A loader rear guard and a loader

Abstract

The utility model relates to the field of loader safety equipment discloses a loader rear protection device and loader, including the fixed component for fixed installation on the loader counterweight, and the protection component is installed on the fixed component around vertical axis rotation, still include the locking component for fixed installation on the rear end of loader counterweight, to when the protection component rotates to the locking component and locks it fixed, protects in rear machine cover rear side, the utility model discloses the opening and closing of locking component, the rotary connection of fixed component, realize the protection of loader rear protection device, open, three different working conditions of dismounting, compared with prior art loader rear protection device simple structure, dismounting is convenient, in the protection loader rear area is exempted from wearing and colliding while, satisfy the turning of rear machine cover or the opening of machine cover rear tail door.

Description

Technical Field

[0001] This utility model relates to the field of loader safety equipment, and in particular to a loader rear protection device and a loader. Background Technology

[0002] Loaders are earthmoving machines widely used in construction projects such as highways, railways, buildings, hydropower, ports, and mines. Rear guards are protective devices installed at the rear of the loader to ensure that the rear area is protected from collisions and wear under harsh and complex working conditions, thus extending its service life.

[0003] Currently, most loader rear protective devices are fixed structures, mainly welded from round tubes and steel plates, and bolted to the loader's counterweight. For example, a loader protective device disclosed in Chinese Utility Model Patent No. CN205875257U has its base bolted to the upper plate of the loader's counterweight. When the loader's rear hood needs to be flipped or the hood door needs to be opened, the protective device needs to be removed to make room. However, this rear protective device has many bolts fixing it to the loader's counterweight, and these bolts are easily lost when removing the rear protective device in confined spaces and harsh environments, making the rear protective device generally difficult to disassemble. Under these conditions, it is inconvenient to flip the rear hood or open the rear door of the hood at any time. Utility Model Content

[0004] This utility model provides a rear protective device for a loader to solve the problem that a fixed rear protective device is inconvenient to disassemble, resulting in difficulty in flipping the rear hood or opening the hood door. The purpose of this utility model is also to provide a loader that solves the problem of inconvenient rear hood flipping or hood door opening in loaders with traditional fixed rear protective devices.

[0005] To achieve the above objectives, this utility model provides a technical solution for a loader rear protection device:

[0006] A loader rear protection device includes a fixing component for fixedly mounting on the loader counterweight, and a protection component rotatably mounted on the fixing component about a vertical axis. It also includes a locking component for fixedly mounting on the rear end of the loader counterweight to lock and fix the protection component when it rotates to the locking component, thus protecting the rear side of the loader hood.

[0007] Furthermore, the protective component includes a U-shaped protective frame, which is a bent pipe frame, and the fixing component includes a fixing seat and a rotating pin. The bent pipe frame is fitted onto the rotating pin through the inner hole at one end to achieve rotatable installation between it and the fixing seat.

[0008] Furthermore, a lubricating sleeve is installed between the rotating pin and the inner hole of the bent pipe frame.

[0009] Furthermore, the rotating pin is made of round steel, the fixed seat is made of steel plate, the rotating pin is welded to the fixed seat, and the fixed seat is fixedly installed on the upper plate of the loader counterweight.

[0010] Furthermore, a reinforcing tube for improving structural strength is welded to the middle of the bent pipe frame.

[0011] Furthermore, the locking component includes a locking seat with a locking pin hole, and the protective component has a through pin hole. The locking component also includes a locking pin that passes through the locking pin hole and the through pin hole in sequence when the protective component is locked, and a locking pin for fixing the locking pin.

[0012] Furthermore, the locking seat has a U-shaped groove structure, the space inside the U-shaped groove is used for the entry of the protective component, and the locking pin hole is set on the two side walls of the U-shaped groove.

[0013] Furthermore, a positioning support block for supporting the protective component is fixedly installed inside the locking seat so that the locking pin hole and the through pin hole are coaxially aligned when the protective component contacts the positioning support block.

[0014] Furthermore, the locking seat is fixedly installed at the rear end of the loader's counterweight.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention provides a pioneering rear protective device for loaders. One end of the protective component is locked by a locking component, while the other end is rotatably connected around a fixed component. When the rear protective device needs to be opened, the locking component opens, and the protective component rotates around the fixed component to a certain position, creating space for the rear hood to flip over or the hood door to open. Compared with existing loader rear protective devices, this invention effectively protects the rear area of ​​the loader from collision and wear, while allowing for easy rotation to create space for opening a rear-flip hood or the hood's rear tailgate.

