Tooling support for tank car arm main ball valve maintenance

Abstract

The application discloses a tool support for overhauling a main ball valve of a tank truck arm, which comprises an overhauling frame body, two groups of supporting rods which are slidably arranged on the overhauling frame body and are provided with power elements, two groups of lifting units which are correspondingly arranged on the two groups of supporting rods, two groups of limiting units which are correspondingly arranged on the two groups of supporting rods and two groups of clamping units which are correspondingly slidably arranged on the two groups of supporting rods. The lifting units, the limiting units and the clamping units can be arranged to realize the dismounting and mounting of the main ball valve of the tank truck arm by one person, facilitate the operation, accelerate the operation speed, reduce the difficulty of the dismounting and mounting and prevent the rear arm of the tank truck from being raised up during the dismounting.

Description

Technical Field

[0001] This invention relates to the field of tank truck boom maintenance technology, specifically a tooling bracket for the maintenance of the main ball valve of a tank truck boom. Background Technology

[0002] Currently, during maintenance of the main ball valve of a tank truck boom, the tank truck boom must be disassembled before the main ball valve can be removed. After maintenance, the valve and the tank truck boom need to be raised for installation. Furthermore, during disassembly, the spring cylinder causes the rear wall of the tank truck to tilt upwards. Additionally, due to the weight of the tank truck boom, disassembly and installation are entirely manual, requiring a large number of operators, and are time-consuming and difficult. Therefore, we propose a tooling bracket for the maintenance of the main ball valve of a tank truck boom. Summary of the Invention

[0003] The purpose of this invention is to provide a tooling bracket for overhauling the main ball valve of a tank truck boom, in order to solve the problems mentioned in the background art, which require a large number of operators and are time-consuming and difficult to manually disassemble, repair, and install the main ball valve of the tank truck boom.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tooling bracket for overhauling the main ball valve of a tank truck boom, comprising an overhaul bracket body, and further comprising: two sets of support rods slidably disposed on the overhaul bracket body, wherein the overhaul bracket body is provided with a power component for synchronously sliding the two sets of support rods up and down; two sets of lifting units correspondingly disposed on the two sets of support rods, for lifting the rear boom of the tank truck during disassembly; two sets of limiting units correspondingly disposed on the two sets of support rods, for limiting the extension and retraction ends of the spring cylinders on the rear boom of the tank truck during disassembly; and two sets of clamping units correspondingly slidably disposed on the two sets of support rods, for rolling clamping during disassembly of the front boom of the tank truck.

[0005] Optionally, the power component includes: a power slide groove, which is provided at both ends of the maintenance frame body for supporting rods to slide; two sets of threaded rods, which are provided on the power slide groove and threadedly connected to both ends of the two sets of supporting rods, with one end extending to the lower end of the power slide groove and the other end passing through the power slide groove and provided with a power motor for driving the threaded rods to rotate, and the power motor being fixed to the maintenance frame body by a fixing plate.

[0006] Optionally, the limiting unit includes: a limiting frame, slidably mounted on a support rod, the support rod having a limiting groove for sliding the limiting frame; an elastic telescopic rod, one end fixed to the upper end of the limiting frame and the other end fixed to a limiting plate; a limiting pin, fixedly mounted on the limiting plate for insertion into the shaft hole of the telescopic end of the spring cylinder; and a fixing member, disposed between the limiting frame and the support rod, for fixing the limiting frame after the limiting pin is inserted into the shaft hole.

[0007] Optionally, the fastener includes: multiple sets of fixed threaded holes, evenly arranged on the support rod located at the limiting groove; and a screw threadedly connected to the fixed threaded holes.

[0008] Optionally, the lifting unit includes: a lifting rod fixed to a support rod, with a sliding rod slidably disposed at the end of the lifting rod away from the support rod; and an arc-shaped lifting seat fixedly disposed at the end of the sliding rod for lifting the rear arm of the tank truck.

[0009] Optionally, the clamping unit includes: two sets of clamping arms, which are fixedly mounted on a support rod on the side away from the lifting unit, and the two sets of clamping arms are connected by a connecting arm and slidably mounted on the support rod;

[0010] Two sets of telescopic arms are slidably mounted on the clamping arms, and a first clamping roller is provided between the two sets of telescopic arms.

