Universal type movable arm bucket rod horizontal positioning tool

Abstract

The utility model belongs to the technical field of positioning tools, and relates to a universal movable arm bucket rod horizontal positioning tool which comprises a bottom plate, at least two lower supporting pieces, at least two side blocking pieces and three shaft hole positioning assemblies. A plurality of positioning holes used for fixing the lower supporting pieces or the side blocking pieces or the shaft hole positioning assemblies are formed in the bottom plate in an array mode. The lower supporting piece comprises a supporting face located on the upper portion and a pair of positioning parts located on the two sides of the lower portion, and each positioning part is provided with a through hole used for being fixed to a positioning hole bolt. The side blocking piece comprises a bottom surface part and a side blocking part which are vertically connected, and the bottom surface part is provided with a waist-shaped hole which is fixed with a positioning hole bolt; the shaft hole positioning assembly comprises a lower translation mechanism, an upper translation mechanism, a sliding table, a threaded seat and a threaded positioning shaft which are sequentially connected from bottom to top. According to the positioning tool, the positions of the lower supporting piece, the side blocking piece and the shaft hole positioning assembly can be adjusted on the bottom plate, and therefore the positioning requirements of various movable arms or bucket rods are met.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning tools, and particularly relates to a general boom and stick horizontal positioning tool. Background Art

[0002] The boom and stick refer to a working device of an excavator, and their main functions are to control the excavation, loading and other actions of the bucket. The boom is connected to the frame and has a relatively long arm length, so it is commonly called the "big arm"; the stick is connected to the bucket and has a relatively short arm length, so it is commonly called the "small arm". The working device of the excavator adopts the principle of a linkage mechanism, and the movement of each part is realized by the telescopic movement of the oil cylinder. All the connections between the components of the backhoe working device are hinged, and various actions during the excavation process are realized by changing the stroke of each oil cylinder. The stick is hinged to the upper end of the boom, and by changing the stroke of the oil cylinder installed on the upper plane of the boom beam, the stick rotates around the hinge point at the upper end of the boom. The bucket is hinged to the lower end of the stick, and by changing the stroke of the oil cylinder installed on the lower surface of the stick arm beam, the bucket rotates around the hinge point at the lower end of the stick.

[0003] Chinese Patent CN201380379Y discloses a welding fixture for an excavator stick, which can support the side of the horizontally placed stick by using a cushion block, press the upper and lower surfaces of the stick by using a pressing device, and limit the position of the cylinder hole by using a positioning shaft. The cushion block, pressing device and positioning shaft of this fixture are all fixedly connected to the bottom plate, so it can only be applicable to one style of stick, which will lead to the need to re - design the fixture when welding different sticks or booms.

[0004] Therefore, it is necessary to improve the structure of the positioning tool to solve the above problems. Summary of the Invention

[0005] The main purpose of the utility model is to provide a general boom and stick horizontal positioning tool, which can meet the positioning needs of various booms or sticks.

[0006] The utility model realizes the above purpose through the following technical scheme: a general boom and stick horizontal positioning tool, including a bottom plate, at least two lower support members, at least two side blocking members and three shaft hole positioning components;

[0007] A plurality of positioning holes for fixing the lower support member, the side blocking member or the shaft hole positioning component are arranged in an array on the bottom plate, and the center - to - center distance between adjacent positioning holes is a;

[0008] The lower support member includes a support surface at the upper part and a pair of positioning parts at the lower part on both sides. Each positioning part is provided with a through - hole for bolt - fixing with the positioning hole, and the center - to - center distance of the two through - holes is

[0009] The side baffle includes a bottom surface portion and a side baffle portion that are vertically connected. The bottom surface portion is provided with a waist-shaped hole for bolt fixation with the positioning hole, and the length of the waist-shaped hole is not less than

[0010] The shaft hole positioning assembly includes a lower translation mechanism, an upper translation mechanism, a sliding table, a threaded seat, and a threaded positioning shaft that are sequentially connected from bottom to top. The lower translation mechanism drives the upper translation mechanism to move relative to the bottom plate in a first direction, and the upper translation mechanism drives the sliding table to move relative to the lower translation mechanism in a second direction. The first direction and the second direction are perpendicular and both are in the horizontal plane. The adjustment interval lengths of the lower translation mechanism and the upper translation mechanism are not less than a. The axis of the threaded seat is vertically fixed on the upper surface of the sliding table, and the lower part of the threaded positioning shaft has a threaded portion that is threadedly engaged with the threaded seat.

