Saddle frame positioning device

Abstract

The application discloses a saddle frame positioning device, which comprises a bottom plate, a supporting structure, a clamping structure and a centering structure. The centering structure comprises a fixing seat installed on the bottom plate. A containing hole is formed upward in the bottom of the fixing seat. A push rod is arranged in the containing hole. A sliding groove penetrating through the fixing seat is formed in the fixing seat corresponding to the push rod and along the longitudinal direction of the saddle frame positioning device. Two sliding blocks are slidably arranged in the sliding groove. The two sliding blocks are respectively located on the opposite sides of the push rod along the longitudinal direction and abut against the push rod. The push rod slides up and down to drive the two sliding blocks to slide along the sliding groove to extend out of the sliding groove or contract in the sliding groove, so that the two sliding blocks abut against or release the opposite inner side walls of the guide groove along the longitudinal direction. Through the structural design, the two welding parts of the wear-resistant ring seat plate are centered and limited in the longitudinal direction, the positioning precision is improved, and the positioning hole and the positioning pin are quickly and accurately positioned.

Description

Technical Field

[0001] This invention relates to the field of automotive parts positioning technology, specifically to a saddle frame positioning device. Background Technology

[0002] When assembling and welding the saddle frame of the trailer, a positioning device is needed to position the wear-resistant ring seat plate of the saddle frame to ensure its welding accuracy. The wear-resistant ring seat plate is provided with a guide groove and a positioning hole that penetrate the upper and lower surfaces of the wear-resistant ring seat plate. One end of the guide groove is open, and the opening separates one end of the wear-resistant ring seat plate into two welding parts. The positioning hole is located outside the guide groove and is located on the same side of the guide groove as one of the two welding parts. The existing saddle frame positioning device includes a base plate, a support structure for supporting the wear-resistant ring seat plate, a clamping structure, a positioning pin for engaging with the positioning hole, and a positioning structure. The support structure, clamping structure, positioning pin, and positioning structure are all mounted on the base plate. The clamping structure clamps the inner and outer walls of the wear-resistant ring seat plate. The positioning pin limits the wear-resistant ring seat plate in the radial direction of the positioning hole. The positioning structure is placed in the two welded parts to limit the wear-resistant ring seat plate in the width direction of the guide groove. However, when using the above-mentioned saddle frame positioning device to position the wear-resistant ring seat plate, it is very easy for the positioning hole to deviate from the positioning pin, causing the positioning pin to fail to engage with the positioning hole. This requires repositioning the wear-resistant ring seat plate, further reducing work efficiency. Therefore, it can be seen that the positioning accuracy and work efficiency of the existing saddle frame positioning device are low. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a saddle frame positioning device that can improve the positioning accuracy and working efficiency of wear-resistant ring seat plates.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A saddle frame positioning device, characterized in that it comprises: a base plate, a support structure for supporting a wear-resistant ring seat plate of a saddle frame, a clamping structure for clamping the wear-resistant ring seat plate, and a centering structure, wherein the support structure, the clamping structure, and the centering structure are mounted on the base plate.

[0006] The centering structure includes a fixed base mounted on the base plate. The bottom of the fixed base has an upward-facing receiving hole, and a push rod is disposed within the receiving hole. Corresponding to the push rod, the fixed base has a sliding groove extending through it along the longitudinal direction of the saddle frame positioning device. The sliding groove is located above the base plate, and two sliders are slidably embedded within it. The two sliders are located on opposite sides of the push rod along its longitudinal direction and abut against the push rod. The outer wall of the fixed base along its longitudinal direction has a fixing hole extending inwards corresponding to each slider. A fixing post is provided in the fixing hole. Each slider has a limiting groove extending along the longitudinal direction, which is recessed inward on the outer side wall of the fixing post. The fixing post extends into the limiting groove and the two are in clearance fit. The outer wall of the upper end of the push rod is in sliding fit with the outer walls of the two sliders. The diameter of the upper end of the push rod gradually decreases from bottom to top. A spring is provided between the slider and the fixing seat. Each slider has a mating groove that extends through the slider from top to bottom, which is recessed outward on the side wall near the push rod. The mating groove is in sliding fit with the outer side wall of the push rod.

[0007] The push rod slides up and down, causing the two sliders to slide along the groove to extend out of the groove or retract into the groove, so that the two sliders respectively abut against or release the guide groove of the wear-resistant ring seat plate along the opposite two inner sidewalls in the longitudinal direction.

[0008] Furthermore, the head diameter of the fixing post is larger than the diameter of the fixing hole and is correspondingly stopped outside the outer wall of the fixing seat.

[0009] Furthermore, it includes a drive unit mounted on the bottom of the base plate, the drive unit being connected to the lower end of the push rod.