[0011] Two sets of auxiliary arms, each set including an outer auxiliary arm and an inner auxiliary arm, with a second clamping roller between the two outer auxiliary arms and a third clamping roller between the two inner auxiliary arms. Both sets of auxiliary arms are rotatably mounted on the clamping arm via a rotating shaft. A fixing part is provided between the clamping arm and the telescopic arm to fix the telescopic length of the telescopic arm. A cooperating part is provided between the telescopic arm and the auxiliary arms to make the included angle between the auxiliary arms decrease / increase when the telescopic arm extends / contracts.

[0012] Optionally, the fixing part includes: a fixing frame, fixedly mounted on the clamping arm; a fixing rod, slidably mounted on the fixing frame; a limiting piece, fixedly mounted on the fixing rod; and a return spring, which is sleeved on the fixing rod between the fixing frame and the limiting piece and abuts against it at both ends. The clamping arm is provided with a through hole through which the fixing rod passes to the telescopic arm, and the telescopic arm is provided with fixing holes evenly arranged to cooperate with the fixing rod.

[0013] Optionally, the rotating shaft rotates at a fixed point on the clamping arm.

[0014] Optionally, the cooperating part includes: an internal gear, an external gear, and an external gear and an internal gear respectively provided on the rotating shaft connected to the auxiliary external arm and the auxiliary internal arm extending to the telescopic arm; a first rack provided on the upper end of the telescopic arm on the side of the internal gear and meshing with the internal gear; and a second rack provided on the lower end of the telescopic arm on the side of the external gear and meshing with the external gear.

[0015] Optionally, a limit block is provided at the end of the clamping arm away from the support rod.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] (1) By setting up a lifting unit, a limiting unit and a clamping unit, the present invention enables a single person to independently complete the disassembly and installation of the main ball valve of the tank truck boom. It can also speed up the operation while making the operation convenient and reducing the difficulty of disassembly and installation. At the same time, it can also prevent the problem of the tank truck boom tilting upward during disassembly.

[0018] (2) The present invention achieves rolling clamping of the front arm of the tank truck by setting the first clamping roller, the second clamping roller and the third clamping roller, and two sets of auxiliary arms are set on the inner and outer sides of the telescopic arm to cooperate with it to perform clamping. At the same time, in order to make the telescopic arm and the auxiliary arms move synchronously, a coordinating part is set at the connection, so that the angle between the auxiliary arms becomes smaller / larger when the telescopic arm extends / contracts.

[0019] (3) The present invention, through the setting of the lifting unit, can adjust the position of the arc-shaped lifting seat by extending / shortening the sliding rod, so as to better adjust the length to lift the tank truck according to the position of the rear arm. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the tooling bracket provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the tooling bracket provided in an embodiment of the present invention from another perspective;

[0022] Figure 3 This is a schematic diagram of the overall structure of the clamping unit of the tooling bracket provided in an embodiment of the present invention;

[0023] Figure 4 Another perspective structural schematic diagram of the clamping unit of the tooling bracket provided in an embodiment of the present invention;

[0024] Figure 5 A partial cross-sectional view of the cooperating part of the tooling bracket provided in an embodiment of the present invention;

[0025] Figure 6 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 7 for Figure 1 Enlarged view at point B in the middle;

[0027] Figure 8 for Figure 2 Enlarged view at point C;

[0028] Figure 9 for Figure 4 Enlarged view at point D;

[0029] Figure 10 for Figure 5Enlarged view of point E in the middle.