[0011] Specifically, it includes a bottom plate, at least two lower support members, at least two side baffles, and three shaft hole positioning assemblies;

[0012] A plurality of positioning holes are arranged in an array on the bottom plate, and the center distance between adjacent positioning holes is a;

[0013] The lower support member includes a support surface at the upper part and a pair of positioning portions on both sides at the lower part. Each positioning portion is provided with a through hole for bolt fixation with the positioning hole, and the center distance between the two through holes is

[0014] The side baffle includes a bottom surface portion and a side baffle portion that are vertically connected. The bottom surface portion is provided with a waist-shaped hole for bolt fixation with the positioning hole, and the length of the waist-shaped hole is not less than

[0015] The shaft hole positioning assembly includes a lower translation mechanism, an upper translation mechanism, a sliding table, a threaded seat, and a threaded positioning shaft that are sequentially connected from bottom to top. The lower translation mechanism drives the upper translation mechanism to move relative to the bottom plate in a first direction, and the upper translation mechanism drives the sliding table to move relative to the lower translation mechanism in a second direction. The first direction and the second direction are perpendicular and both are in the horizontal plane. The axis of the threaded seat is vertically fixed on the upper surface of the sliding table, and the lower part of the threaded positioning shaft has a threaded portion that is threadedly engaged with the threaded seat.

[0016] Specifically, two buffer pads are provided on the support surface.

[0017] Specifically, the lower translation mechanism has the same structure as the upper translation mechanism, and both include a fixing plate, a lead screw rotatably arranged above the fixing plate, a cam for adjusting the rotation angle of the lead screw, a nut sleeve threadedly engaged with the lead screw, slide rails arranged in parallel on both sides of the lead screw, and sliders engaged with the slide rails; the sliders and the nut sleeve of the lower translation mechanism are fixed to the fixing plate of the upper translation mechanism, and the sliders and the nut sleeve of the upper translation mechanism are fixed to the sliding table.

[0018] Specifically, a plurality of limit nut sleeves are threadedly engaged with the threaded positioning shaft.

[0019] Specifically, a rotating handle is provided at the upper part of the threaded positioning shaft, and the rotating handle penetrates through the top of the threaded positioning shaft along the radial direction.

[0020] The beneficial effects of the technical solution of the present utility model are:

[0021] This positioning tooling can support the downward side of the boom by using two lower supporting members, perform side positioning on the back of the boom by using two side blocking members, and perform coaxiality positioning on the pin holes on the fins at the head, tail, and back of the boom by using three shaft hole positioning components. The lower supporting members, side blocking members, and shaft hole positioning components can all be adjusted in position on the bottom plate, so as to meet the positioning requirements of various booms or dippers. Description of the Drawings

[0022] Figure 1 It is a top view when implementing the dipper positioning tooling;

[0023] Figure 2 It is a three-dimensional view of the dipper positioning tooling when positioning a certain boom;

[0024] Figure 3 It is a three-dimensional view of the lower supporting member;

[0025] Figure 4 It is a side blocking member;

[0026] Figure 5 It is a three-dimensional view of the shaft hole positioning component.

[0027] The numbers in the figure represent:

[0028] 1 - positioning tooling,

[0029] 11 - bottom plate, 111 - positioning hole,

[0030] 12 - lower supporting member, 121 - supporting surface, 122 - positioning part, 1221 - through hole, 123 - buffer pad,

[0031] 13 - side blocking member, 131 - bottom surface part, 1311 - waist-shaped hole, 132 - side blocking part,

[0032] 14 - Axle - hole positioning assembly, 141a - Lower translation mechanism, 141b - Upper translation mechanism, 1411 - Fixed plate, 1412 - Lead screw, 1413 - Cam, 1414 - Nut sleeve, 1415 - Slide rail, 1416 - Slide block, 142 - Slide table, 143 - Threaded seat, 144 - Threaded positioning shaft, 145 - Limit nut sleeve, 146 - Turning handle;

[0033] 2 - Boom, 21 - Head wing plate, 22 - Tail wing plate, 23 - Back wing plate. Specific implementation mode

[0034] The following further elaborates on the present utility model in conjunction with specific embodiments.

