Auxiliary device for positioning and overturning lower vehicle frame

Abstract

The utility model discloses a lower vehicle frame positioning and overturning auxiliary device which comprises a chassis, a reinforcing cross beam is arranged at the bottom of the chassis, a supporting frame is arranged in the middle of the upper end face of the chassis, a supporting plate is arranged at the upper end of the supporting frame, and two symmetrically-distributed step positioning blocks are arranged in the middles of the two ends of the supporting plate respectively. Two symmetrically-distributed sliding rails are arranged on the upper end face of the base plate, two clamping mechanisms are symmetrically arranged above the two sliding rails, the two ends of each clamping mechanism are slidably connected with the two sliding rails through two sliding blocks respectively, a threaded sleeve is connected to the middle of the lower end face of each clamping mechanism through a connecting piece, and a reversing transmission is arranged on the upper end face of the base plate. The input end of the reversing transmission is connected with a driving motor, a bidirectional lead screw is arranged on the inner side of the output end of the reversing transmission, the two ends of the bidirectional lead screw are in threaded connection with the two threaded sleeves respectively, and the functions of assisting in rapid positioning and assembling, improving the machining efficiency, improving the overall lifting and overturning angle and being high in safety coefficient are achieved.

Description

TECHNICAL FIELD

[0001] The utility model application relates to excavator processing technical field, specifically is a kind of lower frame positioning overturning auxiliary device. BACKGROUND

[0002] Excavator, also known as excavating machinery, also known as excavator, is a kind of earth-moving machinery that uses shovel to excavate materials higher or lower than the support surface and loads into transport vehicles or unloads into stockpile site, the accessories of excavator are numerous, wherein the lower frame is used for the component directly assembled with track wheel, supporting wheel and guide wheel, the lower frame is welded by various components, and the commonly used welding method in the prior art is manual welding, when welding operation is carried out, the track box and platform are aligned and fixed by means of spot welding with the assistance of travelling crane, in this process, the time consumed for assembly, workpiece positioning is more, and the operation is complicated, which affects the processing efficiency of the whole welding process, in the process of welding, in order to facilitate the welding of weld, the travelling crane is often needed to lift one side of the lower frame to adjust or overturn the angle, and this operation process has great safety hazard, because the complete welding operation has not been completed, so there is a possibility that the welding points and welds of the lower frame are broken and fall off on one side of the lifted lower frame.

[0003] Therefore, the present application aims to design a device that can assist in rapid positioning and assembly, improve processing efficiency, lift and overturn the angle as a whole, and has high safety factor. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a lower frame positioning overturning auxiliary device, which can realize the functions of assisting in rapid positioning and assembly, improving processing efficiency, lifting and overturning the angle as a whole, and having high safety factor.

[0005] The utility model discloses the technical scheme adopted by the device is as follows: a lower frame positioning overturning auxiliary device includes a chassis, a reinforcing cross beam is arranged at the bottom of the chassis, a support frame is arranged at the upper end surface of the chassis, a support plate is arranged at the upper end of the support frame, two symmetrical ladder positioning blocks are arranged at the both ends of the support plate, two symmetrical slide rails are arranged at the upper end surface of the chassis, two clamping mechanisms are symmetrically arranged above the two slide rails, the both ends of the clamping mechanism are slidably connected with the two slide rails through two sliding blocks, a threaded sleeve is connected with the middle part of the lower end surface of the clamping mechanism through a connecting piece, a reversing gear is arranged at the upper end surface of the chassis, a driving motor is connected with the input end of the reversing gear, a bidirectional screw rod is arranged at the inner side of the output end of the reversing gear, and the both ends of the bidirectional screw rod are threadedly connected with the two threaded sleeves.

