A fixing tool for welding an engineering vehicle rear axle housing

Abstract

The utility model relates to rear axle housing fixing equipment technical field, especially a kind of fixing tool for engineering vehicle rear axle housing welding, including base, first hole pin assembly is provided on the base;The first hole pin assembly includes the core seat fixed on base, two symmetrical sliding slots are set up on the core seat, sliding block is provided in the sliding slot, the sliding block is fixed on the core seat by first hole pin bolt, to facilitate sliding block to be pressed on the first hole of housing;Anti-loosening backing plate for abutting against two sliding blocks is set between two sliding blocks, prevent two sliding blocks from sliding towards;The anti-loosening backing plate is fixed on the core seat by anti-loosening bolt.The utility model can strengthen the fixation of first hole, and play the role of preventing falling.

Description

Technical Field

[0001] This utility model relates to the technical field of rear axle housing fixing equipment, and in particular to a fixing fixture for welding rear axle housings of engineering vehicles. Background Technology

[0002] The high-horsepower rear axle housing is designed to withstand large torque and power, accommodating high-horsepower engine output and ensuring the stability and reliability of the engineering vehicle under heavy loads. The rear axle housing transmits the engine's power to the drive wheels via the gearbox, enabling the tractor's driving and operational functions. Its internal structure includes the center drive, steering mechanism, and final drive, ensuring that power is distributed to the left and right drive wheels after deceleration, torque increase, and a change in power transmission direction. It plays a central role in the overall vehicle structure and power transmission.

[0003] The rear axle housing is a crucial structural component of a vehicle, needing to withstand the weight and impact forces during vehicle operation. Therefore, welding is required during the production process to ensure the strength and stability of the rear axle, thereby ensuring the strength and stability of the entire vehicle body.

[0004] The production of medium and large steel structural components for construction machinery such as excavators and loaders faces challenges in the welding process, including: a wide variety of products in small batches; large and heavy workpieces; complex workpiece shapes with welds distributed in a three-dimensional space, requiring repeated rotation and repositioning of the workpiece during welding; large weld bead sizes requiring multiple layers and passes, resulting in high labor intensity.

[0005] The rear axle housing is welded together from multiple parts. First, the parts are spot-welded together, and then the weld seams are further welded.

[0006] like Figure 1 The rear axle housing 2 has a first hole 201, a second hole 202, and a third hole 203. The first hole 201 is located at the center of the rear axle housing 2 and has a larger inner diameter than the second hole 202 and the third hole 203. Therefore, after the rear axle housing 2 is fixed to the tooling, most of the weight is concentrated at the fixed position of the first hole 201. During the welding process, repeated rotation and flipping are required. If the fixing of the first hole 201 fails or is not secure during the rotation and flipping process, there is a risk of it falling off. Utility Model Content

[0007] The purpose of this invention is to provide a fixing fixture for welding the rear axle housing of engineering vehicles, which can strengthen the fixing of the first hole.

[0008] The technical solution of this utility model:

[0009] A fixing fixture for welding the rear axle housing of an engineering vehicle includes a base with a first hole pin assembly. The first hole pin assembly includes a core seat fixed to the base, with two symmetrical sliding grooves on the core seat. A slider is disposed in each of the sliding grooves and is fixed to the core seat by a first hole pin bolt to facilitate pressing the slider against a first hole in the housing. An anti-loosening pad is disposed between the two sliders to prevent them from sliding towards each other. The anti-loosening pad is fixed to the core seat by an anti-loosening bolt.

[0010] Furthermore, the groove is inverted T-shaped; the slider includes an inverted T-shaped slider that mates with the groove, and a first pressure plate; the inner side of the first pressure plate has a limiting opening to facilitate the anti-loosening pad to hold the slider.

[0011] Furthermore, the core seat is fixed with multiple lifting bolts in the circumferential direction.

[0012] Furthermore, the base is also provided with a tail pressing assembly; the tail pressing assembly includes multiple tail fixing plates fixed on the base, and a tail fixing seat is fixed between each pair of adjacent tail fixing plates. A tail pressure plate is provided above the tail fixing plate; the tail pressure plate is fixed to the tail fixing seat by a first tail bolt and is set on the tail fixing plate by a second tail bolt, so as to facilitate the tail pressure plate pressing against the tail of the box.

[0013] Furthermore, the base is also provided with an upper inclined side pressing assembly; the upper inclined side pressing assembly includes two upper inclined side fixing plates fixed on the base, an upper inclined side fixing seat fixed between the two upper inclined side fixing plates, an upper inclined side pressure plate provided above the upper inclined side fixing plates, the upper inclined side pressure plate being fixed to the upper inclined side fixing seat by upper inclined side bolts, so as to facilitate the upper inclined side pressure plate pressing against the upper inclined side of the box; the end of the upper inclined side pressure plate contacts the upper inclined side fixing plate through an upper inclined side shim block.

