate with the motor fixing seat 2 to clamp the grinding motor 01. During assembly, the grinding motor 01 is first placed horizontally (i.e., the axial direction is along the horizontal direction) on the motor fixing seat 2, and then the grinding motor 01 is pressed against the motor fixing seat 2 from above by the clamping piece, so as to ensure the stability of the fixing of the grinding motor 01, and then the guide sleeve 04 and the connecting plate 07 are installed. Of course, the first assembly tool can also only include the clamping piece to fix the grinding motor 01 bracket on the first assembly bracket 1.

[0062] In order to improve the fixing strength of the electric motorcycle motor, the motor fixing seat 2 has an arc-shaped positioning groove that is positioned and matched with the outer peripheral surface of the grinding motor 01; the pressing piece has an arc-shaped pressing groove that is positioned and matched with the outer peripheral surface of the grinding motor 01. The present invention uses the arc-shaped positioning groove and the arc-shaped pressing groove to match the outer peripheral surface of the grinding motor 01, and the fixing effect is better. Of course, the present application can also only set the arc-shaped positioning groove or the arc-shaped pressing groove.

[0063] In order to simplify the structure, the clamping member includes a clamping plate 4 with an arc-shaped clamping groove; a stud 3 for fixing the clamping plate 4 to the motor fixing seat 2, and the stud 3 cooperates with the adjusting nut to achieve adjustable fixing height of the clamping plate 4. In this embodiment, the clamping plate 4 is first clamped on the top of the grinding motor 01, and then the clamping plate 4 is fixedly connected to the motor fixing seat 2 by the cooperation of the adjusting nut and the stud 3, and the length of the stud 3 between the clamping plate 4 and the motor fixing seat 2 can be adjusted by the adjusting nut, which can be applicable to grinding motors 01 of different specifications, improves versatility, and facilitates assembly. Of course, the clamping plate 4 can also be fixed on the first assembly bracket 1, and the clamping member can also be other structures, such as an elastic fastening belt, a locking clamp, etc.

[0064] In order to further optimize the above technical solution, the motor fixing seat 2 is provided with multiple groups of fixing holes 5 for installing the studs 3, which are arranged along the length direction of the arc-shaped positioning groove. Specifically, when the pressure plate 4 is fixed, it is necessary to cooperate with four studs 3, which are arranged in two groups, each group including two fixing holes 5 arranged oppositely. The present invention can make the studs 3 cooperate with the two groups of fixing holes 5 at the corresponding positions according to the grinding motors 01 of different axial lengths, further improving the versatility.

[0065] like Figure 5-7 As shown, the second assembly tool includes a second assembly bracket 6; a grinding unit seat 7 of the grinding unit bracket 06 is fixed by a fixing member, and the grinding unit seat 7 is arranged on the second assembly bracket 6. The present application fixes the grinding unit bracket 06 by the grinding unit seat 7, which is convenient for assembly. Of course, the present invention can also directly set a mounting portion such as a mounting hole or a mounting protrusion for mounting the grinding unit bracket 06 on the second assembly bracket 6.

[0066] It should be noted that the second assembly tool and the assembly platform height of the second assembly tool of the present application are fixed operating heights selected through practice, with a simple structure and low cost.

[0067] Preferably, the grinding unit seat 7 includes a bottom positioning frame 71 for positioning the bottom mounting feet of the grinding unit bracket 06; four positioning columns 72 are arranged on the bottom positioning frame 71, and the positioning columns 72 are used to limit the periphery of the grinding unit bracket 06. During assembly, firstly, the bottom mounting feet of the grinding unit bracket 06 are positioned at the four connecting corners of the bottom positioning frame 71 respectively, so as to position the bottom of the grinding unit bracket 06, and the periphery of the grinding unit bracket 06 is positioned by the positioning columns 72, thereby realizing the double positioning of the grinding unit bracket 06, and the positioning effect is better. Of course, the present application can also realize the positioning of the grinding unit bracket 06 by opening a positioning hole on the grinding unit seat 7.

[0068] In order to facilitate assembly, the fixing member includes a positioning bolt 8 that can abut against the top surface of the grinding unit bracket 06. The positioning bolt 8 passes through the top of the positioning column 72 in an axially adjustable manner in the horizontal direction through a locking nut. The positioning bolt 8 of this embodiment can not only position the top surface of the grinding unit bracket 06, but also can cooperate with the grinding unit seat 7 to fix the grinding unit bracket 06, and the fixing strength of the grinding unit bracket 06 is good. Alternatively, the above-mentioned fixing member can also be other structures, such as a fixing bolt passing through the grinding unit bracket 06.

[0069] Specifically, the positioning bolt 8 is a hexagonal head bolt, and the locking nut is a hexagonal nut.

