A gantry support positioning tool

Abstract

The present application belongs to the technical field of forklift gantry, and discloses a gantry support positioning tool, which comprises a base, a pressing support assembly, a lateral support piece, a lateral pressing assembly, a longitudinal support piece, a longitudinal pressing assembly, a transverse support piece and a transverse pressing assembly, wherein the base comprises a horizontal plate and a vertical plate; the pressing support assembly is arranged on the vertical plate to press the gantry support in the front-rear direction; the lateral support piece is arranged on the vertical plate to support the gantry support in the left-right direction; the lateral pressing assembly is arranged on the vertical plate to press the gantry support in the left-right direction on the lateral support piece; the longitudinal support piece is arranged on the horizontal plate to support the gantry support in the up-down direction; the longitudinal pressing assembly is arranged on the horizontal plate to press the gantry support in the up-down direction on the longitudinal support piece; the transverse support piece is arranged on the vertical plate to support the gantry support in the front-rear direction; and the transverse pressing assembly is arranged on the vertical plate to press the gantry support in the front-rear direction on the transverse support piece; the tool can adjust the clamping force according to the vibration generated during machining.

Description

Technical Field

[0001] This invention relates to the field of forklift mast technology, and more particularly to a mast support positioning fixture. Background Technology

[0002] The mast support on an electric reach truck is a crucial component connecting the mast to the chassis, requiring high precision. After welding, the mast support needs to be machined. During machining, the mast support must be clamped and positioned to ensure the product is fixed in place and to guarantee its positioning accuracy.

[0003] Machine tool processing has high requirements for product vibration, which means it requires high clamping force. For gantry support clamping and positioning, there is no dedicated positioning fixture. The most common method is to use bolts for positioning. This structure cannot adjust the clamping force according to the vibration generated during actual processing. Summary of the Invention

[0004] The purpose of this invention is to provide a gantry support positioning fixture to solve the problems mentioned in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A gantry support positioning fixture, comprising:

[0007] A base, the base comprising a horizontal plate and a vertical plate, the vertical plate being arranged perpendicularly to the horizontal plate;

[0008] A clamping support assembly is disposed on the longitudinal plate and configured to clamp the gantry support in the front-rear direction.

[0009] A lateral support member is disposed on the longitudinal plate and is configured to support the gantry support in the lateral direction.

[0010] A lateral clamping assembly is disposed on the longitudinal plate and configured to clamp the gantry support to the lateral support in the lateral direction.

[0011] A longitudinal support member is disposed on the transverse plate and is configured to support the gantry support in the vertical direction.

[0012] A longitudinal clamping assembly is disposed on the transverse plate and configured to press the gantry support against the longitudinal support member in the vertical direction.

[0013] A transverse support member is disposed on the longitudinal plate and is configured to support the gantry support in the front-rear direction.

[0014] A transverse clamping assembly is disposed on the longitudinal plate and configured to clamp the gantry support in the front-rear direction onto the transverse support.

[0015] Optionally, the horizontal plate is further provided with a lateral clamping assembly, which is configured to clamp the gantry support in the left and right directions.

[0016] Optionally, the lateral clamping assembly includes:

[0017] L-shaped support block, the horizontal end of which is connected to the horizontal plate;

[0018] A locking rod is threaded to the vertical end of the L-shaped support block, and the locking rod can tighten the gantry support in the left and right directions.

[0019] Optionally, the clamping support assembly includes:

[0020] The T-shaped support block engages with the connecting groove on the longitudinal plate.

[0021] A first connecting screw, one end of which is connected to the T-shaped support block;

[0022] The first pressure block has a first through hole and a second through hole. The end of the first connecting screw that is away from the T-shaped support block passes through the first through hole and is threadedly connected to the first locking nut. The first pressure block presses the gantry support in the front-rear direction.

[0023] A first support rod, one end of which is connected to the longitudinal plate, and the axis of the first support rod is parallel to the axis of the first connecting screw. The first support rod is slidably inserted through the second through hole.