[0014] Furthermore, the base is also provided with a second hole pin assembly; the second hole pin assembly includes a second pin seat fixed on the base, a second pressure plate is provided above the second pin seat, and the second pressure plate is fixed on the second pin seat by a second hole pin bolt, so as to facilitate the second pressure plate pressing against the second hole of the housing.

[0015] Furthermore, the base is also provided with a third hole pin assembly; the third hole pin assembly includes two third pin seats fixed on the base, and a third pressure plate is provided above the third pin seats. The third pressure plate is fixed on the third pin seats by a third hole pin bolt, so as to facilitate the third pressure plate pressing against the third hole of the housing.

[0016] Furthermore, the base is also provided with a back pressing assembly; the back pressing assembly includes two back fixing plates fixed on the base, a back fixing seat fixed between the two back fixing plates, a back pressure plate provided above the back fixing plates, and the back pressure plate is fixed to the back fixing seat by back bolts to facilitate the back pressure plate pressing against the back of the box; the end of the back pressure plate contacts the back fixing plate through a back shim block.

[0017] Furthermore, the base is also provided with a side clamping assembly; the side clamping assembly includes two support seats fixed on the base, and a screw is threadedly connected to the support seats. The end of the screw is connected to a clamping block via a bearing, so that the clamping block is clamped against the side of the housing.

[0018] Furthermore, a guide rod for assisting the box body in its placement is also fixed on the base.

[0019] The beneficial effects of this utility model are:

[0020] When the rear axle housing is flipped upside down, most of the overall weight is concentrated on the first pressure plate and the first hole pin bolt, posing a risk of falling. If the first hole pin bolt breaks, the anti-loosening pad presses against the limiting opening of the first pressure plate, preventing the two sliders from sliding towards each other and losing their clamping grip on the first hole, thus preventing the housing from falling.

[0021] This invention strengthens the fixation of the first hole, preventing it from falling off. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the box.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model.

[0024] Figure 3 This is a structural diagram of the tooling.

[0025] Figure 4 This is a structural schematic diagram of the first hole pin assembly.

[0026] Figure 5 This is a schematic diagram of the limiting port structure.

[0027] Figure 6 This is a structural diagram of the tail pressing assembly and the side clamping assembly.

[0028] Figure 7 This is a structural diagram of the upper inclined side pressing component.

[0029] Figure 8 This is a structural diagram of the second and third hole pin assemblies.

[0030] Figure 9 This is a structural diagram of the back-side pressing component. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] like Figures 1-9 As shown, the present invention provides a first embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle, including a base 1, on which a first hole pin assembly 3 is provided; the first hole pin assembly 3 is used to press the first hole 201 of the housing 2.

[0033] The first hole pin assembly 3 includes a core seat 31 fixed on the base 1. The core seat 31 has two symmetrical sliding grooves 32. A slider 33 is provided in the sliding groove 32. The slider 33 is fixed on the core seat 31 by a first hole pin bolt 34 so as to facilitate the slider 33 pressing against the first hole 201 of the housing 2. An anti-loosening pad 35 is provided between the two sliders 33 to abut against the two sliders 33 and prevent the two sliders 33 from sliding towards each other. The anti-loosening pad 35 is fixed on the core seat 31 by an anti-loosening bolt 36.

[0034] The groove 32 is inverted T-shaped; the slider 33 includes an inverted T-shaped slider 33 that cooperates with the groove 32, and a first pressure plate 38; the inner side of the first pressure plate 38 has a limiting opening 37 to facilitate the anti-loosening pad 35 to abut against the slider 33.

[0035] Slide the two sliders 33 inwards, then align the first hole 201 of the housing 2 with the core seat 31. After placement, slide the two sliders 33 outwards, so that the first pressure plate 38 presses against the first hole 201. Then slide the anti-loosening pad 35 into the two limiting holes 37 and lock it onto the core seat 31 with the anti-loosening bolt 36. Finally, lock the sliders 33 onto the core seat 31 with the first hole pin bolt 34. When the first hole pin bolt 34 breaks, the anti-loosening pad 35 presses against the limiting hole 37 of the first pressure plate 38, preventing the two sliders 33 from sliding towards each other and losing their clamping pressure on the first hole 201, thus preventing the housing 2 from falling.

[0036] Based on the first embodiment, this utility model provides a second embodiment of a fixing fixture for welding the rear axle housing of engineering vehicles. The core seat 31 is fixed with a plurality of lifting bolts 39 in the circumferential direction. The core seat 31 is fixed to the base 1 by screws. When the first hole pin assembly 3 is disassembled and replaced, the lifting bolts 39 can facilitate the lifting of the first hole pin assembly 3.