[0006] Further, the clamping mechanism comprises a shell, a first limit paw is arranged at the left end of the shell, a sliding sleeve is arranged at the inner side of the right end of the shell, a second limit paw is slidably arranged at the inner side of the sliding sleeve, two symmetrical connecting plates are connected to the side end face of the shell, a vertical plate is connected to the end of the connecting plate, an adjusting bolt is threadedly connected to the inner side of the vertical plate, a hydraulic cylinder is arranged at the left end of the shell, and the output end of the hydraulic cylinder is connected with the second limit paw through a connecting rod and a locking nut.

[0007] Further, the first limit paw comprises a first end plate, a first positioning plate is connected to the upper end of the first end plate, and an inclined guide surface is arranged at the end of the first positioning plate.

[0008] Further, the second limit paw comprises a second end plate, a second positioning plate is connected to the upper end of the second end plate, an inclined guide surface is arranged at the end of the second positioning plate, a rectangular sleeve is connected to the side face of the second end plate, and the rectangular sleeve is slidably matched with the sliding sleeve.

[0009] Further, the left and right ends of the bidirectional screw rod are opposite in screw direction.

[0010] Further, the two threaded sleeves threadedly connected with the bidirectional screw rod are opposite in screw direction.

[0011] Further, the slide rail and the bidirectional screw rod pass through the support frame and are not in contact with the support frame.

[0012] Further, an external thread is arranged at the outer side of the upper end of the stepped positioning block.

[0013] The device has the following beneficial effects:

[0014] 1. The clamping mechanism which can be moved and adjusted is used for positioning and fixing the track boxes on both sides, the stepped positioning block at the middle part is used for quickly positioning the platform, so that the positioning and assembling of the two are quickly realized, the difficulty of positioning and assembling is reduced, the efficiency is improved, the platform and the track boxes are fixed together by the whole device, the support and fixation are realized by various structures during overturning, the separation and falling are avoided, the auxiliary quick positioning and assembling are realized, the machining efficiency is improved, the whole lifting and overturning angle is realized, and the safety coefficient is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the structural view of the utility model.

[0016] Fig. 2 is the structural view of the clamping mechanism of the utility model.

[0017] Fig. 3 is the structural view of the chassis of the utility model.

[0018] Fig. 4It is the excavator lower frame structure view of the utility model.

[0019] Mark 1 - chassis; 2 - reinforcing cross beam; 3 - reinforcing structure; 4 - lifting eye; 5 - slide rail; 6 - slide block; 7 - clamping mechanism; 8 - threaded sleeve; 9 - bidirectional screw; 10 - connecting plate; 11 - vertical plate; 12 - adjusting bolt; 13 - hydraulic cylinder; 14 - driving motor; 15 - reversing transmission; 16 - support frame; 17 - support plate; 18 - stepped positioning block; 19 - housing; 20 - first limit claw; 21 - second limit claw; 22 - slide sleeve; 23 - connecting rod; 24 - locking nut; 25 - track box; 26 - platform; 27 - target hole; 28 - target groove. DETAILED DESCRIPTION

[0020] The device of the utility model will be further described in combination with specific embodiments, and these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0021] Embodiment one: see Figs. 1 to 4 It is the structure view, clamping mechanism 7 structure view, chassis 1 structure view, excavator lower frame structure view of the utility model, a lower frame positioning and overturning auxiliary device, it includes chassis 1, the bottom of chassis 1 is provided with reinforcing cross beam 2, the upper end surface of chassis 1 is provided with support frame 16, the upper end of support frame 16 is provided with support plate 17, the both ends of support plate 17 are provided with two symmetrical distribution stepped positioning blocks 18, the upper end outside of stepped positioning block 18 is provided with external thread, the function of stepped positioning block 18 is to be positioned and fixed with the target hole 27 arranged at the platform 26 of excavator lower frame, the target hole 27 is stepped hole, after the insertion of stepped positioning block 18 into the inside of target hole 27, the top passes through target hole 27 and is locked and fixed by nut, so that platform 26 is fixed on support plate 17.

