Wheel frame connection positioning adjustment device and pool trailer

Abstract

The present application relates to a wheel frame connection positioning adjustment device and a pool trailer, which include: a first adjustment bracket of a first adjustment unit is movably fixed to a driving frame and a first connecting rod along the width direction of the pool trailer, and is hinged to the first connecting rod, the first connecting rod is connected to the wheel frame, two second adjustment units arranged at intervals each include a second adjustment bracket and a second connecting rod, the second adjustment bracket is movably fixed to the driving frame along the width direction of the pool trailer, and is hinged to the second connecting rod, the second connecting rod is connected to the wheel frame, so that the first adjustment bracket and the second adjustment bracket can jointly adjust the angle between the wheel and the horizontal plane, and the second adjustment bracket can adjust the angle between the wheel and the length direction of the pool trailer. The wheel frame connection positioning adjustment device can adjust the wheel offset through the first adjustment bracket and the second adjustment bracket, without complicated disassembly and assembly, thereby ensuring the accuracy of adjustment, low adjustment difficulty, and convenient and quick adjustment.

Description

Technical Field

[0001] The present application relates to the field of marine engineering test technology, and in particular to a wheel frame connection positioning adjustment device and a pool trailer. Background Art

[0002] At present, there are generally two very long tracks above the ship test tank, and the tank trailer can travel back and forth on the tracks. Generally speaking, the driving accuracy of the tank trailer in the test tank is very high, so at present, the installation process and technology of the two tracks are constantly being innovated to improve the installation accuracy of the tracks and ensure that the tank trailer can travel smoothly on it, thereby ensuring the driving accuracy of the tank trailer.

[0003] However, there are many wheels at the bottom of the pool trailer, and the wheels themselves may deflect relative to the body, resulting in the wheels not fitting perfectly with the tracks, thus affecting the normal driving of the test trailer. In related technologies, when the wheels deflect, it is often necessary to disassemble and assemble the entire wheel frame. The whole process consumes a lot of time and manpower, and the adjustment process is difficult. Summary of the invention

[0004] The embodiment of the present application provides a wheel frame connection positioning adjustment device and a cement trailer to solve the problem in the related art that after the wheel deflects, the entire wheel frame needs to be disassembled and assembled, and the whole process consumes a lot of time and manpower, and the adjustment process is difficult.

[0005] In a first aspect, a wheel frame connection positioning adjustment device is provided, comprising:

[0006] A first adjustment unit, comprising a first adjustment bracket and a first connecting rod, wherein the first adjustment bracket is used to be movably fixed to the driving frame along the width direction of the pool trailer and is hinged to the first connecting rod, and the first connecting rod is used to be connected to the wheel frame;

[0007] Two second adjustment units are arranged at intervals, each of which includes a second adjustment bracket and a second connecting rod, the second adjustment bracket is used to be movably fixed to the driving frame along the width direction of the pool trailer, and is hinged to the second connecting rod, and the second connecting rod is used to be connected to the wheel frame; wherein,

[0008] The first adjustment bracket and the second adjustment bracket are used to adjust the angle between the wheel and the horizontal plane, and the second adjustment bracket is used to adjust the angle between the wheel and the length direction of the pool trailer.

[0009] In some embodiments, the first adjustment bracket includes at least one fastener and at least two adjustment members; wherein,

[0010] The fastener is disposed on the first adjustment bracket and is used to connect the first adjustment bracket and the driving frame;

[0011] The at least two adjusting members are used to be symmetrically spaced and penetrated on the driving frame, and the at least two adjusting members can move relative to or away from each other to drive the first adjusting bracket to move relative to the driving frame along the width direction of the pool trailer.

[0012] In some embodiments, the first adjustment bracket has a first connection portion at one end close to the first connection rod, and a first receiving cavity is provided in the first connection portion;

[0013] The first connecting rod is arranged below the first adjusting bracket, and one end at least partially extends into the first receiving cavity. The rod section extending into the first receiving cavity is sleeved with a first ball joint that cooperates with the first receiving cavity. The first connecting rod can rotate relative to the first connecting part along the circumferential and axial directions of the first connecting rod through the first ball joint.