[0030] Reference numerals: 1. Inspection frame body; 2. Support rod; 3. Power component; 31. Power slide groove; 32. Threaded rod; 33. Power motor; 4. Lifting unit; 41. Lifting rod; 42. Sliding rod; 43. Arc-shaped lifting seat; 5. Limiting unit; 51. Limiting frame; 52. Limiting slide groove; 53. Elastic telescopic rod; 54. Limiting pin; 55. Limiting plate; 56. Shaft hole; 57. Fixing component; 571. Threaded hole; 572. Screw; 6. Clamping unit; 61. Clamping arm; 62. Connecting arm; 63. Telescopic arm; 64. First clamping arm. 65. Roller; 651. Auxiliary arm; 652. Auxiliary outer arm; 653. Auxiliary inner arm; 66. Second clamping roller; 67. Third clamping roller; 68. Fixing part; 681. Fixing frame; 682. Fixing rod; 683. Limiting plate; 684. Return spring; 685. Through hole; 686. Fixing hole; 69. Coordinating part; 691. Internal gear; 692. External gear; 693. First rack; 694. Second rack; 695. Limiting block; 7. Tank car arm body; 71. Tank car front arm; 72. Tank car rear arm; 8. Spring cylinder; 9. Main ball valve body. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0032] Please see Figures 1-2 and Figures 6-8 This invention provides a technical solution: a tooling bracket for overhauling the main ball valve of a tank truck boom, comprising a maintenance bracket body 1 and a tank truck boom body 7 for installing the main ball valve body 9. The tank truck boom body 7 includes a tank truck front boom 71 and a tank truck rear boom 72, wherein the main ball valve body 9 is installed between the tank truck front boom 71 and the tank truck rear boom 72, i.e., at the location where disassembly and maintenance are required. It also includes two sets of support rods 2 slidably disposed on the maintenance bracket body 1. A power component 3 is provided on the maintenance bracket body 1, which can drive the two sets of support rods 2 to slide up and down synchronously to adjust the height of the support rods 2.

[0033] The power component 3 includes a power motor 33, the rotating end of which is connected to a threaded rod 32, which is threadedly connected to the support rod 2. When the power motor 33 rotates, it can drive the threaded rod 32 to rotate, thereby realizing the up and down sliding of the support rod. In order to facilitate the sliding of the support rod 2 and the placement of the threaded rod, a power slide groove 31 is provided on the maintenance frame body 1. At the same time, the power motor 33 is fixed to the maintenance frame body 1 by a fixing plate. Two sets of lifting units 4 are also provided on the two sets of support rods 2 for lifting the rear arm 72 of the tank truck during disassembly. Two sets of limiting units 5 are also provided on the two sets of support rods 2 for limiting the extension and retraction end of the spring cylinder 8 on the rear arm 72 of the tank truck during disassembly. In addition, two sets of clamping units 6 are slidably provided on the two sets of support rods 2 for rolling clamping of the front arm 71 of the tank truck during disassembly. That is, each set of support rods 2 is provided with a set of clamping units 6.

[0034] It should be noted that the main body 7 of the tank truck boom includes the front boom 71 and the rear boom 72, and these are all existing technologies, so they will not be described in detail here.

[0035] During maintenance, the maintenance frame body 1 can be moved to the outside of the tank truck boom body 7, and then the power motor 33 is controlled to drive the threaded rod 32 to rotate, thereby adjusting the height of the two sets of support rods 2 to the lifting unit 4 at the lower end of the tank truck boom body 7, and lifting the rear boom 72 of the tank truck.

[0036] Optionally, the limiting unit 5 includes a limiting frame 51 slidably mounted on the support rod 2. To allow the limiting frame 51 to slide on the support rod 2, the support rod 2 is provided with a limiting groove 52. An elastic telescopic rod 53 is installed on the limiting frame 51, and a limiting plate 55 is fixed to the other end of the elastic telescopic rod 53. A limiting pin 54 that matches the shaft hole of the spring cylinder 8 is then installed on the limiting plate 55. During maintenance, after the hose at this location is disassembled, the elastic telescopic rod 53 can be pressed, and the telescopic end of the spring cylinder 8 can be pressed to align the limiting pin 54 with the shaft hole 56, thereby inserting the limiting pin 54 into the shaft hole 56. With the support rod 2 after height adjustment, the spring cylinder 8 can be limited to prevent the rear arm 72 of the tank truck from tilting upwards during disassembly.