[0022] The upper end surface of the chassis 1 is provided with two symmetrical slide rails 5, two clamping mechanisms 7 are symmetrically arranged above the two slide rails 5, the two ends of the clamping mechanism 7 are respectively connected with the two slide rails 5 through two sliding blocks 6, the lower end surface of the clamping mechanism 7 is connected with a threaded sleeve 8 through a connecting piece, the upper end surface of the chassis 1 is provided with a reversing gear 15, the input end of the reversing gear 15 is connected with a driving motor 14, the output end of the reversing gear 15 is provided with a bidirectional screw rod 9 on the inner side, the two ends of the bidirectional screw rod 9 are respectively connected with the two threaded sleeves 8, the left and right ends of the bidirectional screw rod 9 are opposite in screw direction, the two threaded sleeves 8 connected with the bidirectional screw rod 9 are opposite in screw direction, the slide rails 5 and the bidirectional screw rod 9 pass through the support frame 16 and do not contact the support frame 16, the driving motor 14 can adjust the two clamping mechanisms 7 to move close to or away from each other when rotating, the reversing gear 15 includes a shell, two conical gears with 90° axis intersection are arranged in the inner side of the shell through a support structure, which are divided into driving conical gears and driven conical gears, the driving conical gears are fixedly connected with the output end of the driving motor 14, and the driven conical gears pass through the bidirectional screw rod 9 on the inner side, the middle part of the bidirectional screw rod 9 is without a threaded structure, and the bidirectional screw rod 9 is fixedly connected with the driven conical gears, so that the reversing operation is completed, the track box 25 is positioned and clamped through the clamping mechanism 7, the bidirectional screw rod 9 rotates when the driving motor 14 rotates, and the two symmetrical and parallel clamping mechanisms 7 are driven to move close to or away from each other, so as to control and adjust the position of the two track boxes 25.

[0023] The clamping mechanism 7 comprises a shell 19, the left end of the shell 19 is provided with a first limiting claw 20, the inner side of the right end of the shell 19 is provided with a sliding sleeve 22, the inner side of the sliding sleeve 22 is slidably provided with a second limiting claw 21, the left end of the shell 19 is provided with a hydraulic cylinder 13, the output end of the hydraulic cylinder 13 is connected with the second limiting claw 21 through a connecting rod 23 and a locking nut 24, the side end face of the shell 19 is connected with two symmetrical connecting plates 10, the end of the connecting plate 10 is connected with a vertical plate 11, the inner side of the vertical plate 11 is threadedly connected with an adjusting bolt 12, the first limiting claw 20 comprises a first end plate, the upper end of the first end plate is connected with a first positioning plate, the end of the first positioning plate is provided with an inclined guide surface, the second limiting claw 21 comprises a second end plate, the upper end of the second end plate is connected with a second positioning plate, the end of the second positioning plate is provided with an inclined guide surface, the side face of the second end plate is connected with a rectangular sleeve, the rectangular sleeve is slidably matched with the sliding sleeve 22, through the action of the hydraulic cylinder 13, the spacing between the second limiting claw 21 and the first limiting claw 20 changes, during operation, the track box 25 is first hoisted, the target slot 28 symmetrically arranged at the bottom of the track box 25 is inserted according to the positions of the first limiting claw 20 and the second limiting claw 21, after the track box 25 is completely lowered and placed, the hydraulic cylinder 13 is started to contract, the second limiting claw 21 is pulled to move and abut against the bottom plate of the track box 25 to drive the track box 25 to move to the direction of the first limiting claw 20, meanwhile, the track box 25 is quickly positioned through the simultaneous action of the first positioning plate, the first end plate, the second positioning plate and the second end plate, the adjusting bolt 12 is used to set the length of the extension in advance, so that the position of the track box 25 is quickly positioned.

[0024] The upper end face of the chassis 1 is provided with the reinforcing structure 3 on both sides, the end of the reinforcing structure 3 is provided with the symmetrical lifting rings 4, when welding operation is performed and the angle of turning over is needed, the lifting belt is connected with the lifting ring 4, hoisting is performed through the travelling crane, all the structures on the chassis 1 can be turned over together, in this process, the platform 26 and the track box 25 not only have a certain connection relationship through partial welding, but also are fixed together with the chassis 1 through the stepped positioning block 18, the nut and the clamping mechanism 7, which is safe and convenient.

