Loader cab side door

Abstract

The utility model relates to the technical field of loading machine cabs, in particular to a loading machine cab side door which comprises two symmetrically-arranged side doors and two side door frames arranged on the peripheries of the two side doors, the rear side edges of the side doors are hinged to the rear side edges of the side door frames, and tensioning shafts are arranged in the middles of the rear portions of the rear side edges of the two side door frames. Tensioning sleeves are arranged in the middles of the rear sides of the outer side faces of the two side doors, tensioning grooves matched with the tensioning shafts are formed in the tensioning sleeves, and when the side doors are opened, the tensioning shafts are connected with the tensioning grooves in a clamped mode. The side door of the cab of the loading machine is more convenient and rapid to open and can be fixed after being completely opened, so that the collision between the side door and the loading machine caused by the conditions of wind blowing and the like after the side door is opened is reduced, the damage rate of the side door is reduced, and meanwhile, a driver can get on and off the loading machine more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of loader cabs, in particular to a side door of a loader cab. Background Art

[0002] Loaders are earthwork machines widely used in construction projects such as roads, railways, buildings, hydropower, ports, and mines. They are mainly used to shovel bulk materials such as soil, sand, lime, and coal, and can also do light shoveling of ore and hard soil. By replacing different auxiliary working devices, they can also do bulldozing, lifting, and loading and unloading of other materials such as wood.

[0003] At present, the opening structure of the side door of the loader cab mainly adopts a push-pull structure. The side doors are installed on the left and right sides of the cab. When the driver opens the side door in the cab, he usually pushes the side door to a specific position, which is inconvenient to open the door. At the same time, when the side door is opened, it is easy to close naturally when it is blown by the wind, so that the side door is easy to collide with the loader, causing damage to the side door. In addition, the driver needs to open and close the side door multiple times when getting on and off the cab multiple times, which is inconvenient for the driver to get on and off the vehicle. Summary of the invention

[0004] The utility model aims to provide a loader cab side door which can limit and fix the opened side door and is more convenient to open in view of the above problems.

[0005] To achieve the above-mentioned purpose, the utility model discloses a side door of a loader cab, which includes two side doors symmetrically arranged and two side door frames arranged around the two side doors, the rear side of the side door is hinged with the rear side of the side door frame, the rear middle of the rear side of the two side door frames is provided with a tensioning shaft, the rear middle of the outer side of the two side doors is provided with a tensioning sleeve, the tensioning sleeve is provided with a tensioning groove matched with the tensioning shaft, and when the side door is opened, the tensioning shaft is engaged with the tensioning groove. The side door of the loader cab can open the side door more conveniently, and after the side door is opened, the tensioning shaft and the tensioning sleeve can be used to fix it, which reduces the collision with the loader caused by wind blowing after the side door is opened, reduces the damage rate of the side door, and is convenient for drivers to get on and off the loader.

[0006] Preferably, a first support assembly is installed at the rear end of the upper side of the side door frame, and when the side door is fully opened, the first support assembly abuts against the rear end of the upper side of the side door. The first support assembly supports the upper side of the side door after the side door is opened, and assists the tension sleeve and the tension shaft to fix the side door to make it more stable.

[0007] Preferably, a frame is connected to the rear of the cab, and a second support assembly is arranged on the frame. When the side door is fully opened, the second support assembly abuts against the front end of the lower side of the side door. The second support assembly supports the lower side of the side door after the side door is opened, and assists the tension sleeve and the tension shaft to fix the side door to make it more stable.

[0008] Preferably, two mounting blocks extending backward are symmetrically connected in the middle of the rear sides of the two side door frames, the tensioning shaft is arranged on the mounting blocks, and a crossbeam is horizontally arranged between the two mounting blocks. The mounting blocks make the installation of the tensioning shaft more convenient.

[0009] Preferably, a cross bar for pushing and pulling the side door in the cab is installed on the inner side of the side door, so that the driver can open the side door more easily and conveniently in the cab through the cross bar.

[0010] Preferably, a first mounting plate is provided in the middle of the rear side of the side door, the tension sleeve is installed on the first mounting plate outside the side door, a second mounting plate is provided in the middle of the front side of the side door, a handle is installed in the middle of the front side of the outer side of the side door through the second mounting plate, and the front and rear ends of the cross bar are respectively connected to the second mounting plate and the first mounting plate. The first mounting plate is provided with both the tension shaft and the cross bar, and the second mounting plate is provided with both the handle and the cross bar, making installation more convenient.