[0035] Embodiment:

[0036] As Figure 1 and Figure 2 shown, a general - type boom - bucket - stick horizontal positioning tooling 1 of the present utility model includes a bottom plate 11, at least two lower supporting members 12, at least two side - blocking members 13, and three axle - hole positioning assemblies 14.

[0037] As Figure 1 shown, a plurality of positioning holes 111 for fixing the lower supporting member 12, side - blocking member 13, or axle - hole positioning assembly 14 are arranged in an array on the bottom plate 11, and the center - to - center distance between adjacent positioning holes 111 is a.

[0038] The bottom plate 11 is the fixed foundation of the entire positioning tooling 1. The positioning holes 111 provide many optional fixed positions for the lower supporting member 12, side - blocking member 13, and axle - hole positioning assembly 14. When the range of the bottom plate 11 is large enough, it can adapt to multiple types of booms 2. The lower supporting member 12 supports the downward side of the boom 2, the side - blocking member 13 performs lateral positioning on the back of the boom 2, and the three axle - hole positioning assemblies perform coaxiality positioning on the pin holes on the head wing plate 21, tail wing plate 22, and back wing plate 23 of the boom 2. The lower supporting member 12, side - blocking member 13, and axle - hole positioning assembly 14 can all be adjusted in position on the bottom plate 1, so as to meet the positioning requirements of various booms 2. This positioning tooling 1 is also applicable to various bucket - sticks.

[0039] As Figure 3 shown, the lower supporting member 12 includes a supporting surface 121 at the upper part and a pair of positioning parts 122 at the lower - part sides. Each positioning part 122 is provided with a through - hole 1221 for bolt - fixing with the positioning hole 111, and the center - to - center distance between the two through - holes 1221 is Two buffer pads 123 are provided on the supporting surface 121.

[0040] The four adjacent positioning holes 111 are always located at the four corners of a square with side length a. The two through holes 1221 of the lower support member 12 correspond to the diagonal distance of a certain square. Therefore, the center distance between the through holes 1221 is Therefore, the lower support member 12 is always fixed to the bottom plate 11 along the 45° oblique direction, providing two lower support positions for the boom 2 or the dipper arm, so that the boom 2 or the dipper arm is basically laid flat. The buffer pad 123 can elastically support the downward surface of the boom 2 or the dipper arm, avoiding indentation on the surface during the welding process.

[0041] As Figure 4 shown, the side baffle 13 includes a bottom surface portion 131 and a side baffle portion 132 connected vertically. The bottom surface portion 131 is provided with a waist-shaped hole 1311 for bolt fixation with the positioning hole 111. The length of the waist-shaped hole 1311 is not less than

[0042] Each side baffle portion 132 provides a reference position for the boom 2 or the dipper arm to abut against, thereby positioning the back surface of the boom 2 or the dipper arm. The waist-shaped hole 1311 provides adjustment space for the fixing position and orientation of the side baffle 13. When the length of the waist-shaped hole 1311 is not less than the abutting surface of the side baffle portion 132 can meet the positioning requirements at any position and angle.

[0043] As Figure 5 shown, the shaft hole positioning assembly 14 includes a lower translation mechanism 141a, an upper translation mechanism 141b, a sliding table 142, a threaded seat 143, and a threaded positioning shaft 144 connected in sequence from bottom to top. The lower translation mechanism 141a drives the upper translation mechanism 141b to move relative to the bottom plate along the first direction. The upper translation mechanism 141b drives the sliding table 142 to move relative to the lower translation mechanism 141a along the second direction. The first direction and the second direction are perpendicular and both are in the horizontal plane. The adjustment interval lengths of the lower translation mechanism 141a and the upper translation mechanism 141b are not less than a. The axis of the threaded seat 143 is vertically fixed to the upper surface of the sliding table 142. The lower part of the threaded positioning shaft 144 has a threaded portion (not exposed) that is threadedly engaged with the threaded seat 143. The lower translation mechanism 141a and the upper translation mechanism 141b have the same structure, and both include a fixing plate 1411, a lead screw 1412 rotatably arranged above the fixing plate 1411, a cam 1413 for adjusting the rotation angle of the lead screw 1412, a nut sleeve 1414 threadedly engaged with the lead screw 1412, slide rails 1415 arranged in parallel on both sides of the lead screw 1412, and sliders 1416 engaged with the slide rails. The slider and the nut sleeve of the lower translation mechanism 141a are fixed to the fixing plate of the upper translation mechanism 141b. The slider and the nut sleeve of the upper translation mechanism 141b are fixed to the sliding table. A number of limit nut sleeves 145 are threadedly engaged with the threaded positioning shaft 144. The upper part of the threaded positioning shaft 144 is provided with a turning handle 146, and the turning handle 146 passes through the top of the threaded positioning shaft 144 along the radial direction.

