An adjustable press-fit device

Abstract

This utility model discloses an adjustable press-fit device, including a movable support fixture and a rubber node pressing fixture. The rubber node pressing fixture is assembled and fixed on the working platform of the press. One end of the antenna beam extends into the rubber node pressing fixture and is supported by a first positioning seat of the rubber node pressing fixture. The other end of the antenna beam extends outside the press and is supported by a second positioning seat of the movable support fixture. The movable support fixture has an adjustment mechanism, and the height of the second positioning seat is adjusted by the adjustment mechanism. The horizontality of the antenna beam is measured by an external angle gauge. The press-fit device of this utility model presses the pressing nodes at both ends of the antenna beam using a step-by-step pressing process. It is designed with a movable support fixture that can support the end of the ultra-long antenna beam away from the press, so that it can adapt to the pressing requirements of antenna beams of different lengths. With the help of an angle gauge for leveling, the pressing accuracy is greatly improved, and problems such as loosening and deformation caused by improper pressing are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of rail passenger vehicle manufacturing technology, and in particular to an adjustable press-in device. Background Technology

[0002] In the field of rail passenger vehicles, different types of rail vehicles, such as high-speed trains and urban rail vehicles, have varying antenna beam lengths due to differences in frame width. Taking an overseas project as an example, the total length of the antenna beam assembled on the bogie reaches 2198mm, exceeding conventional dimensions. The node pressing operation on this antenna beam requires extremely high positioning accuracy and compatibility with the pressing equipment. Existing pressing processes are mainly designed for other vehicle structures and lack specificity for this long and uniquely structured antenna beam.

[0003] Meanwhile, due to the lack of experience with similar models, it is difficult to accurately control the pressing force and depth during the node pressing process, which can easily lead to inadequate pressing or over-pressing. This will not only affect the overall performance of the antenna beam and the assembly quality of the bogie, but also increase the defect rate, reduce production efficiency, and increase costs.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop an adjustable pressurization device. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable press-fit device that presses the press-fit nodes at both ends of the antenna beam using a step-by-step press-fit process. It is also designed with a movable support fixture that can support the end of the ultra-long antenna beam away from the press machine, so that it can adapt to the press-fit requirements of antenna beams of different lengths. With the help of an angle gauge for leveling, the press-fit accuracy is greatly improved, and problems such as loosening and deformation caused by improper press-fit are effectively avoided.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses an adjustable press-fit device, which is divided into:

[0008] Movable support fixtures and rubber joint pressing fixtures used in conjunction with presses;

[0009] The rubber node pressing fixture is assembled and fixed on the working platform of the press, and the pressure mechanism of the press is connected to the rubber node pressing fixture;

[0010] One end of the antenna beam extends into the rubber node pressing fixture of the press machine, and this end is supported on the first positioning seat of the rubber node pressing fixture.

[0011] The other end of the antenna beam extends to the outside of the press and is supported by the second positioning seat of the movable support fixture;

[0012] The movable support fixture has an adjustment mechanism connected to the second positioning seat, and the height of the second positioning seat is adjusted by the adjustment mechanism.

[0013] The horizontality of the antenna beam is measured by an external angle meter.

[0014] Furthermore, the movable support fixture includes:

[0015] Mobile base;

[0016] A support cylinder is disposed on the movable base, and the adjustment mechanism is installed at the upper end of the support cylinder; and

[0017] The second positioning seat is disposed at the upper end of the adjustment mechanism. The second positioning seat has a second positioning groove that can accommodate and support the antenna beam. The antenna beam can be embedded in the second positioning groove and supported on the movable support fixture near its end.

[0018] Furthermore, the movable base includes wheel seats and traveling wheels mounted on the bottom of the wheel seats;

[0019] The wheel seat has three extension arms extending outwards, and the three extension arms are evenly distributed around the circumference of the wheel seat. The walking wheel is provided at the bottom of the extension arms.