[0010] Furthermore, a guide sleeve located below the slider is tightly fitted inside the receiving hole, and the inner wall of the guide sleeve slides in engagement with the outer wall of the push rod.

[0011] Furthermore, a positioning seat is installed on the top of the fixed seat, and a reference block is detachably connected to the outer side wall of the positioning seat along the longitudinal direction. The reference surface of the reference block is used to abut against the plate surface of the rear plate of the saddle frame.

[0012] Furthermore, the clamping structure includes a centering structure for engaging with the guide groove and a pressing structure corresponding to the centering structure. The outer wall of the centering structure is used to cooperate with the arc-shaped inner wall of the guide groove. The pressing structure is located outside the wear-resistant ring seat plate and the two abut against each other. The saddle frame positioning device also includes a positioning post fixed to the base plate. The positioning post is inserted upward into the positioning hole of the wear-resistant ring seat plate and the two cooperate. The centering structure is located in the guide groove and behind the centering structure. The lower end of the push rod is connected to a drive unit, which is a cylinder.

[0013] The saddle frame positioning device of the present invention provides a push rod in the receiving hole of the fixed seat, and two sliders are slidably embedded in the groove of the fixed seat. The two sliders are located on opposite sides of the push rod along the longitudinal direction and abut against the push rod. When positioning the wear-resistant ring seat plate, the push rod slides upward, causing the two sliders to slide outward along the groove to extend out of the groove. This causes the two sliders to abut against the opposite inner sidewalls of the guide groove along the longitudinal direction, thereby achieving centering and limiting of the two welded parts of the wear-resistant ring seat plate in the longitudinal direction, thus improving the positioning accuracy and enabling the positioning hole and positioning pin to be quickly and accurately aligned, further improving work efficiency. When the saddle frame is assembled and welded, the push rod slides downward, causing the two sliders to slide inward along the groove to retract into the groove. This causes the two sliders to release the opposite inner sidewalls of the guide groove along the longitudinal direction, thereby enabling the wear-resistant ring seat plate to be quickly removed. Attached Figure Description

[0014] Figure 1 This is a partial three-dimensional assembly schematic diagram of the saddle frame positioning device of the present invention;

[0015] Figure 2 for Figure 1 A three-dimensional exploded view of the split structure from another perspective;

[0016] Figure 3 for Figure 1 Usage status diagram;

[0017] Figure 4 for Figure 3 A cross-sectional view of the action process;

[0018] Figure 5 for Figure 4 A sectional view. Detailed Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0020] like Figures 1 to 5As shown, this embodiment of the invention provides a saddle frame positioning device for positioning the saddle frame during welding or spot welding of a truck saddle. The saddle frame positioning device includes: a base plate 1, a support structure 2 for supporting a wear-resistant ring seat plate 100 of the saddle frame, a clamping structure 3 for clamping the wear-resistant ring seat plate 100, and a centering structure 4. The support structure 2, the clamping structure 3, and the centering structure 4 are mounted on the base plate 1.

[0021] like Figure 1 , Figure 3 As shown, the base plate 1 is mounted on the workbench. The clamping structure 3 includes a centering structure 31 for engaging with the guide groove 102 and a pressing structure 32 corresponding to the centering structure 31. The centering structure 31 is columnar and its outer wall is used to cooperate with the arc-shaped inner wall of the guide groove 102 to axially position the wear-resistant ring seat plate 100. The pressing structure 32 is located outside the wear-resistant ring seat plate 100 and the two abut against each other. Specifically, the pressing structure 32 includes a cylinder (not shown) and a pressure head connected to the cylinder. The cylinder drives the pressure head to abut against the outer wall of the wear-resistant ring seat plate 100 to automatically press the wear-resistant ring seat plate 100 inward. The saddle frame positioning device also includes a positioning pin 6 fixed on the base plate 1. The positioning pin 6 is inserted upward into the positioning hole of the wear-resistant ring seat plate 100 and the two cooperate. The design of the positioning pin 6 can further limit the wear-resistant ring seat plate 100.