[0024] Optionally, the lateral clamping assembly includes:

[0025] The horizontal end of the L-shaped base block is connected to the longitudinal plate;

[0026] A locking screw is threaded to the vertical end of the L-shaped base block, and the locking screw can press the gantry support against the lateral support in the left and right directions.

[0027] Optionally, the longitudinal clamping assembly includes:

[0028] A support base, which is connected to the horizontal plate;

[0029] A second connecting screw, one end of which is connected to the support base;

[0030] The second pressure block has a first strip hole and a first sliding groove. The extension direction of the first strip hole is the same as the extension direction of the first sliding groove. The end of the second connecting screw away from the support base passes through the first strip hole and is threadedly connected to the second locking nut.

[0031] The second support rod has one end connected to the support base, the axis of the second support rod is parallel to the axis of the second connecting screw, and the end of the second support rod away from the support base is slidably connected to the first sliding groove.

[0032] Optionally, the support base is provided with an adjusting screw, the adjusting screw is threadedly connected to a support seat, the support seat is aligned with the second pressure block, and the support seat can support the gantry support in the vertical direction.

[0033] Optionally, the lateral clamping assembly includes:

[0034] A support base, which is connected to the longitudinal plate;

[0035] A third connecting screw, one end of which is connected to the support base;

[0036] The third pressure block has a second strip hole and a second sliding groove. The extension direction of the second strip hole is the same as the extension direction of the second sliding groove. The end of the third connecting screw away from the support base passes through the second strip hole and is threadedly connected to the third locking nut.

[0037] The third support rod has one end connected to the support base, the axis of the third support rod is parallel to the axis of the third connecting screw, and the end of the third support rod away from the support base is slidably connected to the second sliding groove.

[0038] Optionally, the longitudinal plate is further provided with connecting screws, the axis of which is perpendicular to the transverse plate. The connecting screws are fitted with positioning discs, and the side of the positioning discs can abut against the rear reference surface of the gantry support.

[0039] Optionally, the sidewall of the transverse support member is provided with external threads, and the longitudinal plate is provided with a threaded hole that engages with the external threads.

[0040] The beneficial effects of this invention are:

[0041] The gantry support positioning fixture provided by this invention hoists the gantry support onto the fixture. The vertical direction of the gantry support is flush with the longitudinal support member, and the horizontal direction is flush with the lateral support member. Then, the clamping support assembly, the lateral clamping assembly, the longitudinal clamping assembly, and the transverse clamping assembly fix the gantry support, thereby fixing the gantry support in the vertical, horizontal, and front-back directions. The clamping force of the gantry support is then adjusted according to the vibration situation until there is no vibration or the vibration has no impact on the processing. This gantry support positioning fixture provides a dedicated positioning tool for the gantry support, which can adjust the clamping force according to the vibration generated during actual processing. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the gantry support positioning fixture provided by the present invention;

[0044] Figure 2 This is a schematic diagram of the base structure in this invention;

[0045] Figure 3 This is a schematic diagram of the compression support assembly in this invention;

[0046] Figure 4 This is a schematic diagram of the lateral support member in this invention;

[0047] Figure 5 This is a schematic diagram of the lateral clamping assembly in this invention;

[0048] Figure 6 This is a schematic diagram of the longitudinal support member in this invention;

[0049] Figure 7 This is a schematic diagram of the longitudinal clamping assembly in this invention;

[0050] Figure 8 This is a schematic diagram of the transverse support member in this invention;

[0051] Figure 9 This is a schematic diagram of the transverse clamping assembly in this invention;

[0052] Figure 10 This is a schematic diagram of the transverse clamping assembly in this invention;

[0053] Figure 11This is a schematic diagram of the positioning disk in this invention;

[0054] Figure 12 This is a schematic diagram of the structure of the gantry support positioning fixture provided by the present invention when it is used to fix and clamp the gantry support;

[0055] Figure 13 This is a schematic diagram of the gantry support in this invention.