[0011] Preferably, the first support assembly includes a first support seat and a first support bolt, the first support seat is vertically arranged, and the first support bolt is installed on the first support seat so as to be adjustable left and right. The first support bolt supports the side door after the side door is opened and locked, so that the locking of the side door is more stable, and the first support bolt can be adjusted to extend left and right on the first support seat, so that it is more flexible and convenient to use.

[0012] Preferably, the second support assembly includes a second support seat and a second support bolt arranged vertically, the bottom of the second support seat is mounted on the vehicle frame, and the second support bolt is mounted on the second support seat so as to be adjustable left and right. The second support bolt supports the side door after the side door is opened and locked, so that the locking of the side door is more stable, and the second support bolt can be adjusted to extend left and right on the second support seat, so that it is more flexible and convenient to use.

[0013] Preferably, the bottom of the second support seat is connected to an inwardly arranged connecting plate, and the connecting plate is provided with a long bolt notch with an inner opening, and the second support seat is installed on the frame by bolts passing through the long bolt notch so as to be adjustable left and right. The long bolt notch can further adjust the second support device, and the notch setting of the long bolt notch can directly insert the second support seat into the bolt, making installation more convenient.

[0014] To sum up, the beneficial effects of the utility model are that the side door of the loader cab is more convenient and quick to open, and can be fixed after the side door is fully opened, which reduces the collision between the side door and the loader caused by wind after the side door is opened, reduces the damage rate of the side door, and is more convenient for the driver to get on and off the loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle side door in fully opened state;

[0017] Figure 3 yes Figure 1 Enlarged view of part A;

[0018] Figure 4 yes Figure 1 Enlarged view of part B;

[0019] Figure 5 yes Figure 1 Enlarged view of part C.

[0020] In the figure, 1 is a side door; 2 is a side door frame; 3 is a vehicle frame; 4 is a tensioning sleeve; 5 is a tensioning shaft; 6 is a cross bar; 7 is a mounting block; 8 is a tensioning groove; 9 is a first support assembly; 91 is a first support seat; 92 is a first support bolt; 10 is a second support assembly; 101 is a second support seat; 102 is a second support bolt; 11 is a cross beam; 12 is a handle; 13 is a first mounting plate; 14 is a long bolt notch; 15 is a bolt; 16 is a second mounting plate; 17 is a connecting plate. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0023] See attached Figure 1 , 2 , 3, such as Figure 1 As shown, a loader cab side door comprises two symmetrically arranged side doors 1 and two side door frames 2 arranged around the two side doors 1, and the rear side edge of the side door 1 is hinged to the rear side edge of the side door frame 2, as shown in FIG. Figure 3 As shown, a tensioning shaft 5 is disposed at the rear middle of the rear side of the door frame 2 on both sides, and a tensioning sleeve 4 is disposed at the rear middle of the outer side of the door 1 on both sides. The tensioning sleeve 4 is provided with a tensioning groove 8 that matches the tensioning shaft 5. Figure 2As shown, when the side door 1 is opened, the tensioning shaft 5 is engaged with the tensioning groove 8. The two side doors 1 and the side door frames are symmetrically arranged on the left and right sides of the cab, and the two side doors 1 can be opened separately or simultaneously. The positions of the tensioning shaft 5 and the tensioning sleeve 4 correspond to each other. When the side door 1 is opened, the tensioning shaft 5 can be inserted into the tensioning sleeve 4 through the tensioning groove 8, and the tensioning sleeve 4 engages the tensioning shaft 5, so that the opened side door 1 is fixed. Figure 1 The closing of the middle side door 1 is taken as the reference, the driving direction of the loader is the front, the interior direction of the cab is the inside, and the exterior direction is the outside.

