Crank arm underframe workpiece assembly tool for ladder truck

Abstract

The utility model relates to the technical field of assembly tools, in particular to a ladder truck crank arm underframe workpiece assembly tool which comprises an operation table, a side fixing part for supporting an underframe outer side plate and an end plate is arranged on the upper end face of the operation table in a fixed structure mode, and a supporting block for supporting an underframe bearing plate is further arranged on the upper end face of the operation table. The supporting blocks are arranged on the upper end face of the operation table in a fixed structure mode, the inner threaded sleeve is arranged on the upper end face, on one side of the supporting blocks, of the operation table in a fixed structure mode, the inner threaded sleeve is provided with a bolt and a pressing plate used for pressing a bearing plate to the supporting blocks in a threaded meshing structure mode, and the pressing plate is provided with a through hole for the bolt to penetrate through. The pressing plate is convenient to take and place under the condition that the bolt is not detached, the locking plate is arranged between the pressing plate and the head of the bolt in a detachable structure mode, the bolt tightly presses the pressing plate on the bearing plate through the locking plate, the bearing plate can be rapidly fixed, and the working efficiency is improved.

Description

Technical fields:

[0001] This application relates to the field of assembly tooling technology, and in particular to assembly tooling for workpieces on the articulated boom underframe of a ladder truck. Background technology:

[0002] Aerial work platforms, also known as aerial work vehicles, are specialized vehicles used to transport workers and equipment to the site for aerial work. The chassis of such vehicles typically consists of a frame composed of outer side plates 11, end plates 12, and bearing plates 13. This frame is connected to the upper articulated boom by a slewing bearing mounted on the bearing plate 13 to meet the requirement of 360-degree rotation of the articulated boom.

[0003] Chinese invention patent application number 202111440087.0—a riveting and welding fixture for the chassis of an aerial work platform vehicle—includes a fixture base plate, which is provided with end fixing components and two sets of side fixing components, and the two sets of side fixing components are arranged on the tail side of the fixture base plate and symmetrically distributed; a clamping assembly is located on the fixture base plate, and the clamping assembly is provided in two sets with symmetrical portions on the fixture base plate, and a drive assembly is installed on each set of clamping assemblies.

[0004] The patent application provides relatively accurate positioning of the outer plate 11 and the end plate 12, but it does not have an effective structure to position and fix the bearing plate 13 in the position of the outer plate 11, which can easily lead to large installation deviations and poor yield. Utility Model Content:

[0005] To solve the above-mentioned technical problems, this utility model provides a tooling for assembling the workpiece of the articulated boom frame of an aerial work platform. The technical problem it solves is that existing tooling lacks an effective structure for positioning and fixing the bearing plate on the outer side plate, which easily leads to significant installation deviations. To solve the above-mentioned technical problems, the technical solution adopted by this utility model is:

[0006] The workpiece assembly fixture for the articulated boom frame of the aerial work platform includes an operating platform. The upper surface of the operating platform is equipped with side fixing components that provide support for the outer side plates and end plates of the frame. It also includes:

[0007] Support blocks that support the bearing plate of the base frame are fixedly mounted on the upper surface of the operating table.

[0008] An internal threaded sleeve is fixedly mounted on the upper surface of the operating platform on one side of the support block.

[0009] Bolts are connected to internally threaded sleeves via a threaded engagement structure.

[0010] The pressure plate has through holes for bolts to pass through;

[0011] A locking plate is provided between the pressure plate and the bolt head in a detachable manner.

[0012] Tapered locating pins, at least two tapered locating pins are fixedly arranged on the upper surface of the operating table around the internal threaded sleeve.

[0013] Furthermore, the bolt is a hole bolt.

[0014] Furthermore, the locking plate is configured with a hook structure.

[0015] Furthermore, there are two tapered locating pins, and the lower end face of the tapered locating pin is provided with a mounting base in a fixed structure, which is fixedly connected to the operating table.

[0016] Furthermore, the operating platform is equipped with a clamping mechanism for positioning the base frame sleeve.

[0017] Furthermore, the clamping mechanism includes a support leg, a fixed cylinder is fixedly mounted on the support leg, an adjusting rod is slidably mounted inside the fixed cylinder with a telescopic structure, two jaws are mounted on one end of the adjusting rod, one side of the two jaws is in contact with the end of the adjusting rod, and a push block is also provided to drive the two jaws to reciprocate radially along the fixed cylinder. The push block is provided with an adjusting bolt through a threaded engagement structure, and the adjusting bolt is connected to the adjusting rod through a rotating structure.

[0018] Furthermore, each of the two grippers has an inclined surface A on its opposite sidewalls. The two inclined surfaces A are symmetrically arranged in a figure-eight shape. Each of the two inclined surfaces has a T-shaped groove, and a T-shaped block is installed in the T-shaped groove through a sliding structure.

[0019] Both sides of the push block are provided with inclined surfaces B that slide with inclined surface A. Inclined surfaces B are connected to the T-block in a fixed structure.