[0037] Based on any of the above embodiments, this utility model provides a third embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with a tail pressing component 4, which is used to press the tail of the housing 2. The tail pressing component 4 includes a plurality of tail fixing plates 41 fixed on the base 1. A tail fixing seat 42 is fixed between adjacent tail fixing plates 41. A tail pressure plate 43 is provided above the tail fixing plate 41. The tail pressure plate 43 is fixed to the tail fixing seat 42 by a first tail bolt 44 and set on the tail fixing plate 41 by a second tail bolt 45, so as to facilitate the tail pressure plate 43 pressing on the tail of the housing 2.

[0038] The tail pressure plate 43 is placed at the tail of the box body 2. The tail pressure plate 43 is locked to the tail fixing seat 42 by the first tail bolt 44, and the tail pressure plate 43 is locked to the tail fixing plate 41 by the second tail bolt 45, so that the tail pressure plate 43 is pressed on the tail of the box body 2, which can fix the tail of the box body 2.

[0039] Based on any of the above embodiments, this utility model provides a fourth embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with an upper inclined side pressing component 5, which is used to press the upper inclined side of the housing 2. The upper inclined side pressing component 5 includes two upper inclined side fixing plates 51 fixed on the base 1, and an upper inclined side fixing seat 52 fixed between the two upper inclined side fixing plates 51. An upper inclined side pressure plate 53 is provided above the upper inclined side fixing plates 51. The upper inclined side pressure plate 53 is fixed to the upper inclined side fixing seat 52 by upper inclined side bolts 54, so as to facilitate the upper inclined side pressure plate 53 pressing on the upper inclined side of the housing 2. The end of the upper inclined side pressure plate 53 contacts the upper inclined side fixing plate 51 through an upper inclined side shim 55.

[0040] The upper inclined plate 53 is placed on the upper inclined side of the box 2, and one end of the upper inclined side shim 55 is placed on the upper inclined side fixing plate 51. The upper inclined plate 53 is locked on the upper inclined side fixing seat 52 by the upper inclined side bolt 54, so that the upper inclined plate 53 is pressed on the upper inclined side of the box 2, and the upper inclined side of the box 2 can be fixed.

[0041] Based on any of the above embodiments, this utility model provides a fifth embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with a second hole pin assembly 6, which is used to press the second hole 202 of the housing 2. The second hole pin assembly 6 includes a second pin seat 61 fixed on the base 1. A second pressure plate 62 is provided above the second pin seat 61. The second pressure plate 62 is fixed on the second pin seat 61 by a second hole pin bolt 63, so as to facilitate the second pressure plate 62 pressing on the second hole 202 of the housing 2.

[0042] Align the second hole 202 of the housing 2 with the second pin seat 61, then place the second pressure plate 62 on the second hole 202, and lock the second pressure plate 62 on the second pin seat 61 by the second hole pin bolt 63, so that the second pressure plate 62 presses against the second hole 202 of the housing 2, thereby fixing the second hole 202 of the housing 2.

[0043] Based on any of the above embodiments, this utility model provides a sixth embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with a third hole pin assembly 7, which is used to press the third hole 203 of the housing 2. The third hole pin assembly 7 includes two third pin seats 71 fixed on the base 1. A third pressure plate 72 is provided above the third pin seats 71. The third pressure plate 72 is fixed to the third pin seats 71 by a third hole pin bolt 73, so as to facilitate the third pressure plate 72 pressing the third hole 203 of the housing 2.

[0044] Align the third hole 203 of the housing 2 with the third pin seat 71, then place the third pressure plate 72 on the third hole 203, and lock the third pressure plate 72 on the third pin seat 71 by the third hole pin bolt 73, so that the third pressure plate 72 presses against the third hole 203 of the housing 2, thereby fixing the third hole 203 of the housing 2.

[0045] Based on any of the above embodiments, this utility model provides a seventh embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with a back pressing component 8, which is used to press the back of the housing 2. The back pressing component 8 includes two back fixing plates 81 fixed on the base 1, and a back fixing seat 82 fixed between the two back fixing plates 81. A back pressure plate 83 is provided above the back fixing plates 81. The back pressure plate 83 is fixed to the back fixing seat 82 by back bolts 84, so as to facilitate the back pressure plate 83 pressing on the back of the housing 2. The end of the back pressure plate 83 contacts the back fixing plate 81 through a back shim 85.

[0046] The back pressure plate 83 is placed on the back of the box 2, and one end of the back shim 85 is placed on the back fixing plate 81. The back pressure plate 83 is locked on the back fixing seat 82 by the back bolt 84, so that the back pressure plate 83 is pressed on the back of the box 2, which can fix the back of the box 2.