[0024] See attached Figure 1 , 2 A first support assembly 9 is installed at the rear end of the upper side of the side door frame 2. When the side door 1 is fully opened, the first support assembly 9 abuts against the rear end of the upper side of the side door 1. A frame 3 is connected to the rear of the cab. A second support assembly 10 is arranged on the frame 3. When the side door 1 is fully opened, the second support assembly 10 abuts against the front end of the lower side of the side door 1. The first support device 9, the tensioning shaft 5, the tensioning sleeve 4 and the second support device 10 are distributed in the upper, middle and lower parts on the side door 1. The tensioning shaft 5 and the tensioning sleeve 4 lock the opened side door 1. The first support device 9 and the second support device 10 abut against the side door 1 after it is opened, thereby playing a supporting role and making the side door 1 more stable.

[0025] See attached Figure 1 Two mounting blocks 7 extending backward are symmetrically connected in the middle of the rear side of the door frames 2 on both sides, the tensioning shaft 5 is arranged on the mounting blocks 7, and a crossbeam 11 is arranged horizontally between the two mounting blocks 7. The connecting block 7 is fixedly connected to the side door frame 2, and the tensioning shaft 5 is fixedly connected to the outer side of the connecting block 7. The corresponding tensioning sleeve 4 is also installed at the corresponding position of the rear side of the outer side of the side door 1, so that the side door 1 can be locked after opening.

[0026] See attached Figure 1 , 2 , a cross bar 6 for pushing and pulling the side door 1 inside the cab is installed on the inner side of the side door 1. A first mounting plate 13 is provided in the middle of the rear side of the side door 1, and the tension sleeve 4 is installed on the first mounting plate 13 on the outer side of the side door 1, that is, the tension sleeve 4 is fixed to the outer side of the side door 1 through the first mounting plate 13. A second mounting plate 16 is provided in the middle of the front side of the side door 1, and a handle 12 is installed in the middle of the outer front side of the side door 1 through the second mounting plate 16, and the front and rear ends of the cross bar 6 are respectively connected to the second mounting plate 16 and the first mounting plate 13. The inner and outer side surfaces of the first mounting plate 13 are respectively connected to one end of the cross bar 6 and the tension sleeve 4, and the inner and outer side surfaces of the second mounting plate 16 are respectively connected to the handle 12 and the other end of the cross bar 6. There is a certain space between the cross bar 6 and the inner side surface of the side door 1, which is convenient for the driver to push and pull the side door 1 in various directions in the cab.

[0027] See attached Figure 4 The first support assembly 9 includes a first support seat 91 and a first support bolt 92. The first support seat 91 is vertically arranged, and the first support bolt 92 can be adjusted left and right and installed on the first support seat 91. The first support seat 91 is fixedly connected to the rear end of the upper side of the side door frame 2, and the bolt head of the first support bolt 92 is arranged outward and a rubber protective pad is provided thereon. When the side door 1 is fully opened, the first support bolt 92 abuts against the upper end of the rear side of the side door 1. The first support bolt 92 is threadedly mounted on the first support seat 91, so the thread can be adjusted to make the length of the first support bolt 92 extending out of the first support seat 91 longer or shorter, so as to adapt to the distance after the side door 1 is opened, support the side door 1, and make it more stable.

[0028] See attached Figure 5 The second support assembly 10 includes a second support seat 101 and a second support bolt 102 which are vertically arranged. The bottom of the second support seat 101 is mounted on the vehicle frame 3, and the second support bolt 102 is mounted on the second support seat 101 so as to be adjustable left and right. The bolt head of the first support bolt 92 is arranged outward and a rubber protective pad is arranged thereon. When the side door 1 is fully opened, the second support bolt 102 abuts against the lower end of the front side of the side door 1. The second support bolt 102 is threadedly mounted on the second support seat 101, so the thread can be adjusted so that the length of the second support bolt 102 extending out of the second support seat 101 becomes longer or shorter, thereby being able to adapt to the distance after the side door 1 is opened, supporting the side door 1 and making it more stable.

[0029] See attached Figure 5 The bottom of the second support seat 101 is connected to a connecting plate 17 arranged inwardly, and a long bolt notch 14 with an inner opening is provided on the connecting plate 17. The second support seat 101 can be installed on the frame 3 by passing a bolt 15 through the long bolt notch 14 and can be adjusted left and right. The setting of the long bolt notch 14 can adjust the position of the second support assembly 10 on the frame 3, so that the length of the second support bolt 102 extending out of the second bolt hole can be further lengthened or shortened, and the position of the side door 1 can be more flexibly adapted. The notch of the long bolt notch 14 is on the inner side, so the second support assembly 10 can be directly inserted into the bolt 15 after the bolt 15 is inserted into the frame 3, and then the bolt 15 is tightened to fix the second support assembly 10, making the installation more convenient.