[0017] To achieve the above objectives, this utility model provides the following technical solution for a loader:

[0018] A loader includes a vehicle body and a rear protective device installed at the rear end of the vehicle body. The rear protective device is symmetrically arranged on the left and right sides. The loader rear protective device includes a fixing component for fixing on the loader counterweight, and a protective component for rotating on the fixing component about a vertical axis. It also includes a locking component for fixing on the rear end of the loader counterweight so as to lock the protective component when it rotates to the locking component. The device is located behind the rear hood. The fixing components of the left and right rear protective devices are respectively located on the left and right sides of the vehicle body.

[0019] Furthermore, the protective component includes a U-shaped protective frame, which is a bent pipe frame, and the fixing component includes a fixing seat and a rotating pin. The bent pipe frame is fitted onto the rotating pin through the inner hole at one end to achieve rotatable installation between it and the fixing seat.

[0020] Furthermore, a lubricating sleeve is installed between the rotating pin and the inner hole of the bent pipe frame.

[0021] Furthermore, the rotating pin is made of round steel, the fixed seat is made of steel plate, the rotating pin is welded to the fixed seat, and the fixed seat is fixedly installed on the upper plate of the loader counterweight.

[0022] Furthermore, a reinforcing tube for improving structural strength is welded to the middle of the bent pipe frame.

[0023] Furthermore, the locking component includes a locking seat with a locking pin hole, and the protective component has a through pin hole. The locking component also includes a locking pin that passes through the locking pin hole and the through pin hole in sequence when the protective component is locked, and a locking pin for fixing the locking pin.

[0024] Furthermore, the locking seat has a U-shaped groove structure, the space inside the U-shaped groove is used for the entry of the protective component, and the locking pin hole is set on the two side walls of the U-shaped groove.

[0025] Furthermore, a positioning support block for supporting the protective component is fixedly installed inside the locking seat so that the locking pin hole and the through pin hole are coaxially aligned when the protective component contacts the positioning support block.

[0026] Furthermore, the locking seat is fixedly installed at the rear end of the loader's counterweight.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] This utility model provides an improved loader with symmetrically arranged rear protective devices at the rear end of the loader body. Left and right fixing components are respectively located on the left and right sides of the vehicle body. In the rear protective device, one end of the protective component is locked by a locking component, and the other end is rotatably connected around the fixing component. When the rear protective device needs to be opened, the locking component opens, and the protective component rotates around the fixing component to a certain position, creating space for the rear hood to flip or the hood door to open. Compared with existing loaders, this utility model effectively protects the rear end of the vehicle body while allowing the rear protective device to rotate, accommodating the flipping of the rear hood or the opening of the hood door. The rear protective device has a simple structure and is easy to maintain. Attached Figure Description

[0029] Figure 1 For: Schematic diagram of the overall assembly of the rear protective device for the loader;

[0030] Figure 2For example: Connection diagram of the rear protective device of the loader;

[0031] Figure 3 For: Schematic diagram of the loader's rear protective device in the open state.

[0032] In the diagram: 1. Left rear guard; 2. Locking pin; 3. Engine cover; 4. Locking seat; 5. Clamping pin; 6. Right rear guard; 7. Rotary pin; 8. Loader counterweight; 9. Lubricating bearing; 10. Through pin hole; 11. Locking pin hole; 12. Positioning support block. Detailed Implementation

[0033] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0034] The present invention provides a rear protective device for a loader. One end of the rear protective device is set on the counterweight of the loader, and the other end can rotate around an axis. While protecting the rear area of ​​the loader from collision and wear, the rear protective device can be disassembled and rotated, leaving enough space to allow the rear hood to be flipped or the tailgate of the hood to be opened.

[0035] Based on the main concepts above, the following are different implementation examples for illustration.

[0036] The loader rear protection device of this utility model can be used individually and installed at the rear of the loader, or it can be used in pairs and installed symmetrically on the left and right sides at the rear of the loader.

[0037] A more basic embodiment of a loader rear guard device, such as Figures 1 to 3 As shown, it includes a fixed component, a protective component, and a locking component. The fixed component is fixedly installed on the loader counterweight 8. The protective component is rotatably installed on the fixed component around a vertical axis. The locking component is fixedly installed at the rear end of the loader counterweight 8. When the protective component rotates to the locking component, it is locked in place, thereby locking the entire rear protective device. Figure 1 As shown, the left rear guard 1 and the right rear guard 6, which are paired rear guard devices, are symmetrically arranged on the loader's counterweight and are completely identical. In the following text, they will only be referred to as rear guards.