[0044] The lower translation mechanism 141a can be selectively bolt-fixed to the positioning hole 111, so as to achieve rough positioning with a unit distance of length a. The lower translation mechanism 141a and the upper translation mechanism 141b can also perform precise positioning in two orthogonal directions. Also, because the two adjustment ranges are within the length a, it can be ensured that the axis of the threaded positioning shaft 144 can be at any position in the middle of the bottom plate 11. The three shaft hole positioning components 14 respectively complete the positioning of the head wing plate 21, the tail wing plate 22, and the back wing plate 23 using the same principle. Since the above wing plates exist in pairs, the threaded positioning shaft 144 passes through the pin holes on the two wing plates to complete the coaxiality positioning. Moreover, the wing plates are supported by the limit sleeve 145 on the threaded positioning shaft 144. After welding is completed, the threaded positioning shaft 144 is separated from the sleeve 1414 and the limit sleeve 145. The turning handle 146 can lengthen the force arm for rotating the threaded positioning shaft 144, thus making it more labor-saving to tighten and loosen the threaded positioning shaft 144.

[0045] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A universal boom arm horizontal positioning tool, characterized by: It includes a bottom plate, at least two lower supporting members, at least two side stoppers and three shaft hole positioning assemblies; The bottom plate is provided with a plurality of positioning holes arranged in an array for fixing the lower support, the side stopper or the shaft hole positioning assembly, and the hole center distance between adjacent positioning holes is a; The lower support member includes a support surface at the upper part and a pair of positioning parts at both sides of the lower part. Each positioning part is provided with a through hole for fixing with the positioning hole bolt. The center distance between the two through holes is The side stopper comprises a bottom portion and a side stopper connected vertically, and the bottom portion is provided with a waist-shaped hole for fixing with the positioning hole bolt, and the length of the waist-shaped hole is not less than The shaft hole positioning assembly includes a lower translation mechanism, an upper translation mechanism, a slide, a threaded seat and a threaded positioning shaft connected in sequence from bottom to top, the lower translation mechanism drives the upper translation mechanism to move in a first direction relative to the base plate, and the upper translation mechanism drives the slide to move in a second direction relative to the lower translation mechanism, the first direction is perpendicular to the second direction and both are located in a horizontal plane, the adjustment range length of each of the lower translation mechanism and the upper translation mechanism is not less than a, the axis of the threaded seat is vertically fixed to the upper surface of the slide, and the lower part of the threaded positioning shaft has a threaded portion that cooperates with the thread of the threaded seat.

2. The universal boom arm horizontal positioning tool according to claim 1 is characterized in that: Two buffer pads are arranged on the support surface.

3. The universal boom arm horizontal positioning tool according to claim 1, characterized in that: The lower translation mechanism has the same structure as the upper translation mechanism, and both include a fixed plate, a screw rod rotatably arranged above the fixed plate, a cam for adjusting the rotation angle of the screw rod, a screw sleeve matched with the screw thread, slide rails parallel to both sides of the screw rod, and a slider matched with the slide rails; the slider and screw sleeve of the lower translation mechanism are fixed to the fixed plate of the upper translation mechanism, and the slider and screw sleeve of the upper translation mechanism are fixed to the slide table.

4. The universal boom arm horizontal positioning tool according to claim 1, characterized in that: The threaded positioning shaft is threadedly matched with a plurality of limiting screw sleeves.

5. The universal boom arm horizontal positioning tool according to claim 1, characterized in that: A turning handle is provided on the upper portion of the threaded positioning shaft, and the turning handle passes through the top of the threaded positioning shaft in a radial direction.

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