[0020] Furthermore, the side wall of the adjusting rod is provided with a sliding groove, and the fixed cylinder is provided with a positioning bolt by means of threaded engagement, with one end of the positioning bolt passing through the side wall of the fixed cylinder and extending into the sliding groove.

[0021] The beneficial effects of this utility model are: by setting at least two tapered positioning pins to engage with the mounting holes on the bearing plate, the bearing plate can be positioned; and by using the cooperation of the internal threaded sleeve, bolts, pressure plate and locking plate, the bearing plate can be quickly fixed, thus improving work efficiency. Attached image description:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is an exploded view of the internal threaded sleeve, bolt, pressure plate, and locking plate structure of this utility model.

[0024] Figure 3This is an exploded view of the connection structure between the tapered positioning pin and the mounting base of this utility model.

[0025] Figure 4 This is a three-dimensional schematic diagram of the clamping mechanism of this utility model.

[0026] Figure 5 This is a schematic diagram of the exploded structure of the pusher and gripper of this utility model.

[0027] Figure 6 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0028] In the picture:

[0029] 1. Operating table; 2. Side fixing component; 3. Support block; 4. Internal threaded sleeve; 5. Bolt; 6. Pressure plate; 7. Locking plate; 8. Tapered locating pin; 9. Clamping mechanism; 91. Support leg; 92. Fixing cylinder; 93. Adjusting rod; 94. Push block; 95. T-slot; 96. T-block; 97. Slide groove; 98. Adjusting bolt; 99. Clamping claw; 10. Mounting base; 11. Outer side plate; 12. End plate; 13. Bearing plate; 14. Sleeve. Detailed implementation method:

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0031] The workpiece assembly fixture for the articulated boom frame of the aerial work platform includes an operating platform 1. A side fixing component 2, which supports the outer side plate 11 and end plate 12 of the base frame, is fixedly installed on the upper surface of the operating platform 1. The fixture is characterized by further including support blocks 3 for supporting the bearing plate 13 of the base frame. Several support blocks 3 are fixedly installed on the upper surface of the operating platform 1. An internally threaded sleeve 4 is fixedly installed on the upper surface of the operating platform 1 on one side of the support block 3. Bolts 5 are installed on the internally threaded sleeve 4 through a threaded engagement structure to press the bearing plate 13 tightly against the support block 3. Plate 6 and pressure plate 6 have through holes for bolts 5 to pass through, making it easy to put on and take off the pressure plate 6 without removing the bolts 5. A locking plate 7 is set between the pressure plate 6 and the head of the bolts 5 in a detachable manner. The bolts 5 press the pressure plate 6 against the bearing plate 13 through the locking plate 7, which can quickly fix the bearing plate and speed up the work efficiency. At least two tapered positioning pins 8 are set on the upper end face of the operating table 1 around the internal thread sleeve 4 in a fixed manner. They are inserted and cooperate with the mounting holes on the bearing plate 13 to complete the positioning of the bearing plate 13 and improve the positioning accuracy.

[0032] It should be noted that bolt 5 is a hole bolt, which facilitates disassembly from the internally threaded sleeve 4.

[0033] Specifically, the locking plate 7 is designed with a hook structure, which makes it easy to pick up and put down, and also increases the area for distributing force.

[0034] It should be noted that there are two tapered locating pins 8, which are symmetrically arranged on both sides of the internal thread sleeve 4. The internal thread sleeve 4 is installed at the center of the bearing plate mounting hole. The lower end face of the tapered locating pin 8 is provided with a mounting seat 10 in a fixed structure, and the mounting seat 10 is fixedly connected to the operating table 1.

[0035] The side fixing component includes a fixing leg, and the fixing leg is equipped with a cylinder.

[0036] Based on the above embodiments, in this embodiment, the operating table 1 is provided with a clamping mechanism 9 for positioning the base sleeve 14. By setting the clamping mechanism 9, the sleeve 14 is fixed to the end plate 12, which facilitates the welding of the sleeve.

[0037] Specifically, the clamping mechanism 9 includes a support leg 91, a fixed cylinder 92 is fixedly mounted on the support leg 91, an adjusting rod 93 is slidably mounted inside the fixed cylinder 92 with a telescopic structure, a sliding groove 97 is provided on the side wall of the adjusting rod 93, and a positioning bolt is provided on the fixed cylinder 92 by means of threaded engagement. One end of the positioning bolt passes through the side wall of the fixed cylinder 92 and extends into the sliding groove 97. Through the cooperation between the positioning bolt and the sliding groove 97, the adjusting rod 93 can be allowed to move axially within the fixed cylinder 92, and the adjusting rod 93 can be prevented from being pulled out within the fixed cylinder 92.

[0038] Two grippers 99 are provided at one end of the adjusting rod 93. The side of the two grippers 99 closest to the adjusting rod is in contact with the end face of the adjusting rod 93. A push block 94 is also provided to drive the two grippers 99 to reciprocate radially along the fixed cylinder 92. An adjusting bolt 98 is provided on the push block 94 through a threaded engagement structure. The adjusting bolt 98 is connected to the adjusting rod 93 through a rotating structure. The adjusting bolt 98 can only rotate relative to the adjusting rod 93. When rotating, it engages with the push block 94 through a thread, thereby driving the push block 94 to move.