[0038] Based on the above embodiments, in one embodiment, approximately... Figures 2 to 3As shown, the protective component includes a U-shaped protective frame, i.e., a U-shaped outer frame for rear protection. The protective frame is formed by bending a round tube with the U-shaped opening facing downwards, and has a simple structure. The fixing component includes a fixing seat and a rotating pin 7. The U-shaped bent tube frame is fitted onto the rotating pin 7 through the inner hole at one end, thereby achieving rotatable installation with the fixing seat. In another embodiment, the fixing component includes a fixing seat and a rotating sleeve installed on the fixing seat. The protective component includes two columns, left and right, and a connecting beam connecting the left and right columns. The column on one side is rotatably inserted into the rotating sleeve, thereby achieving rotatable installation with the fixing seat.

[0039] When the rear protection adopts a U-shaped outer frame structure formed by bending a round tube, the wall of the rear protection tube is generally thin. Vibration during loader operation causes stress concentration when it rotates around the rotating pin 7, leading to damage to the inner hole of the rear protection bent tube frame and the rotating pin 7. To solve this problem, based on the above embodiment, an embodiment is proposed, such as... Figure 2 As shown, a lubricating sleeve is installed between the rotating pin 7 and the inner hole of the bent pipe frame. This lubricating sleeve is a lubricating bearing 9, which is used to protect the bent pipe from rotating around the shaft and improve its service life.

[0040] The rotating pin 7 is fixedly connected to the fixed base. Based on the above embodiments, in one embodiment, such as... Figure 2 As shown, the rotating pin 7 is a round steel bar, and the fixed seat is a steel plate. The rotating pin 7 is welded to the fixed seat, and the fixed seat is fixedly installed on the upper plate of the loader counterweight 8. In another embodiment, the fixed seat can also be installed at the rear end of the counterweight.

[0041] When the protective component is a U-shaped frame structure, in order to improve its structural strength, based on the above embodiments, in one embodiment, such as... Figure 2 As shown, a reinforcing tube is welded to the middle of the rear protection to enhance the strength of the protective structure and improve the impact resistance of the rear protection. In other embodiments, two or three reinforcing tubes can be added inside the U-shaped protective frame of the rear protection to further enhance the structural strength.

[0042] Based on the above embodiments, in one embodiment, such as Figure 2As shown, the locking component includes a locking seat 4, a locking pin 2, and a locking pin 5. The locking seat 4 has a locking pin hole 11, and the rear guard has a through pin hole 10. When the loader's rear guard is in the locked state, the locking pin 2 passes through the locking pin hole 11 and the through pin hole 10 in sequence, and the locking pin 5 is inserted at the end of the locking pin 2 on the outside of the locking seat 4 to prevent the locking pin 2 from accidentally coming out. At this time, one end of the rear guard is locked in the locking seat, and the rear guard covers the rear side of the rear hood, thus playing a protective role. In other embodiments, the locking component includes a locking seat, a locking pin, and a locking pin. The locking seat has a locking groove, and locking pin holes are symmetrically arranged on both sides of the groove wall. The rear guard does not need a through-hole. When one end of the rear guard is rotated into the locking groove, the locking pin passes through the locking pin hole on the locking seat and is fastened with a locking pin. The rear guard is blocked in the locking groove in the horizontal direction by the locking pin. Under the combined action of the locking pin and the locking groove, the rear guard is locked in the locking seat.

[0043] The locking seat 4 described above can have various structural forms. Based on the above embodiments, in one embodiment, such as... Figure 2 As shown, the locking seat 4 is a U-shaped groove welded from steel plates. One end of the protective component, i.e., the rear guard, passes through the U-shaped groove and is then locked. In other embodiments, the locking seat 4 is an L-shaped plate with a locking hole. The bottom end of the L-shaped plate is fixedly connected to the loader counterweight 8. A locking pin passes sequentially through the pin hole of the rear guard and the locking hole on the L-shaped plate. The head of the locking pin blocks the pin hole, and a locking pin is fitted onto the locking pin on the outside of the L-shaped plate, thus locking the rear guard. In another embodiment, the locking seat is a clamp that rotates around a vertical axis and is installed at the rear end of the loader counterweight. When the rear guard rotates to a position that shields the rear hood, the clamp rotates to hold the rear guard inside and connects its other end to the rear end screw of the loader counterweight, thus locking the rear guard inside the clamp.

[0044] If the rear guard is only fixedly connected by the through-hole 10, locking pin hole 11, and locking pin 2, the rear guard will vibrate within the locking seat 4 due to the movement of the loader itself, causing collision and wear between the through-hole 10, locking pin hole 11, and locking pin 2, affecting the service life of the components. To solve this problem, based on the above embodiments, in one embodiment, such as... Figure 2 As shown, a positioning support block 12 is welded inside the locking seat 4. The positioning support block 12 is a curved block arranged symmetrically on the top and bottom. When the rear protection rotates into the locking seat, the curved surface fits with the outer circumference of the rear protection bend, which plays a positioning support role for the rear protection, making it easy to align the locking pin hole 11 with the through pin hole 10, and at the same time reducing the shaking of the rear protection.