[0037] A fixing member 57 is provided between the limiting frame 51 and the support rod 2 for fixing the limiting frame 51 after the limiting pin 54 is inserted into the shaft hole 56. The fixing member 57 includes multiple sets of fixing threaded holes 571 evenly arranged on the support rod 2 located at the limiting slide groove 52. A screw 572 is also provided on the fixing threaded hole 571. After the position of the limiting frame 51 is determined, the screw 572 is inserted into the fixing threaded hole 571 at the corresponding position. The screw 572 is rotated so that the front part of the screw 572 fixes the limiting frame 51 located in the limiting slide groove 52.

[0038] The lifting unit 4 includes a lifting rod 41 fixed to the support rod 2. A sliding rod 42 is slidably provided at the end of the lifting rod 41 away from the support rod 2. An arc-shaped lifting seat 43 for lifting the rear boom 72 of the tank truck is fixedly provided at the end of the sliding rod 42. The extension / retraction of the sliding rod 42 can adjust the position of the arc-shaped lifting seat 43 so as to better adjust the length to lift the rear boom 72 of the tank truck according to its position.

[0039] The tooling bracket provided in this embodiment of the invention, by setting up a lifting unit, a limiting unit and a clamping unit, enables a single person to independently complete the disassembly and installation of the main ball valve of the tank truck boom. It can also speed up the operation while making the operation convenient and reducing the difficulty of disassembly and installation. At the same time, it can also prevent the tank truck boom from tilting upwards during disassembly operations.

[0040] Please refer to Figures 1-5 and Figures 9-10 The clamping unit 6 includes two sets of clamping arms 61 fixedly mounted on the support rod 2 on the side away from the lifting unit 4. The two sets of clamping arms 61 are connected by a connecting arm 62 and slidably mounted on the support rod 2, so that the two sets of clamping arms 61 have a square structure, thereby stabilizing the clamping unit 6. Telescopic arms 63 are slidably mounted at the ends of the two sets of clamping arms 61. A first clamping roller 64 for clamping the front arm 71 of the tank truck is provided between the two sets of telescopic arms 63. Two sets of auxiliary arms 65 are provided on the inner and outer sides of the telescopic arms 63 to cooperate with them in clamping. Each set of auxiliary arms 65 includes an auxiliary outer arm 651 and an auxiliary inner arm 652. A second clamping roller 66 is provided between the two auxiliary inner arms 651, and a third clamping roller 67 is provided between the two auxiliary inner arms 652. The first clamping roller 64, the second clamping roller 66, and the third clamping roller 67 work synchronously to achieve rolling clamping of the tank truck front arm 71. Both sets of auxiliary arms 65 are rotatably mounted on the clamping arm 61 via a rotating shaft. In order to fix the lower telescopic arm 63 when it extends / retracts, a fixing part 68 is provided between the clamping arm 61 and the telescopic arm 63. At the same time, in order to make the telescopic arm 63 and the auxiliary arm 65 move synchronously, a cooperating part 69 is provided at the connection, so that the included angle between the auxiliary arms 65 becomes smaller / larger when the telescopic arm 63 extends / retracts.

[0041] Therefore, when the telescopic arm 63 extends, the included angle of the auxiliary arm 65 decreases to clamp the tank truck front arm 71. When the telescopic arm 63 retracts, the included angle of the auxiliary arm 65 increases to release the clamp. At the same time, through rolling clamping, the tank truck front arm 71 can be rotated after clamping to release the threaded connection with the main ball valve body 9. Simultaneously, through the sliding setting of the clamping arm 61, the tank truck front arm 71 can slide to one side when rotating to release the connection, which facilitates the installation and removal of the tank truck front arm 71.

[0042] The present invention achieves rolling clamping of the front arm of the tank truck by setting up a first clamping roller, a second clamping roller and a third clamping roller, and two sets of auxiliary arms are set on the inner and outer sides of the telescopic arm to cooperate with it in clamping. At the same time, in order to make the telescopic arm and the auxiliary arms move synchronously, a coordinating part is set at their connection, so that the included angle between the auxiliary arms becomes smaller / larger when the telescopic arm extends / contracts.