[0020] Furthermore, the support cylinder is fixed at the center position of the wheel seat;

[0021] The adjustment mechanism includes:

[0022] An adjustment mechanism mounting plate fixed to the upper end of the support cylinder;

[0023] An adjusting cylinder is fixed to the mounting plate of the adjusting mechanism, and a driving cylinder is provided on the side of the adjusting cylinder in communication with it. The adjusting cylinder is arranged in a vertical direction, and the driving cylinder is arranged in a horizontal direction.

[0024] An adjusting screw is arranged along the axial direction of the adjusting cylinder, and a rotating body is threadedly connected to the adjusting screw inside the adjusting cylinder. A driving assembly is provided along the axial direction of the driving cylinder. The driving assembly drives the rotating body to rotate, and the rotation of the rotating body drives the adjusting screw to move along the axial direction of the adjusting cylinder.

[0025] The upper end of the adjusting screw is connected to the second positioning seat via a mounting plate.

[0026] Furthermore, both the upper and lower ends of the rotating body are rotatably connected to the inner wall of the adjusting cylinder via bearings;

[0027] The drive assembly includes a handwheel located outside the drive cylinder and a drive rod connected to the handwheel and located inside the drive cylinder;

[0028] The drive rod is connected to the rotating body in a transmission manner to drive the rotating body to rotate.

[0029] Furthermore, the drive rod and the rotating body adopt a worm gear structure.

[0030] Furthermore, a through hole is machined at the center of the wheel seat for the adjusting screw to pass through.

[0031] Furthermore, the rubber node pressing fixture includes:

[0032] Node pressing fixture base;

[0033] A first positioning seat is fixed to one side of the node pressing fixture base, and the first positioning seat is assembled and fixed on the node pressing fixture base by a positioning plate;

[0034] The other side of the node pressing fixture base has a pressing structure that cooperates with the pressure mechanism of the press.

[0035] The antenna beam is supported near its end on the first positioning seat, and the press-fit node of the antenna beam extends into the press-fit structure.

[0036] Furthermore, the press-fit structure includes:

[0037] The guide rods are fixed to the node pressing fixture base by the guide rod base, and there are two guide rods, which are arranged at intervals on the node pressing fixture base.

[0038] A press plate that slides in conjunction with the two guide rods, the press plate having a press part at its center, the press part engaging with the press joint of the antenna beam;

[0039] A support ring is fixed at the position corresponding to the position of the pressing part on the node pressing fixture base. The support ring is used to support the outer periphery of the pressing node part of the antenna beam.

[0040] Furthermore, the press plate has handles at both ends.

[0041] In the above technical solution, the adjustable press-fit device provided by this utility model has the following beneficial effects:

[0042] The press-fit device of this utility model presses the press-fit nodes at both ends of the antenna beam in a step-by-step press-fit process. It is designed with a movable support fixture that can support the end of the ultra-long antenna beam away from the press machine, so that it can adapt to the press-fit requirements of antenna beams of different lengths. With the help of an angle gauge for leveling, the press-fit accuracy is greatly improved, and problems such as loosening and deformation caused by improper press-fit are effectively avoided. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0044] Figure 1 This is a structural schematic diagram of the working state of an adjustable press-fit device disclosed in an embodiment of the present utility model;

[0045] Figure 2 This is an exploded view of the working state of an adjustable pressurized device disclosed in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of a movable support fixture for an adjustable press-fit device disclosed in an embodiment of this utility model;

[0047] Figure 4 This is a structural cross-sectional view of a movable support fixture for an adjustable press-fit device disclosed in an embodiment of this utility model;

[0048] Figure 5 This is a schematic diagram of the rubber node pressing fixture of a movable support fixture for an adjustable press-fit device disclosed in an embodiment of this utility model.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Antenna beam; 11. Node;

[0051] 1. Movable support fixture; 2. Rubber joint pressing fixture;

[0052] 101. Wheel base; 102. Extending arm; 103. Traveling wheel; 104. Support cylinder; 105. Adjustment mechanism mounting plate; 106. Adjustment mechanism; 107. Second positioning seat; 108. Mounting plate;