[0022] like Figure 1 , Figure 2 As shown, the centering structure 4 is located within the guide groove 102 (e.g., Figure 3 As shown, and located behind the centering structure 31, the centering structure 4 includes a fixed seat 41 mounted on the base plate 1 by a pin or screw. The bottom of the fixed seat 41 has an upward-facing receiving hole 411 that extends vertically through the fixed seat 41 and contains a push rod 42, which is columnar. The fixed seat 41, corresponding to the push rod 42, further has a groove 412 extending through the fixed seat 41 along the longitudinal direction of the saddle frame positioning device. The groove 412 is located above the base plate 1, and two sliders 43 are slidably embedded within it. The two sliders 43 are located on opposite sides of the push rod 42 along its longitudinal direction and abut against the push rod 42. In this embodiment, each slider 43 has a recessed mating groove 431 extending vertically through the sidewall near the push rod 42. The mating groove 431 slides against the outer sidewall of the push rod 42, and their shapes are compatible, further simplifying the connection structure between them. Figure 4 , Figure 5As shown, when the push rod 42 slides up and down, it drives the two sliders 43 to slide along the slide groove 412 to extend out of the slide groove 412 or retract into the slide groove 412, so that the two sliders 43 respectively abut against or release the two opposite inner sidewalls of the guide groove 102 along the longitudinal direction. Specifically, when positioning the wear-resistant ring seat plate 100, the push rod 42 slides upward, causing the two sliders 43 to slide outward along the slide groove 412 to extend outside the slide groove 412. This allows the two sliders 43 to abut against the two opposite inner sidewalls of the guide groove 102 along the longitudinal direction, thereby achieving the centering and limiting of the two welded parts 103 (the parts welded to the rear plate 101) of the wear-resistant ring seat plate 100 in the longitudinal direction, thus improving the positioning accuracy and enabling the positioning hole and positioning pin 6 to be quickly and accurately aligned, further improving work efficiency. When the saddle frame assembly welding is completed, the push rod 42 slides downward, causing the two sliders 43 to slide inward along the slide groove 412 to retract into the slide groove 412. This allows the two sliders 43 to release the two opposite inner sidewalls of the guide groove 102 along the longitudinal direction, thereby enabling the wear-resistant ring seat plate 100 to be quickly removed.

[0023] like Figure 1 , Figure 2 As shown, in a further preferred embodiment, the centering structure 4 further includes a limiting structure 44 for limiting the sliding stroke of the slider 43. The limiting structure 44 includes a limiting groove 441 provided on one of the fixed base 41 and the slider 43, and a fixing post 442 corresponding to the limiting groove 441 and provided on the other of the fixed base 41 and the slider 43. One end of the fixing post 442 extends into the limiting groove 441 and cooperates with the limiting groove 441. In this embodiment, a fixing post 442 is provided on the fixing base 41, and a limiting groove 441 is provided on the slider 43 corresponding to the fixing post 442. The limiting groove 441 extends along the longitudinal direction and is in clearance fit with the fixing post 442. More specifically, a fixing hole 413 is opened inward on the outer side wall of the fixing base 41 along the longitudinal direction for each slider 43. A fixing post 442 is provided in each fixing hole 413, and a limiting groove 441 is recessed inward on the outer side wall of each slider 43 corresponding to a fixing post 442. A fixing post 442 extends into a limiting groove 441 and the two are in clearance fit. The diameter of the head 4421 of the fixing post 442 is larger than the diameter of the fixing hole 413 and is stopped outside the outer side wall of the fixing base 41. The head 4421 of the fixing post 442 is designed to prevent it from falling off from the direction toward the slider 43. Of course, in other embodiments, the opposite can also be used, that is, a fixing post 442 is provided on the slider 43, and a limiting groove 441 is provided on the fixing seat 41 corresponding to the fixing post 442, with the limiting groove 441 extending along the longitudinal direction. The above-mentioned setting of the limiting post and the limiting groove 441 realizes the control of the sliding stroke of the slider 43.

[0024] like Figure 4 , Figure 5As shown, to improve positioning accuracy, in this embodiment, a guide sleeve 414 located below the slider 43 is tightly fitted inside the receiving hole 411. The inner wall of the guide sleeve 414 slides in engagement with the outer wall of the push rod 42, and the outer wall of the upper end of the push rod 42 slides in engagement with the outer walls of the two sliders 43. The diameter of the upper end of the push rod 42 gradually decreases from bottom to top. This upper end structure design of the push rod 42 enables the push rod 42 to push the slider 43 outward along the slide groove 412. A spring (not shown) connects the slider 43 and the fixed seat 41. The spring provides a spring force to the slider 43, causing the slider 43 to return to its original position.

[0025] like Figure 4 , Figure 5 As shown, in order to achieve automation, the saddle frame positioning device also includes a drive unit 5 installed on the bottom of the base plate 1. The drive unit 5 is connected to the lower end of the push rod 42. In this embodiment, the drive unit 5 is a cylinder, and the telescopic rod of the cylinder is connected to the bottom of the push rod 42, which drives the push rod 42 to move up and down.