[0039] It should be noted that the two grippers 99 are provided with inclined surfaces A on their opposite sidewalls. The two inclined surfaces A are symmetrically arranged in a figure-eight shape. Both inclined surfaces are provided with T-slots 95. T-blocks 96 are provided in the T-slots 95 through a sliding structure. The two sidewalls of the push block 94 are provided with inclined surfaces B that slide with the inclined surfaces A. The inclined surfaces B and the T-blocks 96 are connected by a fixed structure. The connection between the T-slots 95 and the T-blocks 96 can be ensured to be stable. It should be noted that one end of the T-slot 95 is connected to the outer end face of the gripper 99, and the other end is not connected to the inner end face of the gripper 99 to prevent the gripper 99 from disengaging from the push block 94.

[0040] The working principle and process of this utility model are as follows:

[0041] First, lift the bearing plate 13 above the tapered locating pin 8, then slowly lower it. Insert the two mounting holes into the outside of the tapered locating pin 8. Then place the pressure plate 6 on the upper end face of the bearing plate 13. The through hole of the pressure plate 6 is fitted onto the outside of the bolt 6. Then hook the locking plate 7 onto the rod of the bolt 5. Then rotate the bolt 5 to press the locking plate 7 onto the pressure plate 6. In turn, the pressure plate 6 presses the bearing plate 13 onto the support block 3.

[0042] Then, the outer side plate 11 and the end plate 12 are placed in their respective positions and fixed using the cylinders of the side fixing components.

[0043] Place the sleeve 14 outside the gripper 99, rotate the adjusting bolt 98, the adjusting bolt 98 is rotatably connected to the adjusting rod 93, and when rotated, it engages with the push block 94 through the thread, thereby driving the push block 94 to move toward the adjusting rod 93. The structure of the push block 94 with its large and small ends drives the gripper 99 to move to both sides, thereby tightening the sleeve. Push the adjusting rod 93 to move the sleeve 14 closer to the hole on the end plate 12 until the sleeve 14 reaches the predetermined installation position. Then rotate the positioning bolt to abut against the bottom wall of the slide groove 97, and then perform the welding work.

[0044] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A workpiece assembly fixture for a boom lift, comprising an operating table (1), wherein the upper surface of the operating table (1) is provided with a side fixing component (2) for supporting the outer side plate (11) and the end plate (12) of the boom lift, characterized in that, It also includes: Support blocks (3) that support the base frame bearing plate (13) are arranged on the upper surface of the operating table (1) in a fixed structure. The internal threaded sleeve (4) is fixedly mounted on the upper end face of the operating table (1) on one side of the support block (3); Bolt (5) is connected to the internal threaded sleeve (4) by a threaded engagement structure; Pressure plate (6) has through holes for bolts (5) to pass through; Locking plate (7) is provided between the pressure plate (6) and the head of the bolt (5) in a detachable manner; Tapered locating pins (8), at least two tapered locating pins (8) are fixedly arranged on the upper end face of the operating table (1) around the internal threaded sleeve (4).

2. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 1, characterized in that: Bolt (5) is a hole bolt.

3. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 1, characterized in that: The locking plate (7) is set in the form of a hook structure.

4. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 1, characterized in that: There are two tapered positioning pins (8). The lower end face of the tapered positioning pin (8) is provided with a mounting base (10) in a fixed structure. The mounting base (10) is fixedly connected to the operating table (1).

5. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 1, characterized in that: The control panel (1) is equipped with a clamping mechanism (9) for positioning the base sleeve (14).

6. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 5, characterized in that: The clamping mechanism (9) includes a support leg (91), a fixed cylinder (92) is fixedly provided on the support leg (91), an adjusting rod (93) is slidably provided in the fixed cylinder (92) with a telescopic structure, two jaws (99) are provided at one end of the adjusting rod (93), one side of the two jaws (99) is in contact with the end of the adjusting rod (93), and a push block (94) is provided to drive the two jaws (99) to reciprocate radially along the fixed cylinder (92), and an adjusting bolt (98) is provided on the push block (94) through a threaded engagement structure, and the adjusting bolt (98) is connected to the adjusting rod (93) in a rotating structure.

7. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 6, characterized in that: The two grippers (99) are provided with inclined surfaces A on their opposite sidewalls. The two inclined surfaces A are symmetrically arranged in a figure-eight shape. Both inclined surfaces are provided with T-slots (95). T-blocks (96) are provided in the T-slots (95) through a sliding structure. Both sides of the push block (94) are provided with inclined surfaces B that slide with the inclined surface A. The inclined surfaces B are connected to the T-block (96) in a fixed structure.

8. The workpiece assembly fixture for the articulated boom underframe of the aerial work platform according to claim 6, characterized in that: The adjusting rod (93) has a sliding groove (97) on its side wall, and the fixed cylinder (92) has a positioning bolt by means of thread engagement. One end of the positioning bolt passes through the side wall of the fixed cylinder (92) and extends into the sliding groove (97).

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