[0043] In some embodiments, the fixing part 68 includes a fixing frame 681 disposed on the clamping arm 61. To achieve a fixing effect, a fixing rod 682 slides on the fixing frame 681, which works in conjunction with the fixing rod 682 to achieve a fixing effect. Fixing holes 686 are evenly disposed on the telescopic arm 63, allowing the fixing rod 682 to pass through the clamping arm 61 to the fixing hole 686. A through hole 685 is disposed on the clamping arm 61. In order to give the fixing rod 682 a downward pressing force, a limiting piece 683 is disposed on the fixing rod 682, and a return spring is sleeved between the fixing frame 681 and the limiting piece 683 to ensure that the fixing rod 682 is inserted securely.

[0044] In order to enable the auxiliary arm 65 to rotate at a fixed point, the rotating shaft is fixedly mounted on the clamping arm 61. The cooperating part 69 includes an internal gear 691 and an external gear 692. The rotating shaft connecting the auxiliary external arm 651 and the auxiliary internal arm 652 extends to the telescopic arm 63 and is respectively provided with the external gear 692 and the internal gear 691. In order to enable the auxiliary external arm 651 to rotate upward when the telescopic arm 63 is extended, the first rack 693 is provided on the upper end of the telescopic arm 63 on the side of the internal gear 691 and meshes with the internal gear 691. When the telescopic arm 63 extends, the auxiliary inner arm 652 can rotate downwards. Its second rack 694 is set at the lower end of the telescopic arm 63 on the side of the external gear 692 and meshes with the external gear 692. In this way, when the telescopic arm 63 extends outwards, the first rack 693 and the second rack 694 move with the telescopic arm 63, which can drive the inner gear 691 and the external gear 692 to rotate, realize the rotation of the auxiliary inner wall and the auxiliary outer arm 651, and realize the synchronous movement of the first clamping roller 64, the second clamping roller 66, and the third clamping roller 67, thereby realizing the clamping operation.

[0045] In some embodiments, in order to limit the longest extension length of the telescopic arm 63 due to the action of the first rack 693 and the second rack 694 when the telescopic arm 63 moves forward, a limiting block 695 is provided at the end of the clamping arm 61 away from the support rod 2.

[0046] The operation process for overhauling the main ball valve of the tank truck boom using the tooling bracket provided in this embodiment of the invention is as follows:

[0047] 1. Move the inspection frame body 1 to the position of the tank truck boom body 7, and then adjust the height of the support rod 2 through the power component 3 so that the lifting unit 4 can complete the lifting action of the tank truck rear boom 72.

[0048] Second, the extension and retraction end of the spring cylinder 8 is limited by the limiting unit 5 to prevent the rear arm 72 of the tanker truck from tilting upwards after disassembly.

[0049] Third, the telescopic arm 63 is extended so that the first clamping roller 64, the second clamping roller 66, and the third clamping roller 67 move synchronously under the action of the coordinating part 69, thereby completing the rolling clamping of the tank truck front arm 71, facilitating the disassembly of the tank truck front arm 71, and fixing the telescopic arm 63 by the fixing part 68 after clamping, thus completing the entire preparation work.

[0050] 4. Disassemble and conduct a comprehensive overhaul of the main ball valve body 9 after disassembly.

[0051] 5. Reinstallation: After the inspection and repair are completed, reinstall the components.

[0052] 6. Repeat the above operations to disassemble and install the main ball valve body 9.

[0053] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0054] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A tooling bracket for overhauling the main ball valve of a tank truck boom, comprising an overhaul bracket body (1), characterized in that, Also includes: Two sets of support rods (2) are slidably mounted on the maintenance frame body (1). The maintenance frame body (1) is provided with a power component (3) for synchronously driving the two sets of support rods (2) to slide up and down. Two sets of lifting units (4) are respectively set on the two sets of support rods (2) for lifting the rear arm (72) of the tank truck during disassembly; Two sets of limiting units (5) are respectively set on the two sets of support rods (2) to limit the extension and retraction end of the spring cylinder (8) on the rear arm (72) of the tank truck during disassembly; Two sets of clamping units (6) are slidably mounted on the two sets of support rods (2) for rolling clamping when the tank truck front arm (71) is disassembled.