[0053] 10101, Through hole;

[0054] 10601, Adjusting screw; 10602, Handwheel; 10603, Drive rod; 10604, Adjusting cylinder; 10605, Rotating body; 10606, Bearing;

[0055] 10701, First positioning slot;

[0056] 201. Node pressing fixture base; 202. First positioning seat; 203. Pressing structure; 204. Support ring;

[0057] 20201, First positioning slot; 20202, Positioning plate;

[0058] 20301, guide rod; 20302, guide rod base; 20303, press plate; 20304, guide ring; 20305, press part; 20306, handle. Detailed Implementation

[0059] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0060] See Figures 1 to 3 As shown;

[0061] This embodiment provides an adjustable press-fit device, which is divided into:

[0062] The movable support fixture 1 and the rubber node pressing fixture 2 used in conjunction with the press;

[0063] The rubber node pressing fixture 2 is assembled and fixed on the working platform of the press, and the pressure mechanism of the press is connected to the rubber node pressing fixture 2;

[0064] One end of the antenna beam 10 extends into the rubber node pressing fixture 2 of the press machine, and this end is supported on the first positioning seat 202 of the rubber node pressing fixture 2.

[0065] The other end of the antenna beam 10 extends to the outside of the press and is supported by the second positioning seat 107 of the movable support fixture 1;

[0066] The movable support fixture 1 has an adjustment mechanism 106 connected to the second positioning seat 107, and the height of the second positioning seat 107 is adjusted by the adjustment mechanism 106.

[0067] The levelness of the antenna beam 10 is measured by an external angle meter (not shown).

[0068] See Figure 1 and Figure 2As shown, specifically, this embodiment discloses an auxiliary tooling suitable for pressing rubber nodes onto ultra-long antenna beams or antenna beams 10 of different specifications. It consists of the aforementioned movable support tooling 1 and rubber node pressing tooling 2. The rubber node pressing tooling 2 is used in conjunction with an existing press. The rubber node pressing tooling 2 is fixed at the corresponding position of the press mechanism of the press, and the corresponding position of the rubber node pressing tooling 2 is moved by the press mechanism to press the rubber nodes 11 onto the antenna beam 10. Secondly, since some antenna beams 10 have different lengths or are ultra-long, the other end of such antenna beams 10 will extend to the outside of the press and be far away. Therefore, this embodiment designs the movable support tooling 1 to support and adjust this end.

[0069] In this embodiment, the movable support fixture 1 uses the second positioning seat 107 to support one end of the antenna beam 10. Simultaneously, the movable support fixture 1 also integrates an adjustment mechanism 106, which can be used to adjust the height of that end to ensure the antenna beam 10 remains horizontal during support. More specifically, this embodiment also requires the use of an angle gauge to measure and ensure the horizontality of the antenna beam 10.

[0070] Based on the design of the mobile support fixture 1 and the rubber node pressing fixture 2 in this embodiment, it can meet the pressing operation of the node 11 of the antenna beam 10 with different specifications and lengths, and adopts a step-by-step operation with a novel process.

[0071] See Figure 3 and Figure 4 As shown, the movable support fixture 1 of this embodiment includes: a movable base; a support cylinder 104 disposed on the movable base, with an adjustment mechanism 106 installed on the upper end of the support cylinder 104; and a second positioning seat 107 disposed on the upper end of the adjustment mechanism 106. The second positioning seat 107 has a second positioning groove 10701 that can accommodate and support the antenna beam 10. The antenna beam 10 can be embedded in the second positioning groove 10701 and supported on the movable support fixture 1 near its end.

[0072] From an overall analysis, the mobile support fixture 1 in this embodiment mainly includes three main mechanisms: a mobile base, an adjustment mechanism 106, and a second positioning seat 107. Meanwhile, the mobile base uses multiple wheels 103 as moving parts to facilitate the movement of the mobile support fixture 1. More preferably, a wheel structure with a braking function is used, which can not only facilitate the movement of the device, but also position it at the target location.