[0047] Based on any of the above embodiments, this utility model provides an eighth embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is further provided with a side clamping assembly 9, which is used to clamp the side of the housing 2. The side clamping assembly 9 includes two support seats 91 fixed on the base 1. A screw 92 is threaded onto each support seat 91, and the end of the screw 92 is connected to a clamping block 93 via a bearing, so that the clamping block 93 is clamped against the side of the housing 2. Rotating the screw 92 moves the clamping block 93, causing the clamping block 93 to clamp against the side of the housing 2.

[0048] Based on any of the above embodiments, this utility model provides a ninth embodiment of a fixing fixture for welding the rear axle housing of an engineering vehicle. The base 1 is also fixed with a guide rod 10 for assisting the housing 2 in its placement. The guide rod 10 serves as a support for assisting the housing 2 in its placement.

[0049] The above description is only a preferred embodiment of the present utility model and should not be construed as a limitation of this application. All equivalent changes and modifications made within the scope of the patent application of the present utility model should be included in the scope of the present utility model.

Claims

1. A fixing fixture for welding the rear axle housing of engineering vehicles, characterized in that, The device includes a base, on which a first hole pin assembly is provided. The first hole pin assembly includes a core seat fixed to the base, on which two symmetrical sliding grooves are formed. A slider is disposed in each of the sliding grooves, and the slider is fixed to the core seat by a first hole pin bolt to facilitate pressing the slider against the first hole of the housing. An anti-loosening pad is provided between the two sliders to prevent them from sliding towards each other. The anti-loosening pad is fixed to the core seat by an anti-loosening bolt. The base is also provided with a tail pressing assembly; the tail pressing assembly includes multiple tail fixing plates fixed on the base, and a tail fixing seat is fixed between two adjacent tail fixing plates. A tail pressure plate is provided above the tail fixing plate; the tail pressure plate is fixed to the tail fixing seat by a first tail bolt and is set on the tail fixing plate by a second tail bolt, so as to facilitate the tail pressure plate pressing against the tail of the box. The base is also equipped with an upper inclined side pressing assembly; the upper inclined side pressing assembly includes two upper inclined side fixing plates fixed on the base, an upper inclined side fixing seat fixed between the two upper inclined side fixing plates, an upper inclined side pressure plate above the upper inclined side fixing plates, and the upper inclined side pressure plate is fixed to the upper inclined side fixing seat by upper inclined side bolts to facilitate the upper inclined side pressure plate pressing against the upper inclined side of the box; the end of the upper inclined side pressure plate contacts the upper inclined side fixing plate through an upper inclined side shim block; The base is also provided with a second hole pin assembly; the second hole pin assembly includes a second pin seat fixed on the base, a second pressure plate is provided above the second pin seat, and the second pressure plate is fixed on the second pin seat by a second hole pin bolt, so as to facilitate the second pressure plate pressing against the second hole of the housing. The base is also provided with a third hole pin assembly; the third hole pin assembly includes two third pin seats fixed on the base, and a third pressure plate is provided above the third pin seats. The third pressure plate is fixed on the third pin seats by a third hole pin bolt, so as to facilitate the third pressure plate pressing against the third hole of the housing.

2. The fixing fixture for welding the rear axle housing of an engineering vehicle according to claim 1, characterized in that, The groove is in the shape of an inverted T; the slider includes an inverted T-shaped slider that mates with the groove, and a first pressure plate; the inner side of the first pressure plate has a limiting opening to facilitate the anti-loosening pad to hold the slider.

3. A fixing fixture for welding the rear axle housing of an engineering vehicle according to claim 1 or 2, characterized in that, The core base is fixed with multiple lifting bolts in the circumferential direction.

4. The fixing fixture for welding the rear axle housing of an engineering vehicle according to claim 1, characterized in that, The base is also provided with a back pressing assembly; the back pressing assembly includes two back fixing plates fixed on the base, a back fixing seat fixed between the two back fixing plates, a back pressure plate provided above the back fixing plates, and the back pressure plate is fixed to the back fixing seat by back bolts to facilitate the back pressure plate pressing against the back of the box; the end of the back pressure plate contacts the back fixing plate through a back shim block.

5. A fixing fixture for welding the rear axle housing of an engineering vehicle according to claim 1, characterized in that, The base is also provided with a side clamping assembly; the side clamping assembly includes two support seats fixed on the base, and a screw is threadedly connected to the support seat. The end of the screw is connected to a clamping block via a bearing, so that the clamping block is clamped against the side of the box.

6. A fixing fixture for welding the rear axle housing of an engineering vehicle according to claim 1, characterized in that, The base is also fixed with a guide rod to assist in the placement of the box.

Images