2. The tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 1, characterized in that, The power component (3) includes: The power slide (31) is provided at both ends of the maintenance frame body (1) for the support rod (2) to slide; Two sets of threaded rods (32) are set on the power slide (31) and threadedly connected to both ends of the two sets of support rods (2). One end extends to the lower end of the power slide (31), and the other end passes through the power slide (31) and is equipped with a power motor (33) to drive the threaded rods (32) to rotate. The power motor (33) is fixed to the maintenance frame body (1) by a fixing plate.

3. The tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 1, characterized in that, The limiting unit (5) includes: The limiting frame (51) is slidably mounted on the support rod (2), and the support rod (2) is provided with a limiting groove (52) for the sliding of the limiting frame (51). The elastic telescopic rod (53) is fixed at one end to the upper end of the limiting frame (51) and at the other end to the limiting plate (55). The limiting pin (54) is fixedly set on the limiting plate (55) and is used to insert into the shaft hole (56) of the telescopic end of the spring cylinder (8); The fixing component (57) is set between the limiting frame (51) and the support rod (2) to fix the limiting frame (51) after the limiting pin (54) is inserted into the shaft hole (56).

4. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 3, characterized in that, The fastener (57) includes: Multiple sets of fixed threaded holes (571) are evenly arranged on the support rod (2) located at the limiting slide groove (52); The screw (572) is threadedly connected to the fixed threaded hole (571).

5. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 1, characterized in that, The lifting unit (4) includes: The lifting rod (41) is fixed on the support rod (2), and a sliding rod (42) is slidably provided at the end of the lifting rod (41) away from the support rod (2). An arc-shaped lifting seat (43) is fixedly installed at the end of the sliding rod (42) and is used to lift the rear arm (72) of the tank truck.

6. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 1, characterized in that, The clamping unit (6) includes: Two sets of clamping arms (61) are fixedly installed on the support rod (2) on the side away from the lifting unit (4). The two sets of clamping arms (61) are connected by a connecting arm (62) and are slidably installed on the support rod (2). Two sets of telescopic arms (63) are slidably mounted on the clamping arm (61), and a first clamping roller (64) is provided between the two sets of telescopic arms (63). Two sets of auxiliary arms (65), one set of auxiliary arms (65) includes an auxiliary outer arm (651) and an auxiliary inner arm (652), a second clamping roller (66) is provided between the two auxiliary outer arms (651), and a third clamping roller (67) is provided between the two auxiliary inner arms (652). Both sets of auxiliary arms (65) are rotatably mounted on the clamping arm (61) via a rotating shaft; A fixing part (68) is provided between the clamping arm (61) and the telescopic arm (63) for fixing the telescopic length of the telescopic arm (63); The coordination part (69) is provided between the telescopic arm (63) and the auxiliary arm (65) so that the angle between the auxiliary arm (65) decreases / increases when the telescopic arm (63) extends / retracts.

7. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 6, characterized in that, The fixing part (68) includes: The fixing bracket (681) is fixedly mounted on the clamping arm (61); The fixing rod (682) is slidably mounted on the fixing frame (681); The limiting piece (683) is fixedly mounted on the fixing rod (682); The return spring (684) is sleeved on the fixing rod (682) between the fixing frame (681) and the limiting piece (683) and its two ends abut against it. The clamping arm (61) is provided with a through hole (685) through which the fixing rod (682) passes to the telescopic arm. The telescopic arm (63) is provided with fixing holes (686) evenly arranged to cooperate with the fixing rod (682).

8. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 6, characterized in that, The rotating shaft rotates at a fixed point on the clamping arm (61).

9. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 8, characterized in that, The coordinating unit (69) includes: The rotating shaft connecting the inner gear (691), the outer gear (692), the auxiliary outer arm (651), and the auxiliary inner arm (652) extends to the telescopic arm (63) and is respectively provided with an outer gear (692) and an inner gear (691). The first rack (693) is provided on the upper end of the telescopic arm (63) on one side of the internal gear (691) and is meshed with the internal gear (691); The second rack (694) is provided at the lower end of the telescopic arm (63) on one side of the external gear (692) and is meshed with the external gear (692).

10. A tooling bracket for overhauling the main ball valve of a tank truck boom according to claim 9, characterized in that, A limit block (695) is provided at the end of the clamping arm (61) away from the support rod (2).

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