[0073] In addition, based on the overall structure of the above-mentioned mobile support fixture 1, this embodiment further defines the structure of the mobile base, specifically: the mobile base of this embodiment includes a wheel seat 101 and a walking wheel 103 installed at the bottom of the wheel seat 101;

[0074] The wheel base 101 has three extension arms 102 extending outward, and the three extension arms 102 are evenly distributed around the circumference of the wheel base 101. The bottom of the extension arms 102 is provided with a traveling wheel 103.

[0075] The mobile base of this embodiment is based on the wheel base 101. This application takes the example of the wheel base 101 having three extension arms 102, and each extension arm 102 having a walking wheel 103 connected to its bottom as a further explanation and description. Similarly, the mobile base of this application can also be designed with other structures, and can also integrate different numbers of walking wheels 103. Regardless of the structure, its main purpose is to support other upper mechanisms and meet the basic requirements of movement and positioning, which will not be elaborated here.

[0076] Preferably, in this embodiment, the support cylinder 104 is fixed at the center position of the wheel seat 101;

[0077] The adjustment mechanism 106 in this embodiment includes:

[0078] An adjustment mechanism mounting plate 105 is fixed to the upper end of the support cylinder 104;

[0079] An adjusting cylinder 10604 is fixed to the adjusting mechanism mounting plate 105, and a driving cylinder is provided on the side of the adjusting cylinder 10604 in communication with it. The adjusting cylinder 10604 is arranged in the vertical direction, and the driving cylinder is arranged in the horizontal direction.

[0080] An adjusting screw 10601 is arranged along the axial direction of the adjusting cylinder 10604, and a rotating body 10605 is threadedly connected to the adjusting screw 10601 inside the adjusting cylinder 10604. A driving assembly is arranged along the axial direction of the driving cylinder. The driving assembly and the rotating body 10605 are driven to rotate the rotating body 10605. The rotation of the rotating body 10605 drives the adjusting screw 10601 to move along the axial direction of the adjusting cylinder 10604.

[0081] The upper end of the adjusting screw 10601 is connected to the second positioning seat 107 via the mounting plate 10608.

[0082] More specifically, in order to ensure the normal rotation of the rotating body 10605, the upper and lower ends of the rotating body 10605 in this embodiment are rotatably connected to the inner wall of the adjusting cylinder 10604 through the bearing 10606.

[0083] The drive assembly includes a handwheel 10602 located outside the drive cylinder and a drive rod 10603 connected to the handwheel 10602 and located inside the drive cylinder; the drive rod 10603 is kinetically connected to the rotating body 10605 to drive the rotating body 10605 to rotate.

[0084] This embodiment further defines the structure of the adjustment mechanism 106. First, a support cylinder 104 is fixed on the wheel seat 101. The adjustment mechanism 106 of this embodiment is set on the upper end of the support cylinder 104. The adjustment mechanism 106 of this embodiment drives the rotating body 10605 inside the adjustment cylinder 10604 to rotate through the drive assembly on the side. Since the center of the rotating body 10605 is threadedly connected to the adjustment screw 10601, when the rotating body 10605 rotates, the central adjustment screw 10601 can move up and down through the threaded connection with the rotating body 10605, thereby achieving the design purpose of adjusting the height. The upper end of the adjustment screw 10601 is fixed to the second positioning seat 107, so the height of the corresponding end of the antenna beam 10 supported in the second positioning seat 107 can be adjusted synchronously.

[0085] As a structure capable of meeting the adjustment requirements of this application, the drive rod 10603 and the rotating body 10605 in this embodiment adopt a worm gear structure. The worm gear structure is a commonly used transmission structure in mechanical transmission. In this application, the worm can be driven to rotate by the handwheel 10602, and the worm drives the turbine from one side, thereby driving the turbine to rotate. The turbine is the rotating body 10605 in this embodiment. Since the upper and lower ends of the rotating body 10605 are connected to the inner wall of the adjusting cylinder 10604 through the bearing 10606, the rotating body 10605 can rotate freely inside the adjusting cylinder 10604. When the rotating body 10605 rotates, since it is threadedly connected to the internal adjusting screw 10601, the rotational motion can be converted into the linear motion of the adjusting screw 10601, ultimately achieving the design purpose of height adjustment.