[0025] The clamping mechanism 7 can position and fix the track boxes 25 on both sides, the stepped positioning block 18 at the middle part quickly positions the platform 26, so that the positioning and matching of the two are quickly realized, the difficulty of positioning and matching is reduced, the efficiency is improved, the whole device fixes the platform 26 and the track box 25 together, the structures are used to support and fix during turning over, the separation and falling off do not occur, the auxiliary quick positioning and matching are realized, the machining efficiency is improved, the whole hoisting and turning over angle is realized, and the safety coefficient is high.

Claims

1. A lower frame positioning and roll-over assist device, characterized by: The utility model provides a kind of double-sided clamping device, including chassis (1), the bottom of the chassis (1) is provided with reinforcing crossbeam (2), the upper end surface middle part of the chassis (1) is provided with support frame (16), the upper end of the support frame (16) is provided with support plate (17), the middle part of the both ends of the support plate (17) is provided with two symmetrical distribution step positioning blocks (18), the upper end surface of the chassis (1) is provided with two symmetrical distribution slide rails (5), two the slide rails (5) upper symmetry is provided with two clamping mechanisms (7), the both ends of the clamping mechanism (7) are slidably connected with two slide rails (5) respectively by two sliding blocks (6), the lower end surface middle part of the clamping mechanism (7) is connected with threaded sleeve (8) by connecting piece, the upper end surface of the chassis (1) is provided with reversing gear (15), the input of the reversing gear (15) is connected with driving motor (14), the inside of the output of the reversing gear (15) is provided with bidirectional screw rod (9), the both ends of the bidirectional screw rod (9) are threadedly connected with two threaded sleeves (8) respectively.

2. A lower frame positioning and roll-over assist device according to claim 1 wherein: The clamping mechanism (7) includes a housing (19), a first limit pawl (20) is provided at the left end of the housing (19), a sliding sleeve (22) is provided inside the right end of the housing (19), a second limit pawl (21) is slidably provided inside the sliding sleeve (22), two symmetrically distributed connecting plates (10) are connected to the side end surface of the housing (19), a vertical plate (11) is connected to the end of the connecting plate (10), an adjusting bolt (12) is threadedly connected to the inside of the vertical plate (11), a hydraulic cylinder (13) is provided at the left end of the housing (19), the output of the hydraulic cylinder (13) is connected to the second limit pawl (21) through a connecting rod (23) and a locking nut (24).

3. A lower frame positioning and roll-over assist device according to claim 2, wherein: The first limit pawl (20) includes a first end plate, a first positioning plate is connected to the upper end of the first end plate, and an inclined guide surface is provided at the end of the first positioning plate.

4. A lower frame positioning and roll-over assist device according to claim 2, wherein: The second limit pawl (21) includes a second end plate, a second positioning plate is connected to the upper end of the second end plate, an inclined guide surface is provided at the end of the second positioning plate, and a rectangular sleeve is connected to the side surface of the second end plate, which is slidably matched with the sliding sleeve (22).

5. A lower frame positioning and roll-over assist device as claimed in claim 1, wherein: The left and right ends of the bidirectional screw rod (9) have opposite screw directions.

6. A lower frame positioning roll-over assist device according to claim 5, wherein: The two threaded sleeves (8) threadedly connected with the bidirectional screw rod (9) have opposite screw directions.

7. A lower frame positioning and roll-over assist device as claimed in claim 1, wherein: The slide rails (5) and the bidirectional screw rod (9) pass through the support frame (16) without contacting the support frame (16).

8. A lower frame positioning and roll-over assist device according to claim 1 wherein: An external thread is provided at the outside of the upper end of the step positioning block (18).

Images