[0026] like Figure 1 , Figure 3 As shown, in order to further simplify the structure and improve the positioning accuracy, a positioning seat 45 is installed on the top of the fixed seat 41. A reference block 451 is detachably connected to the outer side wall of the positioning seat 45 along the longitudinal direction. The reference surface of the reference block 451 is used to abut against the plate surface of the rear plate 101 of the saddle frame. The design of the reference block 451 can limit the rear plate 101 in the lateral direction of the saddle frame positioning device.

[0027] The saddle frame positioning device of the present invention provides a push rod in the receiving hole of the fixed seat, and two sliders are slidably embedded in the groove of the fixed seat. The two sliders are located on opposite sides of the push rod along the longitudinal direction and abut against the push rod. When positioning the wear-resistant ring seat plate, the push rod slides upward, causing the two sliders to slide outward along the groove to extend out of the groove. This causes the two sliders to abut against the opposite inner sidewalls of the guide groove along the longitudinal direction, thereby achieving centering and limiting of the two welded parts of the wear-resistant ring seat plate in the longitudinal direction, thus improving the positioning accuracy and enabling the positioning hole and positioning pin to be quickly and accurately aligned, further improving work efficiency. When the saddle frame is assembled and welded, the push rod slides downward, causing the two sliders to slide inward along the groove to retract into the groove. This causes the two sliders to release the opposite inner sidewalls of the guide groove along the longitudinal direction, thereby enabling the wear-resistant ring seat plate to be quickly removed.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A saddle frame positioning device, characterized in that, include: The base plate, the support structure for supporting the wear-resistant ring seat plate of the saddle frame, the clamping structure for clamping the wear-resistant ring seat plate, and the centering structure are mounted on the base plate. The centering structure includes a fixed base mounted on the base plate. The bottom of the fixed base has an upward-facing receiving hole, and a push rod is disposed within the receiving hole. Corresponding to the push rod, the fixed base has a through-groove extending along the longitudinal direction of the saddle frame positioning device. The groove is located above the base plate, and two sliders are slidably embedded within the groove. The two sliders are located on opposite sides of the push rod along its longitudinal direction and abut against the push rod. The centering structure also includes a limiting structure for restricting the sliding stroke of the sliders. The limiting structure includes a limiting groove on one of the fixed base and the sliders, and a fixing post corresponding to the limiting groove and disposed on the other of the fixed base and the sliders. One end of the column extends into the limiting groove and engages with it. The outer wall of the fixing seat along the longitudinal direction is provided with a fixing hole corresponding to each slider. A fixing post is provided in each fixing hole. The outer wall of each slider is recessed inward with a limiting groove extending along the longitudinal direction corresponding to a fixing post. A fixing post extends into a limiting groove and the two are fitted with a clearance. The outer wall of the upper end of the push rod is slidably engaged with the outer walls of the two sliders. The diameter of the upper end of the push rod gradually decreases from bottom to top. A spring is provided between the slider and the fixing seat. Each slider has a mating groove that extends through the slider from top to bottom and is recessed outward on the side wall near the push rod. The mating groove is slidably engaged with the outer wall of the push rod. The push rod slides up and down, causing the two sliders to slide along the groove to extend out of the groove or retract into the groove, so that the two sliders respectively abut against or release the guide groove of the wear-resistant ring seat plate along the opposite two inner sidewalls in the longitudinal direction.

2. The saddle frame positioning device as described in claim 1, characterized in that, The head diameter of the fixing post is larger than the diameter of the fixing hole and is correspondingly stopped outside the outer wall of the fixing seat.

3. The saddle frame positioning device as described in claim 1, characterized in that, It includes a drive unit mounted on the bottom of the base plate, the drive unit being connected to the lower end of the push rod.

4. The saddle frame positioning device as described in claim 1, characterized in that, The receiving hole is fitted with a guide sleeve located below the slider, and the inner wall of the guide sleeve slides in contact with the outer wall of the push rod.

5. The saddle frame positioning device as described in claim 1, characterized in that, A positioning seat is installed on the top of the fixed seat, and a reference block is detachably connected to the outer side wall of the positioning seat along the longitudinal direction. The reference surface of the reference block is used to abut against the plate surface of the rear plate of the saddle frame.

6. The saddle frame positioning device as described in claim 1, characterized in that, The clamping structure includes a centering structure for engaging with the guide groove and a pressing structure corresponding to the centering structure. The outer wall of the centering structure engages with the arc-shaped inner wall of the guide groove. The pressing structure is located outside the wear-resistant ring seat plate and the two abut against each other. The saddle frame positioning device also includes a positioning post fixed to the base plate. The positioning post is inserted upward into the positioning hole of the wear-resistant ring seat plate and the two engage. The centering structure is located in the guide groove and behind the centering structure. The lower end of the push rod is connected to a drive unit, which is a cylinder.

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