[0086] In addition, it should be noted that this embodiment is only a further explanation of a preferred implementation method using a worm gear. From the perspective of mechanical transmission, there are other similar transmission structures that can also satisfy the purpose of adjusting the linear motion of the screw 10601. Therefore, other similar structures with the same function should also fall within the protection scope of this application.

[0087] Since the adjusting screw 10601 needs to move vertically to adjust the height of the upper second positioning seat 107, when moving downwards, it is necessary to ensure that the adjusting screw 10601 has sufficient room to move. The adjusting cylinder is the movable cylinder of the adjusting screw 10601 in this embodiment. However, once the adjusting screw 10601 moves to the lowest point, it is necessary to ensure that the wheel seat 101 will not interfere with it. In order to increase the adjustment stroke and further improve the applicability, the center position of the wheel seat 101 in this embodiment is machined with a through hole 10101 for the adjusting screw 10601 to pass through.

[0088] See Figure 5As shown, the rubber node pressing fixture 2 in this embodiment includes: a node pressing fixture base 201; a first positioning seat 202 fixed to one side of the node pressing fixture base 201, and the first positioning seat 202 is assembled and fixed on the node pressing fixture base 201 through a positioning plate 20202.

[0089] The other side of the node pressing fixture base 201 has a pressing structure 203 that cooperates with the pressure mechanism of the press.

[0090] The antenna beam 10 is supported on the first positioning seat 202 near its end, and the press-fitting node of the antenna beam 10 extends into the press-fitting structure 203.

[0091] The press-fit structure 203 in this embodiment includes:

[0092] The guide rod 20301 is fixed to the node pressing fixture base 201 by the guide rod base 20302, and there are two guide rods 20301, which are arranged at intervals on the node pressing fixture base 201.

[0093] The pressing plate 20303 slides and engages with the two guide rods 20301. The pressing plate 20303 has a pressing part 20305 in the middle position, and the pressing part 20305 engages with the pressing node of the antenna beam 10.

[0094] A support ring 204 is fixed at the position corresponding to the position of the pressing part on the node pressing fixture base 201. The support ring 204 is used to support the outer periphery of the pressing node part of the antenna beam 10.

[0095] This embodiment further describes the structure of the rubber node pressing fixture 2. Its bottom is a node pressing fixture base 201 that is fixed to the working body of the press. A first positioning seat 202 is fixed on one side of the node pressing fixture base 201 (specifically, the side close to the antenna beam 10). The first positioning seat 202 supports the corresponding position of the antenna beam 10. At the same time, the pressing structure 203 of this embodiment is integrated on the side opposite to the first positioning seat 202. The pressing structure 203 is the main working mechanism that is connected to and used in conjunction with the pressure mechanism of the press to press the rubber node 11 of the antenna beam 10.

[0096] Specifically, the press-fit structure 203 of this embodiment includes a guide rod 20301 and a press-fit plate 20303 that slides with the guide rod 20301. In order to slide with the guide rod 20301, this embodiment provides guide rings 20304 at both ends of the press-fit plate 20303 along the length direction, which are sleeved on the outside of the guide rod 20301. Necessary components are provided on the inner side of the guide rings 20304 to achieve connection and sliding fit with the guide rod 20301.

[0097] Secondly, in this embodiment, a pressing part 20305 is provided at the center of the pressing plate 20303. Correspondingly, a support ring 204 is also provided at the corresponding position of the node pressing tool base 201. When the antenna beam 10 extends into the pressing structure, the support ring 204 can support the lower part of the outer periphery of the node 11 of the antenna beam 10. The pressing part 20305 is the main component used for pressing the rubber node. Therefore, in actual operation, the pressing work of the rubber node of the antenna beam 10 is completed by the support ring 204 and the pressing part 20305, as well as by the downward pressure of the external press.