[0056] In the picture:

[0057] 10. Portal support;

[0058] 100. Base; 110. Horizontal plate; 120. Vertical plate; 121. Connecting groove; 122. Connecting screw; 123. Positioning disc; 200. Pressing support assembly; 210. T-shaped support block; 220. First connecting screw; 221. First locking nut; 230. First pressure block; 231. Second through hole; 240. First support rod; 300. Lateral support component; 400. Lateral clamping assembly; 410. L-shaped bottom block; 420. Locking screw; 500. Longitudinal support component; 600. Longitudinal pressing assembly; 610. Support base; 620. Second connecting screw; 621. Second locking nut; 630. Second pressure block; 631. First slotted hole; 640. Second support rod; 650. Adjusting screw; 660. Support base; 700. Lateral support; 800. Lateral pressing assembly; 810. Support base; 820. Third connecting screw; 821. Third locking nut; 830. Third pressure block; 831. Second slotted hole; 832. Second slide groove; 840. Third support rod; 900. Lateral tightening assembly; 910. L-shaped support block; 920. Locking rod. Detailed Implementation

[0059] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0060] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0064] like Figures 1 to 13As shown, the present invention provides a gantry support positioning fixture, including a base 100, a clamping support assembly 200, a lateral support member 300, a lateral clamping assembly 400, a longitudinal support member 500, a longitudinal clamping assembly 600, a transverse support member 700, and a transverse clamping assembly 800. The base 100 includes a horizontal plate 110 and a vertical plate 120, with the vertical plate 120 perpendicular to the horizontal plate 110. The clamping support assembly 200 is disposed on the vertical plate 120 and is used to clamp the gantry support 10 in the front-rear direction. The lateral support member 300 is disposed on the vertical plate 120 and is used to support the gantry support 10 in the left-right direction. The lateral clamping assembly 400 is disposed on the vertical plate 120 and is used to clamp the gantry support 10 in the left-right direction against the lateral support member 300. The longitudinal support member 500... The longitudinal support 500 is installed on the horizontal plate 110 and is used to support the gantry support 10 in the vertical direction. The longitudinal pressing assembly 600 is installed on the horizontal plate 110 and is used to press the gantry support 10 in the vertical direction against the longitudinal support 500. The transverse support 700 is installed on the vertical plate 120 and is used to support the gantry support 10 in the front-back direction. The transverse pressing assembly 800 is installed on the vertical plate 120 and is used to press the gantry support 10 in the front-back direction against the transverse support 700.

[0065] The gantry support positioning fixture provided by this invention hoists the gantry support 10 onto the fixture. The vertical direction of the gantry support 10 is flush with the longitudinal support member 500, and the horizontal direction is flush with the lateral support member 300. Then, the clamping support assembly 200, the lateral clamping assembly 400, the longitudinal clamping assembly 600, and the transverse clamping assembly 800 fix the gantry support 10, thereby fixing the gantry support 10 in the vertical, horizontal, and front-back directions. The clamping force of the gantry support 10 is then adjusted according to the vibration situation until no vibration is generated or the vibration has no impact on the processing. This gantry support positioning fixture provides a dedicated positioning fixture for the gantry support 10, which can adjust the clamping force according to the vibration generated during actual processing.

[0066] In some embodiments, a lateral tightening assembly 900 is further provided on the horizontal plate 110, which is used to tighten the gantry support 10 in the left and right directions. Specifically, the lateral tightening assembly 900 includes an L-shaped support block 910 and a locking rod 920. The horizontal end of the L-shaped support block 910 is connected to the horizontal plate 110; the locking rod 920 is threadedly connected to the vertical end of the L-shaped support block 910. The locking rod 920 can tighten the gantry support 10 in the left and right directions. By rotating the locking rod 920, the locking rod 920 can extend and retract relative to the vertical end of the L-shaped support block 910, thereby achieving the tightening of the gantry support 10 in the left and right directions.