[0014] In some embodiments, a first ball joint sleeve matching the first ball joint is embedded in the first receiving cavity, an end cover is provided on the top of the first ball joint sleeve, and the end cover is connected to the first connecting portion to prevent the first ball joint sleeve from escaping from the first receiving cavity;

[0015] A first pressure cover is provided on the top of the first ball joint. The first pressure cover is provided on the inner side of the end cover and is connected to the first connecting rod to limit the movement of the first ball joint relative to the first connecting rod.

[0016] In some embodiments, the first adjustment bracket is triangular in shape, the first connecting portion is provided on one of the vertices, and an adjustment portion is provided on each of the remaining two vertices. The at least one fastener is passed through the adjustment portion, and at least one adjustment member is symmetrically provided on both sides of the adjustment portion.

[0017] In some embodiments, the wheel frame connection positioning adjustment device also includes a pressure shaft, which is used to be inserted into the driving frame, and one end of the pressure shaft is rotatably connected to the first connecting rod, and the other end is used to be rotatably connected to the driving frame.

[0018] In some embodiments, one end of the pressure shaft is provided with an upper fixing cover for fixedly connecting with the driving frame;

[0019] Pads are provided at both ends of the pressure shaft, one side of each pad is a flat surface, and the other side is a curved surface recessed in the box, the curved surface of the pad cooperates with the end of the pressure shaft, and the flat surface is against the pressure shaft and the upper fixed cover or the first connecting rod.

[0020] In some embodiments, a second connection portion is provided at one end of the second adjustment bracket close to the first connection rod, and a second receiving cavity is provided in the second connection portion;

[0021] The second connecting rod is arranged above the second adjustment bracket, and one end at least partially extends into the second receiving cavity. The rod section extending into the second receiving cavity is sleeved with a second ball joint that cooperates with the second receiving cavity. The second connecting rod can rotate relative to the second connecting part along the circumferential and axial directions of the second connecting rod through the second ball joint.

[0022] In some embodiments, a second ball joint sleeve matching the second ball joint is embedded in the second receiving cavity, a retaining ring is provided at the bottom of the second ball joint sleeve, and the retaining ring is connected to the second connecting portion to limit the second ball joint sleeve from escaping from the second receiving cavity;

[0023] A second pressure cover is provided at the bottom of the second ball joint. The second pressure cover is provided on the inner side of the retaining ring and is connected to the second connecting rod to limit the movement of the second ball joint relative to the second connecting rod.

[0024] In a second aspect, a pool trailer is provided, which includes a plurality of the above-mentioned wheel frame connection positioning adjustment devices.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] The embodiment of the present application provides a wheel frame connection positioning adjustment device, since the first adjustment bracket of the first adjustment unit is used to be movably fixed to the driving frame and the first connecting rod along the width direction of the pool trailer, and is hinged to the first connecting rod, the first connecting rod is used to be connected to the wheel frame, and the two second adjustment units arranged at intervals each include a second adjustment bracket and a second connecting rod, the second adjustment bracket is used to be movably fixed to the driving frame along the width direction of the pool trailer, and is hinged to the second connecting rod, the second connecting rod is used to be connected to the wheel frame, so that the first adjustment bracket and the second adjustment bracket can jointly adjust the angle between the wheel and the horizontal plane, and the second adjustment bracket can adjust the angle between the wheel and the length direction of the pool trailer. The wheel frame connection positioning adjustment device can realize the adjustment of wheel offset through the first adjustment bracket and the second adjustment bracket, without the need for complicated disassembly and assembly, the entire adjustment process is easy, convenient and quick, and the adjustment accuracy is guaranteed without the need for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of the wheel frame connection positioning adjustment device provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of the wheel frame connection positioning adjustment device provided in an embodiment of the present application when it is installed on a drive frame and a wheel frame;

[0030] Figure 3 A cross-sectional schematic diagram of a first adjustment unit of a wheel frame connection positioning adjustment device provided in an embodiment of the present application;

[0031] Figure 4 A schematic cross-sectional view of a second adjustment unit of the wheel frame connection positioning adjustment device provided in an embodiment of the present application.