[0098] Preferably, the pressing plate 20303 of this embodiment has handles 20306 at both ends. After one end of the antenna beam 10 is pressed, the pressing plate 20303 of this embodiment can be reset using the handles 20306 at both ends in preparation for pressing the other end.

[0099] During operation, the press in this embodiment uses a 63-ton single-column straightening press hydraulic press in the pre-assembly stage of the assembly line frame, as described in the prior art, to perform the press-fitting operation of the rubber nodes composed of the antenna beam. First, based on the press-fitting equipment and the requirements after press-fitting, the above two toolings were designed. Since the antenna beam 10 is too long and exceeds the limit of the press-fitting horizontal platform, this embodiment uses the movable support tooling 1 and the rubber node press-fitting tooling 2 to perform a step-by-step press-fitting operation on the antenna beam 10. The rubber node press-fitting tooling 2 is fixed in the designated position of the press. First, the first end of the antenna beam 10 extends into the press-fitting structure 203 of the rubber node press-fitting tooling 2. After adjusting the horizontal position, the other end of the antenna beam 10 is supported by the movable support tooling 1. After the first end and the second end of the antenna beam 10 are supported by the first positioning seat 107 and the second positioning seat 202 respectively, the node 11 of the antenna beam 10 is aligned using an angle gauge. Then, the press is started to complete the press-fitting of the node on one side. The fixture is then reset, and the antenna beam 10 is adjusted so that the second end extends into the press-fit structure 203, while the first end is supported by the outer movable support fixture 1. Similarly, after alignment using an angle gauge, the node press-fit of that end is performed. Finally, after both ends are fully press-fitted, the antenna beam 10 is hoisted to the next process.

[0100] In the above technical solution, the adjustable press-fit device provided by this utility model has the following beneficial effects:

[0101] The press-fit device of this utility model presses the press-fit nodes 11 at both ends of the antenna beam 10 in a step-by-step press-fit process. It is designed with a movable support fixture 1 that can support the end of the extra-long antenna beam 10 away from the press machine, so that it can adapt to the press-fit operation requirements of antenna beams 10 of different lengths. With the help of an angle gauge for leveling, the press-fit accuracy is greatly improved, and problems such as loosening and deformation caused by improper press-fit are effectively avoided.

[0102] This invention's press-fit device solves the problems of poor press-fit accuracy and the tendency for incomplete or excessive press-fitting caused by the lack of suitable tooling and insufficient experience in existing press-fitting processes. It employs single-sided step-by-step press-fitting with an angle gauge for alignment, precisely controlling the press-fitting position and force, significantly improving the press-fitting accuracy of nodes and ensuring the integrity of the antenna beam structure.

[0103] Since the mobile support fixture 1 of this utility model is an independent fixture structure, the mobile support fixture 1 and the rubber node pressing fixture 2 of this application can meet the pressing operation requirements of the antenna beam 10 of all models, without being limited by the length of the antenna beam 10, and completely fill the technical gap of the prior art.

[0104] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adjustable press-in device, characterized in that, The device is divided into: The movable support fixture (1) and the rubber node pressing fixture (2) used in conjunction with the press; The rubber node pressing fixture (2) is assembled and fixed on the working platform of the press, and the pressure mechanism of the press is connected to the rubber node pressing fixture (2); One end of the antenna beam (10) extends into the rubber node pressing fixture (2) of the press machine, and the end is supported on the first positioning seat (202) of the rubber node pressing fixture (2); The other end of the antenna beam (10) extends to the outside of the press and is supported by the second positioning seat (107) of the movable support fixture (1); The movable support fixture (1) has an adjustment mechanism (106) connected to the second positioning seat (107), and the height of the second positioning seat (107) is adjusted by the adjustment mechanism (106); The levelness of the antenna beam (10) is measured by an external angle meter.