[0030] See attached Figure 2 , 3 ,like Figure 2 As shown, when the driver wants to open the side door 1 in the cab, the side door 1 can be pushed open more conveniently at various positions in the cab through the cross bar 6. Figure 2 , 3As shown, when the side door 1 is fully opened, the tensioning shaft 5 is clamped in the tensioning sleeve 4 through the tensioning groove 8, and the side door 1 is locked thereby. Figure 2 As shown, after the side door 1 is fully opened, the first support assembly 9 and the second support assembly 10 are against the side door 1, and the auxiliary tension sleeve 4 and the tension shaft 5 fix the side door 1, so that the side door 1 is fixed more stably, and the collision with the loader caused by wind after the side door 1 is opened is reduced, the damage rate of the side door 1 is reduced, and it is more convenient for the driver to get on and off the loader.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A loader cab side door, comprising two symmetrically arranged side doors (1) and two side door frames (2) arranged around the two side doors (1), the rear side edge of the side door (1) being hinged to the rear side edge of the side door frame (2), characterized in that: A tensioning shaft (5) is provided at the rear middle of the rear side of the door frames (2) on both sides, and a tensioning sleeve (4) is provided at the rear middle of the outer side of the door (1) on both sides. The tensioning sleeve (4) is provided with a tensioning groove (8) matched with the tensioning shaft (5). When the side door (1) is opened, the tensioning shaft (5) is engaged with the tensioning groove (8).

2. A loader cab side door according to claim 1, characterized in that: A first support assembly (9) is installed at the rear end of the upper side of the side door frame (2); when the side door (1) is fully opened, the first support assembly (9) abuts against the rear end of the upper side of the side door (1).

3. The loader cab side door according to claim 1, characterized in that: A vehicle frame (3) is connected to the rear of the cab, and a second support assembly (10) is provided on the vehicle frame (3). When the side door (1) is fully opened, the second support assembly (10) abuts against the front end of the lower side of the side door (1).

4. The loader cab side door according to claim 1, characterized in that: Two mounting blocks (7) extending backwards are symmetrically connected to the middle parts of the rear sides of the two side door frames (2), the tensioning shaft (5) is arranged on the mounting blocks (7), and a crossbeam (11) is horizontally arranged between the two mounting blocks (7).

5. The loader cab side door according to claim 4, characterized in that: A cross bar (6) for pushing and pulling the side door (1) inside the cab is installed on the inner side of the side door (1).

6. The loader cab side door according to claim 5, characterized in that: A first mounting plate (13) is provided in the middle of the rear side of the side door (1); the tension sleeve (4) is mounted on the first mounting plate (13) outside the side door (1); a second mounting plate (16) is provided in the middle of the front side of the side door (1); a handle (12) is mounted in the middle of the front side of the outer side of the side door (1) via the second mounting plate (16); and the front and rear ends of the cross bar (6) are respectively connected to the second mounting plate (16) and the first mounting plate (13).

7. The loader cab side door according to claim 2, characterized in that: The first support assembly (9) comprises a first support seat (91) and a first support bolt (92); the first support seat (91) is arranged vertically, and the first support bolt (92) is mounted on the first support seat (91) so as to be adjustable leftward and rightward.

8. The loader cab side door according to claim 3, characterized in that: The second support assembly (10) comprises a second support seat (101) arranged vertically and a second support bolt (102); the bottom of the second support seat (101) is mounted on the vehicle frame (3); and the second support bolt (102) is mounted on the second support seat (101) so as to be adjustable leftward and rightward.

9. The loader cab side door according to claim 8, characterized in that: The bottom of the second support seat (101) is connected to a connecting plate (17) arranged inwardly, and a long bolt notch (14) with an inner opening is provided on the connecting plate (17). The second support seat (101) is mounted on the vehicle frame (3) in a manner that allows bolts (15) to pass through the long bolt notch (14) and can be adjusted left and right.

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