[0032] In the figure: 1-first adjusting unit, 10-first adjusting bracket, 100-first connecting part, 101-first receiving cavity, 102-first ball joint sleeve, 103-end cover, 104-adjusting part, 11-first connecting rod, 12-fastener, 13-adjusting member, 14-first ball joint, 15-first pressure cover, 2-second adjusting unit, 20-second adjusting bracket, 200-second connecting part, 201-second receiving cavity, 202-second ball joint sleeve, 203-retaining ring, 21-second connecting rod, 22-second ball joint, 23-second pressure cover, 3-driving frame, 4-wheel frame, 5-wheel, 6-pressure shaft, 60-upper fixing cover, 61-pad, 62-pressure shaft fixing cover, 63-limiting groove, 64-convex rib. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] The embodiment of the present application provides a wheel frame connection positioning adjustment device, which can solve the problem in the related art that after the wheel deflects, the entire wheel frame needs to be disassembled and assembled, the whole process consumes a lot of time and manpower, and the adjustment process is difficult.

[0035] See also Figure 1 and Figure 2As shown, the wheel frame connection positioning adjustment device includes a first adjustment unit 1 and two second adjustment units 2 arranged at intervals. The first adjustment unit 1 specifically includes a first adjustment bracket 10 and a first connecting rod 11. The first adjustment bracket 10 is used to be movably fixed to the driving frame 3 along the width direction of the pool trailer and is hinged to the first connecting rod 11. The first connecting rod 11 is used to be connected to the wheel frame 4. Each second adjustment unit 2 includes a second adjustment bracket 20 and a second connecting rod 21. The second adjustment bracket 20 is used to be movably fixed to the driving frame 3 along the width direction of the pool trailer and is hinged to the second connecting rod 21. The second connecting rod 21 is used to be connected to the wheel frame 4; wherein, the first adjustment bracket 10 and the second adjustment bracket 10 are connected to the second adjustment bracket 10. The joint bracket 20 is used to adjust the angle between the wheel 5 and the horizontal plane, that is, the first adjustment bracket 10 and the second adjustment bracket 20 are both used to adjust whether the wheel 5 is in a vertical state, whether it is offset relative to the vertical plane, here the first adjustment bracket 10 can be adjusted alone, the second adjustment bracket 20 can be adjusted alone, or the first adjustment bracket 10 and the second adjustment bracket 20 can be adjusted at the same time, the specific needs depend on the actual offset of the wheel 5; the second adjustment bracket 20 is used to adjust the angle between the wheel 5 and the length direction of the pool trailer, that is, the second adjustment bracket 20 can be used to adjust whether the connection line between the wheels 5 arranged along the longitudinal interval on the same wheel frame 4 is parallel to the longitudinal direction, if not parallel, then an offset has occurred. The wheel frame connection positioning adjustment device can adjust the offset of the wheel 5 through the first adjustment bracket 10 and the second adjustment bracket 20, without complicated disassembly and assembly, the whole adjustment process is easy, convenient and fast, and the accuracy of the adjustment is guaranteed without disassembly and assembly.

[0036] Furthermore, the first adjustment bracket 10 specifically includes at least one fastener 12 and at least two adjustment members 13, wherein the fastener 12 is provided on the first adjustment bracket 10 and is used to connect the first adjustment bracket 10 and the driving frame 3, and mainly plays the role of fixed connection, and at least two adjustment members 13 are used to be symmetrically spaced and provided on the driving frame 3, and at least two adjustment members 13 can move relative to or away from each other, so as to drive the first adjustment bracket 10 to move relative to the driving frame 3 along the width direction of the pool trailer, and when adjustment is required, the fastener 12 is loosened, and the adjustment members 13 are moved relative to or away from each other, so as to drive the first adjustment bracket 10 to move relative to the driving frame 3; the number of fasteners 12 here can be one or more, and the number of adjustment members 13 can be two or an even number greater than two. In addition, the second adjustment bracket 20 also includes at least one fastener 12 and at least two adjustment members 13, and its structure and interaction principle are the same as those of the first adjustment bracket 10, which will not be repeated here.