2. An adjustable press-in device according to claim 1, characterized in that The movable support fixture (1) includes: Mobile base; A support cylinder (104) is disposed on the movable base, and the adjustment mechanism (106) is installed at the upper end of the support cylinder (104); and The second positioning seat (107) is disposed on the upper end of the adjustment mechanism (106). The second positioning seat (107) has a second positioning groove (10701) that can accommodate and support the antenna beam (10). The antenna beam (10) can be embedded in the second positioning groove (10701) near its end and supported on the movable support fixture (1).

3. The adjustable press-fit device according to claim 2, characterized in that, The mobile base includes a wheel seat (101) and a walking wheel (103) installed at the bottom of the wheel seat (101); The wheel seat (101) has three extension arms (102) extending outward, and the three extension arms (102) are evenly distributed around the wheel seat (101). The bottom of the extension arm (102) is provided with the walking wheel (103).

4. The adjustable press-fit device according to claim 3, characterized in that, The support cylinder (104) is fixed at the center of the wheel seat (101); The adjustment mechanism (106) includes: An adjustment mechanism mounting plate (105) is fixed to the upper end of the support cylinder (104); An adjusting cylinder (10604) is fixed to the adjusting mechanism mounting plate (105), and a driving cylinder is provided on the side of the adjusting cylinder (10604) in communication with it. The adjusting cylinder (10604) is arranged in the vertical direction, and the driving cylinder is arranged in the horizontal direction. An adjusting screw (10601) is arranged along the axial direction of the adjusting cylinder (10604), and a rotating body (10605) is threadedly connected to the adjusting screw (10601) inside the adjusting cylinder (10604). A driving assembly is provided along the axial direction of the driving cylinder. The driving assembly is driven by the rotating body (10605) to drive the rotating body (10605) to rotate. The rotation of the rotating body (10605) drives the adjusting screw (10601) to move along the axial direction of the adjusting cylinder (10604). The upper end of the adjusting screw (10601) is connected to the second positioning seat (107) via the mounting plate (108).

5. The adjustable press-fit device according to claim 4, characterized in that, The upper and lower ends of the rotating body (10605) are rotatably connected to the inner wall of the adjusting cylinder (10604) via bearings (10606); The drive assembly includes a handwheel (10602) located outside the drive cylinder, and a drive rod (10603) connected to the handwheel (10602) and located inside the drive cylinder; The drive rod (10603) is connected to the rotating body (10605) to drive the rotating body (10605) to rotate.

6. The adjustable press-fit device according to claim 5, characterized in that, The drive rod (10603) and the rotating body (10605) adopt a worm gear structure.

7. An adjustable press-fit device according to any one of claims 4 to 6, characterized in that, The wheel seat (101) has a through hole (10101) machined at its center for the adjusting screw (10601) to pass through.

8. The adjustable press-fit device according to claim 1, characterized in that, The rubber node pressing fixture (2) includes: Node pressing fixture base (201); A first positioning seat (202) is fixed to one side of the node pressing fixture base (201), and the first positioning seat (202) is assembled and fixed on the node pressing fixture base (201) by a positioning plate (20202); The other side of the node pressing tooling base (201) has a pressing structure (203) that cooperates with the pressure mechanism of the press; The antenna beam (10) is supported near its end on the first positioning seat (202), and the press-fit node of the antenna beam (10) extends into the press-fit structure (203).

9. An adjustable press-fit device according to claim 8, characterized in that, The press-fit structure (203) includes: The guide rod (20301) is fixed to the node pressing fixture base (201) by the guide rod base (20302), and there are two guide rods (20301), which are arranged at intervals on the node pressing fixture base (201). A press plate (20303) that slides in conjunction with the two guide rods (20301) has a press part (20305) at the middle position of the press plate (20303), and the press part (20305) is in conjunction with the press node of the antenna beam (10). The node pressing fixture base (201) is fixed with a support ring (204) at a position corresponding to the pressing part. The support ring (204) is used to support the outer periphery of the pressing node part of the antenna beam (10).

10. An adjustable press-fit device according to claim 9, characterized in that, The press plate (20303) has handles (20306) at both ends.

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