[0070] The assembly process of the present invention on the second assembly tool is as follows:

[0071] First, clamp the grinding unit bracket 06 to the bottom positioning frame 71 of the grinding unit seat 7, and then adjust the length of the hexagonal head bolt extending to the top surface of the grinding unit bracket 06 by adjusting the hexagonal nut to fix the grinding unit bracket 06. Then assemble the two guide pillars 05, and then assemble the assembled grinding motor 01 to the guide pillar 05 through the guide sleeve 04, pre-install the cylinder bracket 02, the lifting cylinder 03, and adjust one of the eccentric guide pillars to adjust the coaxiality between the two guide sleeves 04 and the guide pillar 05 so that it is controlled within the tolerance range to ensure that under the actuation of the lifting cylinder 03, the guide pillar 05 slides freely on the guide sleeve 04 without getting stuck, thereby ensuring that the pressure difference of the grinding motor 01 lifting and pressing down the grinding wheel is within the range of technical requirements, thereby meeting the quality requirements of grinding. After adjusting the coaxiality between the guide pillar 05 and the guide sleeve 04, tighten the fastening bolts on the grinding unit bracket 06 to fix the position of the guide pillar 05 and complete the final assembly.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembly tool for a grinding unit of a grinding vehicle, characterized in that: include: A first assembly tool, used for assembling the guide sleeve (04) of the grinding unit and the connecting plate (07) for mounting the grinding wheel onto the grinding motor (01); The second assembly tool is used to fix the grinding unit bracket (06) of the grinding unit, and then assemble the guide column (05) of the grinding unit on the grinding unit bracket (06), assemble the assembled grinding motor (01) to the guide column (05) through the guide sleeve (04), and then pre-install the cylinder bracket (02) on the guide column (05), install the lifting cylinder (03) on the cylinder bracket (02), and make the driving end of the lifting cylinder (03) fixedly connected to the grinding motor (01); wherein the guide column (05) is adjusted at the second assembly tool to control the coaxiality of the guide column (05) and the guide sleeve (04) within a tolerance range, and then the oil cylinder bracket (02) and the guide column (05) are fixed; The first assembly tool comprises: A first assembly bracket (1); A motor fixing seat (2) arranged on the first assembly bracket (1); A clamping piece capable of cooperating with the motor fixing seat (2) to clamp the grinding motor (01); The second assembly tool comprises: A second assembly bracket (6); A grinding unit seat (7) of the grinding unit bracket (06) is fixed by a fixing member, wherein the grinding unit seat (7) is arranged on the second assembly bracket (6); The grinding unit seat (7) comprises: A bottom positioning frame (71) for positioning the bottom mounting feet of the polishing unit bracket (06); Four positioning columns (72) are arranged on the bottom positioning frame (71), and the positioning columns (72) are used to limit the periphery of the grinding unit bracket (06).

2. The assembly tool according to claim 1, characterized in that: The motor fixing seat (2) has an arc-shaped positioning groove that is positioned and matched with the outer peripheral surface of the grinding motor (01); the pressing piece has an arc-shaped pressing groove that is positioned and matched with the outer peripheral surface of the grinding motor (01).

3. The assembly tool according to claim 2, characterized in that: The pressing member comprises: A pressing plate (4) having the arc-shaped pressing groove; The stud (3) is used to fix the pressing plate (4) on the motor fixing seat (2); the stud (3) cooperates with the adjusting nut to achieve adjustable fixing height of the pressing plate (4).

4. The assembly tool according to claim 3, characterized in that: The motor fixing seat (2) is provided with a plurality of fixing holes (5) for installing the studs (3), which are arranged along the length direction of the arc-shaped positioning groove.

5. The assembly tool according to claim 1, characterized in that: The fixing member comprises: A positioning bolt (8) capable of abutting against the top surface of the grinding unit bracket (06), wherein the positioning bolt (8) passes through the top of the positioning column (72) in an axially adjustable manner along the horizontal direction via a locking nut.

6. A method for assembling a grinding unit of a grinding vehicle, using the assembly tool according to any one of claims 1 to 5, characterized in that: The following steps are involved: 1) Assembling the guide sleeve (04) of the grinding unit and the connecting plate (07) for mounting the grinding wheel onto the grinding motor (01) using a first assembly tool; 2) Using a second assembly tool to fix the grinding unit bracket (06) of the grinding unit, then assembling the guide column (05) of the grinding unit on the grinding unit bracket (06), assembling the grinding motor (01) assembled in step 1) onto the guide column (05) through the guide sleeve (04), then pre-installing the cylinder bracket (02) on the guide column (05), installing the lifting cylinder (03) on the cylinder bracket (02), and fixing the driving end of the lifting cylinder (03) to the grinding motor (01); 3) adjusting the guide column (05) to control the coaxiality of the guide column (05) and the guide sleeve (04) within the tolerance range, and then fixing the cylinder bracket (02) and the guide column (05); There are two guide pillars (05), including at least one eccentric guide pillar, and the cylinder bracket (02) overlaps the top ends of the two guide pillars (05); The step 3) adjusts the coaxiality between the guide post (05) and the guide sleeve (04) by adjusting one of the eccentric guide posts.

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