[0037] For further information, see Figure 1 and Figure 3As shown, a first connecting portion 100 is provided at one end of the first adjusting bracket 10 close to the first connecting rod 11, a first receiving cavity 101 is provided in the first connecting portion 100, the first connecting rod 11 is provided below the first adjusting bracket 10, and one end at least partially extends into the first receiving cavity 101, a first ball joint 14 cooperating with the first receiving cavity 101 is sleeved on the rod section extending into the first receiving cavity 101, and the first connecting rod 11 can rotate relative to the first connecting portion 100 along the circumferential direction and axial direction of the first connecting rod 11 through the first ball joint 14.

[0038] Specifically, the first connecting part 100 is annular, the first accommodating cavity 101 is cylindrical, the first connecting rod 11 is arranged below the first adjusting bracket 10, the top end of which at least partially extends into the first accommodating cavity 101, and the bottom end is fixedly connected to the wheel frame 4 through a connecting piece; the first connecting rod 11 is hinged to the first connecting part 100 through the first ball joint 14, and can rotate relative to the first connecting part 100 along the circumferential and axial directions of the first connecting rod 11. When the first adjusting bracket 10 and / or the second adjusting bracket 20 are moved relative to the driving frame 3 along the width direction of the pool trailer, the first connecting rod 11 and the first ball joint 14 rotate together along the circumferential direction of the first connecting rod 11. When the second adjusting brackets 20 on both sides move toward or away from each other relative to the driving frame 3 along the width direction of the pool trailer, the first connecting rod 11 and the first ball joint 14 rotate together along the axial direction of the first connecting rod 11, wherein the amount of rotation along the axial direction is smaller than the amount of rotation along the circumferential direction.

[0039] For further information, see Figure 1 and Figure 3 As shown, a first ball joint sleeve 102 matching the first ball joint 14 is embedded in the first receiving cavity 101, an end cover 103 is provided on the top of the first ball joint sleeve 102, and the end cover 103 is connected to the first connecting part 100 to limit the first ball joint sleeve 102 from escaping from the first receiving cavity 101, and a first pressure cover 15 is provided on the top of the first ball joint 14, the first pressure cover 15 is arranged on the inner side of the end cover 103, and is connected to the first connecting rod 11 to limit the movement of the first ball joint 14 relative to the first connecting rod 11.

[0040] Specifically, the end cover 103 is installed on the top surface of the first adjustment bracket 10 through a connecting piece, and is used to limit the position of the first ball joint sleeve 102, ensuring that the first ball joint sleeve 102 is located at a fixed position inside the first accommodating cavity 101; the first pressure cover 15 is installed on the end of the first connecting rod 11 extending into the first accommodating cavity 101 through a connecting piece, which can limit the relative movement between the first ball joint 14 and the first connecting rod 11, so that the first pressure cover 15, the first connecting rod 11, the wheel frame 4 and the first ball joint 14 are connected into a whole.

[0041] For further information, see Figure 1 and Figure 3As shown, the first adjustment bracket 10 is triangular, the first connecting portion 100 is arranged on one of the vertices, and an adjustment portion 104 is arranged on the remaining two vertices. At least one fastener 12 is passed through the adjustment portion 104, and at least one adjustment member 13 is symmetrically arranged on both sides of the adjustment portion 104.

[0042] Specifically, from the perspective of structural design, the first adjustment bracket 10 is triangular in shape, the first connecting portion 100 is arranged on one of the vertices, and the remaining two vertices are connected and fixed to the drive frame 3 through the adjusting portion 104. The triangle has good stability. In addition, the integral structural design is more accurate and more convenient to adjust than the split design arranged on both sides.