[0067] Optionally, the longitudinal plate 120 is also provided with a connecting screw 122. The axis of the connecting screw 122 is perpendicular to the transverse plate 110. The connecting screw 122 is fitted with a positioning disc 123. The side of the positioning disc 123 can abut against the rear reference surface of the gantry support 10. Through the above structure, the gantry support 10 can be referenced and positioned, ensuring the accuracy of positioning and clamping.

[0068] In some embodiments, the clamping support assembly 200 includes a T-shaped support block 210, a first connecting screw 220, a first pressing block 230, and a first support rod 240. The T-shaped support block 210 is engaged with a connecting groove 121 on the longitudinal plate 120. One end of the first connecting screw 220 is connected to the T-shaped support block 210. The first pressing block 230 has a first through hole and a second through hole 231. The end of the first connecting screw 220 away from the T-shaped support block 210 passes through the first through hole and is threadedly connected to the first locking nut 221. The first pressing block 230 presses the gantry support 10 in the front-back direction. One end of the first support rod 240 is connected to the longitudinal plate 120, and the axis of the first support rod 240 is parallel to the axis of the first connecting screw 220. The first support rod 240 slides through the second through hole 231. When it is necessary to press the gantry support 10 in the front-to-back direction, rotate the first locking nut 221. The first locking nut 221 moves relative to the first connecting screw 220, thereby driving the first pressure block 230 to move. The first pressure block 230 presses the gantry support 10 in the front-to-back direction. Moreover, by setting the first support rod 240 and the second through hole 231, during the movement of the first pressure block 230, the second through hole 231 slides relative to the first support rod 240. The first support rod 240 can guide the movement of the first pressure block 230 and ensure the stability of the first pressure block 230.

[0069] In some embodiments, the lateral clamping assembly 400 includes an L-shaped base block 410 and a locking screw 420. The horizontal end of the L-shaped base block 410 is connected to the longitudinal plate 120. The locking screw 420 is threadedly connected to the vertical end of the L-shaped base block 410. The locking screw 420 can clamp the gantry support 10 against the lateral support member 300 in the left and right directions. By rotating the locking screw 420, the locking screw 420 can extend and retract relative to the vertical end of the L-shaped base block 410, thereby clamping the gantry support 10 against the lateral support member 300 in the left and right directions.

[0070] In some embodiments, the longitudinal clamping assembly 600 includes a support base 610, a second connecting screw 620, a second pressure block 630, and a second support rod 640. The support base 610 is connected to the horizontal plate 110. One end of the second connecting screw 620 is connected to the support base 610. The second pressure block 630 has a first strip hole 631 and a first sliding groove. The extension direction of the first strip hole 631 is the same as the extension direction of the first sliding groove. The end of the second connecting screw 620 facing away from the support base 610 passes through the first strip hole 631 and is threadedly connected to the second locking nut 621. One end of the second support rod 640 is connected to the support base 610. The axis of the second support rod 640 is parallel to the axis of the second connecting screw 620. The end of the second support rod 640 facing away from the support base 610 is slidably connected to the first sliding groove. When it is necessary to press the gantry support 10 vertically, first adjust the second pressure block 630 according to the position where the gantry support 10 needs to be pressed. The first strip hole 631 moves relative to the second connecting screw 620, and the second support rod 640 slides relative to the first sliding groove. Then, rotate the second locking nut 621, which moves relative to the second connecting screw 620, thereby driving the second pressure block 630 to press down on the gantry support 10. The second pressure block 630 presses the gantry support 10 vertically against the longitudinal support member 500. Moreover, by setting the second support rod 640 and the first sliding groove, the second support rod 640 can guide the second pressure block 630, ensuring the stability of the second pressure block 630. As a preferred embodiment, the length of the second support rod 640 can be adjusted. For example, the second support rod 640 is threadedly connected to the support base 610. By rotating the second support rod 640, the second support rod 640 can extend or retract relative to the support base 610.