[0045] Based on the above embodiments, in one embodiment, the locking seat 4 is fixedly installed at the rear end of the loader counterweight 8. In another embodiment, the locking seat 4 is installed on the left and right outer sides of the loader counterweight 8, the fixing seat of the fixing component is installed at the rear end of the loader counterweight, the shorter end of the rear guard passes through the locking seat 4 and is locked, and the longer end is rotatably connected to the fixing seat of the fixing component.

[0046] When the loader's rear guard is in the protected state, one end of the rear guard is locked to the locking seat 4 through the through pin hole 10, and the other end cannot rotate around the rotating pin 7, thus protecting the rear area of ​​the loader; when the loader hood needs to be flipped or the hood door needs to be opened, such as Figures 2 to 3 As shown, the rear guard can rotate around the rotating pin 7 and rotate out from the locking seat 4 to the open state, at which time the rear hood can be flipped and the hood door opened; when the loader's rear guard needs to be removed, the other end of the rear guard can be directly removed from the rotating pin, at which point the rear guard is completely detached from the loader's counterweight 8. Its structure is simple, ensuring structural strength while allowing the driver to maintain a good view of the loader's rear while working. The profile facilitates later maintenance and repair, saving costs.

[0047] An embodiment of the loader of this utility model: The loader includes a body and a loader rear protection device installed at the rear end of the loader. The specific structure of the loader rear protection device can be the same as the structure of the embodiment of the loader rear protection device described above.

[0048] In one embodiment, the loader rear guard device has a large width dimension, its fixing component is installed on one side of the loader counterweight in the left-right direction, and its locking component is installed on the other side of the rear end of the loader counterweight, so that the loader can be protected by a loader rear guard device.

[0049] In another embodiment, as Figure 1-3 As shown, the width of the loader's rear protective device is relatively small. There are two rear protective devices, which are arranged symmetrically on the left and right sides in a "double-door" configuration. The fixing components of the two rear protective devices are respectively installed on both sides of the loader's counterweight in the left and right directions. The locking component is installed at the rear end of the loader's counterweight near the middle.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A rear protective device for a loader, characterized in that: It includes a fixing component for fixedly mounting on the loader counterweight, and a protective component for rotating about a vertical axis and mounted on the fixing component, and also includes a locking component for fixedly mounting on the rear end of the loader counterweight to lock and fix the protective component when it rotates to the locking component, thus protecting the rear side of the rear hood.

2. The rear protective device for a loader according to claim 1, characterized in that: The protective component includes a U-shaped protective frame, which is a bent pipe frame. The fixing component includes a fixing seat and a rotating pin. The bent pipe frame is fitted onto the rotating pin through the inner hole at one end to achieve rotatable installation with the fixing seat.

3. A loader rear protection device according to claim 2, characterized in that: A lubricating sleeve is installed between the rotating pin and the inner hole of the bent pipe frame.

4. A loader rear protection device according to claim 2, characterized in that: The rotating pin is made of round steel, the fixed seat is made of steel plate, the rotating pin is welded to the fixed seat, and the fixed seat is fixedly installed on the upper plate of the loader counterweight.

5. A loader rear protection device according to claim 2, characterized in that: The upper part of the bent pipe frame is welded with a reinforcing pipe to improve the structural strength.

6. The loader rear protective device according to any one of claims 1-5, characterized in that: The locking component includes a locking seat with a locking pin hole, and a through pin hole on the protective component. The locking component also includes a locking pin that passes through the locking pin hole and the through pin hole in sequence when the protective component is locked, and a locking pin for fixing the locking pin.

7. A loader rear protection device according to claim 6, characterized in that: The locking seat has a U-shaped groove structure. The space inside the U-shaped groove is used for the entry of protective components, and the locking pin holes are set on the two side walls of the U-shaped groove.

8. A loader rear protection device according to claim 7, characterized in that: The locking seat has a fixedly installed positioning support block for supporting the protective component, so that the locking pin hole and the through pin hole are coaxially aligned when the protective component contacts the positioning support block.

9. A loader rear protection device according to claim 6, characterized in that: The locking seat is fixedly installed at the rear end of the loader's counterweight.

10. A loader, comprising a chassis and a rear protective device mounted at the rear end of the chassis, characterized in that: The rear protective devices are arranged symmetrically on the left and right sides, and are the loader rear protective devices as described in any one of claims 1-9, with the fixing components of the left and right rear protective devices located on the left and right sides of the vehicle body respectively.

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