[0043] For further information, see Figure 1 and Figure 3 As shown, the wheel frame connection positioning and adjustment device also includes a pressure shaft 6, which is used to be inserted into the driving frame 3, and one end of the pressure shaft 6 is rotatably connected to the first connecting rod 11, and the other end is used to be rotatably connected to the driving frame 3. Specifically, the pressure shaft 6 and the first adjustment unit 1 transmit the force on the driving frame 3 to the wheel frame 4. Since the pressure shaft 6 will tilt during the adjustment of the wheel frame 4, and since the pressure shaft 6 is rotatably connected to the first connecting rod 11 and the driving frame 3, it can be ensured that the force on the driving frame 3 can always be transmitted to the wheel frame 4, ensuring that the wheel frame 4 is balanced in force without unbalanced load. Specifically, the first adjusting bracket 10 and the second adjusting bracket 20 can not only adjust whether the wheel 5 is in a vertical state, and whether the wheels 5 arranged along the longitudinal interval on the same wheel frame 4 are skewed, but also adjust the spacing between the wheel frames 4 on both sides, that is, the spacing between the wheels 5 along the width direction of the pool trailer. The adjustment method is to simultaneously adjust the tightness of the first adjusting bracket 10 and the second adjusting bracket 20 in the same direction, so that the upper and lower parts of the wheel frame 4 are simultaneously translated in the same direction, thereby achieving the purpose of adjusting the spacing between the wheel frames 4 on both sides; and in the process of adjusting the accuracy of the above three aspects, the position of the pressure shaft 6 will tilt from a vertical state to an inclined state. Since the upper end face and the lower end face of the pressure shaft 6 are respectively rotatably connected to the first connecting rod 11 and the driving frame 3, when the pressure shaft 6 is in a tilted state, the force of the driving frame 3 can still be transmitted to the pressure shaft 6, and then to the first connecting rod 11, and finally to the wheel frame 4.

[0044] For further information, see Figure 3 As shown, one end of the pressure shaft 6 is provided with an upper fixed cover 60 for fixedly connecting with the driving frame 3, and both ends of the pressure shaft 6 are also provided with pads 61, one side of each pad 61 is a flat surface, and the other side is a curved surface recessed in the box, the curved surface of the pad 61 cooperates with the end of the pressure shaft 6, and the flat surface is against the pressure shaft 6 and the upper fixed cover 60 or the first connecting rod 11.

[0045] Specifically, from the perspective of structural design, a groove is provided at the bottom of the upper fixed cover 60, and a pad 61 is embedded in the groove. One end of the pressure shaft 6 also at least partially extends into the groove to hold the pad 61 against and fix it in the remaining groove. Two pressure shaft fixing covers 62 are also provided between the pressure shaft 6 and the upper fixed cover 60. The two pressure shaft fixing covers 62 are superimposed on each other to form a limiting groove 63 inside. The two pressure shaft fixing covers 62 are connected to the upper fixed cover 60 through a connecting piece. A circle of convex ribs 64 matching the limiting groove 63 is provided on the pressure shaft 6. Through the engagement and limiting of the convex ribs 64 and the limiting groove 63, the pressure shaft 6 is connected to the upper fixed cover 60. The lower end of the pressure shaft 6 and the first pressure cover 15 can be connected in the same way to achieve connection with the first connecting rod 11.

[0046] For further information, see Figure 1 and Figure 4 As shown, a second connecting portion 200 is provided at one end of the second adjusting bracket 20 close to the first connecting rod 11, a second receiving cavity 201 is provided in the second connecting portion 200, the second connecting rod 21 is arranged above the second adjusting bracket 20, and one end at least partially extends into the second receiving cavity 201, and a second ball joint 22 cooperating with the second receiving cavity 201 is sleeved on the rod section extending into the second receiving cavity 201, and the second connecting rod 21 can rotate relative to the second connecting portion 200 along the circumferential direction and axial direction of the second connecting rod 21 through the second ball joint 22.