[0071] Optionally, an adjusting screw 650 is provided on the support base 610. The adjusting screw 650 is threadedly connected to a support seat 660. The support seat 660 is aligned with the second pressure block 630. The support seat 660 can support the gantry support 10 in the vertical direction. Through the above structure, the height of the support seat 660 can be adjusted by rotating the support seat 660 relative to the adjusting screw 650, thereby adapting to the bottom height of different specifications of gantry supports 10 and meeting the requirements for supporting the gantry supports 10 in the vertical direction of different specifications.

[0072] In some embodiments, the sidewall of the transverse support 700 is provided with external threads, and the longitudinal plate 120 is provided with a threaded hole that engages with the external threads. With the above structure, rotating the transverse support 700 can adjust the telescopic length of the transverse support 700 relative to the longitudinal plate 120.

[0073] In some embodiments, the transverse clamping assembly 800 includes a support base 810, a third connecting screw 820, a third pressure block 830, and a third support rod 840. The support base 810 is connected to the longitudinal plate 120. One end of the third connecting screw 820 is connected to the support base 810. The third pressure block 830 has a second strip hole 831 and a second groove 832. The extension direction of the second strip hole 831 is the same as the extension direction of the second groove 832. The end of the third connecting screw 820 facing away from the support base 810 passes through the second strip hole 831 and is threadedly connected to the third locking nut 821. One end of the third support rod 840 is connected to the support base 810. The axis of the third support rod 840 is parallel to the axis of the third connecting screw 820. The end of the third support rod 840 facing away from the support base 810 is slidably connected to the second groove 832. When it is necessary to press the gantry support 10 in the front-to-back direction, first adjust the third pressure block 830 according to the position where the gantry support 10 needs to be pressed. The second strip hole 831 moves relative to the third connecting screw 820, and the third support rod 840 slides relative to the second sliding groove 832. Then, rotate the third locking nut 821, which moves relative to the third connecting screw 820, thereby driving the third pressure block 830 to press against the gantry support 10. The third pressure block 830 presses the gantry support 10 in the front-to-back direction against the transverse support member 700. Moreover, by setting the third support rod 840 and the second sliding groove 832, the third support rod 840 can guide the third pressure block 830, ensuring the stability of the third pressure block 830. As a preferred embodiment, the length of the third support rod 840 can be adjusted. For example, the third support rod 840 is threadedly connected to the support base 810. By rotating the third support rod 840, the third support rod 840 can extend or retract relative to the support base 810.

[0074] The working principle of the gantry support positioning fixture provided by this invention is as follows:

[0075] In use, the gantry support 10 is hoisted onto the gantry support positioning fixture, with the rear reference surface of the gantry support 10 flush with the side of the positioning disc 123, the vertical direction of the gantry support 10 flush with the longitudinal support member 500, and the horizontal direction flush with the lateral support member 300. Then, the clamping support assembly 200, the longitudinal clamping assembly 600, and the horizontal clamping assembly 800 are used to initially clamp the gantry support 10, thus initially fixing it vertically, horizontally, and longitudinally. Next, the lateral clamping assembly 400, the horizontal support member 700, and the horizontal clamping assembly 900 are brought flush with the gantry support 10, and the support base 660 is brought flush with the gantry support 1. The bottom of the gantry support 10 is then pressed further by the clamping support assembly 200, the longitudinal clamping assembly 600, and the transverse clamping assembly 800, so that the vertical, horizontal, and front-back directions of the gantry support 10 are further fixed. The machine tool performs trial processing on the gantry support 10, and adjusts the clamping force of the gantry support 10 according to the vibration of the trial processing. The clamping force of the clamping support assembly 200, the lateral clamping assembly 400, the longitudinal clamping assembly 600, the transverse clamping assembly 800, and the transverse clamping assembly 900 on the gantry support 10 is adjusted until there is no vibration or the vibration has no effect on the processing. Finally, the gantry support 10 is machined.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gantry support positioning fixture, characterized in that, include: A base, the base comprising a horizontal plate and a vertical plate, the vertical plate being arranged perpendicularly to the horizontal plate; A clamping support assembly, disposed on the longitudinal plate, configured to clamp the gantry support in the front-rear direction; the clamping support assembly includes: The T-shaped support block engages with the connecting slot on the longitudinal plate. A first connecting screw, one end of which is connected to the T-shaped support block; The first pressure block has a first through hole and a second through hole. The end of the first connecting screw that is away from the T-shaped support block passes through the first through hole and is threadedly connected to the first locking nut. The first pressure block presses the gantry support in the front-rear direction. A first support rod, one end of which is connected to the longitudinal plate, and the axis of the first support rod is parallel to the axis of the first connecting screw, and the first support rod is slidably inserted through the second through hole; A lateral support member is disposed on the longitudinal plate and is configured to support the gantry support in the lateral direction. A lateral clamping assembly is disposed on the longitudinal plate and configured to clamp the gantry support to the lateral support in the lateral direction. A longitudinal support member is disposed on the transverse plate and is configured to support the gantry support in the vertical direction. A longitudinal clamping assembly, disposed on the transverse plate, is configured to press the gantry support vertically against the longitudinal support member; the longitudinal clamping assembly includes: A support base, which is connected to the horizontal plate; A second connecting screw, one end of which is connected to the support base; The second pressure block has a first strip hole and a first sliding groove. The extension direction of the first strip hole is the same as the extension direction of the first sliding groove. The end of the second connecting screw away from the support base passes through the first strip hole and is threadedly connected to the second locking nut. The second support rod has one end connected to the support base, the axis of the second support rod is parallel to the axis of the second connecting screw, and the end of the second support rod away from the support base is slidably connected to the first sliding groove. A transverse support member is disposed on the longitudinal plate and is configured to support the gantry support in the front-rear direction. A transverse clamping assembly is disposed on the longitudinal plate and configured to press the gantry support against the transverse support in the front-rear direction. The horizontal plate is also provided with a lateral clamping assembly, which is configured to clamp the gantry support in the lateral direction; the lateral clamping assembly includes: L-shaped support block, the horizontal end of which is connected to the horizontal plate; A locking rod is threaded to the vertical end of the L-shaped support block, and the locking rod can tighten the gantry support in the left and right directions.

2. The gantry support positioning fixture according to claim 1, characterized in that, The lateral clamping assembly includes: The horizontal end of the L-shaped base block is connected to the longitudinal plate; A locking screw is threaded to the vertical end of the L-shaped base block, and the locking screw can press the gantry support against the lateral support in the left and right directions.

3. The gantry support positioning fixture according to claim 1, characterized in that, An adjusting screw is provided on the support base, and the adjusting screw is threadedly connected to a support seat. The support seat is aligned with the second pressure block, and the support seat can support the gantry support in the vertical direction.

4. The gantry support positioning fixture according to claim 1, characterized in that, The lateral clamping assembly includes: A support base, which is connected to the longitudinal plate; A third connecting screw, one end of which is connected to the support base; The third pressure block has a second strip hole and a second sliding groove. The extension direction of the second strip hole is the same as the extension direction of the second sliding groove. The end of the third connecting screw away from the support base passes through the second strip hole and is threadedly connected to the third locking nut. The third support rod has one end connected to the support base, the axis of the third support rod is parallel to the axis of the third connecting screw, and the end of the third support rod away from the support base is slidably connected to the second sliding groove.

5. The gantry support positioning fixture according to claim 1, characterized in that, The longitudinal plate is also provided with connecting screws, the axis of which is perpendicular to the transverse plate. The connecting screws are fitted with positioning discs, and the side of the positioning discs can abut against the rear reference surface of the gantry support.

6. The gantry support positioning fixture according to any one of claims 1-5, characterized in that, The sidewall of the transverse support is provided with external threads, and the longitudinal plate is provided with a threaded hole that engages with the external threads.

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