[0047] Specifically, the second connecting part 200 is also annular, the second accommodating cavity 201 is cylindrical, the second connecting rod 21 is arranged above the second adjusting bracket 20, and its bottom end at least partially extends into the second accommodating cavity 201, and is fixedly connected to the wheel frame 4 through a connecting piece; the second connecting rod 21 is hinged to the second connecting part 200 through a second ball joint 22, and can rotate relative to the second connecting part 200 along the circumferential direction and axial direction of the second connecting rod 21. When the first adjusting bracket 10 and / or the second adjusting bracket 20 is moved relative to the driving frame 3 along the width direction of the pool trailer, the second connecting rod 21 and the second ball joint 22 rotate together along the circumferential direction of the second connecting rod 21. When the second adjusting brackets 20 on both sides move toward or away from each other relative to the driving frame 3 along the width direction of the pool trailer, the second connecting rod 21 and the second ball joint 22 rotate together along the axial direction of the second connecting rod 21, wherein the amount of rotation along the axial direction is smaller than the amount of rotation along the circumferential direction.

[0048] For further information, see Figure 4As shown, a second ball joint sleeve 202 matching the second ball joint 22 is embedded in the second receiving cavity 201, a retaining ring 203 is provided at the bottom of the second ball joint sleeve 202, and the retaining ring 203 is connected to the second connecting part 200 to limit the second ball joint sleeve 202 from escaping from the second receiving cavity 201, and a second pressure cover 23 is provided at the bottom of the second ball joint 22, and the second pressure cover 23 is arranged on the inner side of the retaining ring 203 and is connected to the second connecting rod 21 to limit the movement of the second ball joint 22 relative to the second connecting rod 21.

[0049] Specifically, the retaining ring 203 is installed inside the second accommodating cavity 201 and is located at the bottom of the second ball joint sleeve 202, and is used to limit the position of the second ball joint sleeve 202 to ensure that the second ball joint sleeve 202 is located at a fixed position inside the second accommodating cavity 201. The second pressure cover 23 is installed at the bottom of the second connecting rod 21 through a connecting piece, which can limit the relative movement between the second ball joint 22 and the second connecting rod 21, so that the second connecting rod 21, the wheel frame 4, the second pressure cover 23 and the second ball joint 22 are connected as a whole.

[0050] The present application also provides a pool trailer, which includes a plurality of the above-mentioned wheel frame connection positioning adjustment devices.

[0051] The function and structure of the wheel frame connection positioning adjustment device of the present pool trailer correspond one to one with the above-mentioned wheel frame connection positioning adjustment device, and will not be described in detail here.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A wheel frame connection positioning adjustment device, characterized in that: It includes: A first adjustment unit (1), comprising a first adjustment bracket (10) and a first connecting rod (11), wherein the first adjustment bracket (10) is used to be movably fixed to the driving frame (3) along the width direction of the pool trailer and is hinged to the first connecting rod (11), and the first connecting rod (11) is used to be connected to the wheel frame (4); Two second adjustment units (2) are arranged at intervals, each of the second adjustment units (2) comprises a second adjustment bracket (20) and a second connecting rod (21), the second adjustment bracket (20) is used to be movably fixed to the driving frame (3) along the width direction of the pool trailer, and is hinged to the second connecting rod (21), and the second connecting rod (21) is used to be connected to the wheel frame (4); wherein, The first adjustment bracket (10) and the second adjustment bracket (20) are used to adjust the angle between the wheel (5) and the horizontal plane, and the second adjustment bracket (20) is used to adjust the angle between the wheel (5) and the length direction of the pool trailer; The first adjustment bracket (10) comprises at least one fastener (12) and at least two adjustment members (13); wherein: The fastener (12) is disposed on the first adjustment bracket (10) and is used to connect the first adjustment bracket (10) and the driving frame (3); The at least two adjusting members (13) are used to be symmetrically spaced and penetrated on the driving frame (3), and the at least two adjusting members (13) can move relative to or away from each other to drive the first adjusting bracket (10) to move relative to the driving frame (3) along the width direction of the pool trailer; The wheel frame connection positioning adjustment device also includes a pressure shaft (6), which is used to be inserted into the driving frame (3), and one end of which is rotatably connected to the first connecting rod (11) and the other end of which is rotatably connected to the driving frame (3).

2. A wheel frame connection positioning and adjustment device as claimed in claim 1, characterized in that: A first connecting portion (100) is provided at one end of the first adjustment bracket (10) close to the first connecting rod (11), and a first receiving cavity (101) is provided in the first connecting portion (100); The first connecting rod (11) is arranged below the first adjustment bracket (10), and one end at least partially extends into the first receiving cavity (101). The rod section extending into the first receiving cavity (101) is sleeved with a first ball joint (14) that cooperates with the first receiving cavity (101). The first connecting rod (11) can rotate relative to the first connecting part (100) along the circumferential and axial directions of the first connecting rod (11) through the first ball joint (14).

3. A wheel frame connection positioning and adjustment device as claimed in claim 2, characterized in that: A first ball joint sleeve (102) matching the first ball joint (14) is embedded in the first receiving cavity (101); an end cover (103) is provided on the top of the first ball joint sleeve (102); the end cover (103) is connected to the first connecting portion (100) to prevent the first ball joint sleeve (102) from escaping from the first receiving cavity (101); A first pressure cover (15) is provided on the top of the first ball joint (14). The first pressure cover (15) is arranged on the inner side of the end cover (103) and is connected to the first connecting rod (11) to limit the movement of the first ball joint (14) relative to the first connecting rod (11).

4. A wheel frame connection positioning and adjustment device as claimed in claim 2, characterized in that: The first adjustment bracket (10) is triangular in shape, the first connection portion (100) is arranged on one of the vertices, and an adjustment portion (104) is arranged on each of the remaining two vertices. The at least one fastener (12) is passed through the adjustment portion (104), and at least one adjustment member (13) is symmetrically arranged on both sides of the adjustment portion (104).

5. A wheel frame connection positioning and adjustment device as claimed in claim 1, characterized in that: One end of the pressing shaft (6) is provided with an upper fixing cover (60) for being fixedly connected to the driving frame (3); Both ends of the pressing shaft (6) are provided with pads (61), one side of each pad (61) is a plane, and the other side is a curved surface recessed in the box, the curved surface of the pad (61) cooperates with the end of the pressing shaft (6), and the flat surface is against the pressing shaft (6) and the upper fixed cover (60) or the first connecting rod (11).

6. A wheel frame connection positioning and adjustment device as claimed in claim 1, characterized in that: A second connection portion (200) is provided at one end of the second adjustment bracket (20) close to the first connection rod (11), and a second receiving cavity (201) is provided in the second connection portion (200); The second connecting rod (21) is arranged above the second adjustment bracket (20), and one end at least partially extends into the second receiving cavity (201). The rod section extending into the second receiving cavity (201) is sleeved with a second ball joint (22) that cooperates with the second receiving cavity (201). The second connecting rod (21) can rotate relative to the second connecting part (200) along the circumferential direction and axial direction of the second connecting rod (21) through the second ball joint (22).

7. A wheel frame connection positioning and adjustment device as claimed in claim 6, characterized in that: A second ball joint sleeve (202) matching the second ball joint (22) is embedded in the second receiving cavity (201); a retaining ring (203) is provided at the bottom of the second ball joint sleeve (202); the retaining ring (203) is connected to the second connecting portion (200) to prevent the second ball joint sleeve (202) from escaping from the second receiving cavity (201); A second pressure cover (23) is provided at the bottom of the second ball joint (22). The second pressure cover (23) is provided on the inner side of the retaining ring (203) and is connected to the second connecting rod (21) so as to limit the movement of the second ball joint (22) relative to the second connecting rod (21).

8. A pool trailer, characterized in that: It includes: A plurality of wheel frame connection positioning and adjustment devices as described in any one of claims 1 to 7.

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