Safety protection device for installation of half shaft of bulldozer

Abstract

The safety protection device for bulldozer half shaft installation comprises a base, a motor is fixedly installed on the surface of the base, a lead screw is fixedly connected to the output end of the top of the motor, and the top end of the lead screw is rotationally connected with the inner side of the upper end of a fixing frame in a limiting mode; guide rods are fixedly installed between the fixing frame and the surface of one end of the base, the guide rods are symmetrically distributed and installed on the two sides of the lead screw, the surface of the lead screw is sleeved with a connecting plate in a threaded mode, the surfaces of the guide rods are slidably sleeved with the two ends of the connecting plate, and a base is fixedly installed at one end of the connecting plate; the motor drives the lead screw to drive the base to lift the half shaft, so that the half shaft is convenient to mount. Through the arranged piezoresistive sensor, when the air cylinder drives the arc-shaped clamping plate to deviate the local clamping pressure of the surface of the half shaft, the PLC can automatically adjust the arc-shaped clamping plate through the air cylinder to conduct deviation correction.

Description

Technical Field

[0001] The invention belongs to the technical field of a half shaft installation device for a bulldozer, and particularly relates to a safety protection device for installing a half shaft of a bulldozer. Background Technique

[0002] ‌The half shaft of a bulldozer‌ is an important component in the transmission system of a bulldozer and is installed at the final drive box at the rear of the bulldozer body. The inner side of the half shaft is installed on the bulldozer body with an interference fit, the outer side is connected to the traveling frame through a sliding sleeve, and the driving wheel of the bulldozer is sleeved in the middle. The half shaft not only bears the mass at the rear of the bulldozer but also withstands the driving force during the driving of the driving wheel. During the installation process, the half shaft needs to be accurately aligned and fixed to ensure its stability and reliability during operation. In terms of maintenance, it is necessary to regularly check the wear condition and fastening degree of the half shaft to ensure its long-term stable operation.

[0003] The existing half shafts of bulldozers usually have a relatively large self-weight. Generally, during the installation process, the operator places the half shaft on the frame and then uses a crane to install the frame to the designated position. This method is rather cumbersome. If manual lifting is used, it is easy to cause a smashing accident due to slipping, and the safety is relatively poor. Moreover, when installing the half shaft of a bulldozer, it is easy to have a deviation in positioning, resulting in difficulty in aligning the installation holes. The traditional safety protection only relies on physical limit blocks and cannot detect the dynamic displacement and stress abnormality of the half shaft, lacking the function of real-time monitoring. Therefore, we propose a safety protection device for installing a half shaft of a bulldozer. Summary of the Invention

[0004] The purpose of the invention is to provide a safety protection device for installing a half shaft of a bulldozer to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A safety protection device for the installation of a half shaft of a bulldozer, including a base. One side above the base is fixedly connected with a fixing frame. A motor is fixedly installed on the surface of the base. The top output end of the motor is fixedly connected with a lead screw. The top end of the lead screw is in a limit rotational connection with the inner side of the upper end of the fixing frame. A guide rod is fixedly installed between the surface of one end of the fixing frame and the base. The guide rods are symmetrically distributed on both sides of the lead screw. A connecting plate is threadedly sleeved on the surface of the lead screw. Both ends of the connecting plate are slidably sleeved on the surface of the guide rod. One end of the connecting plate is fixedly installed with a base. Two groups of sliding tracks are symmetrically installed on the surface of the base. Above the base is provided a sliding plate. A limiting groove is opened at the bottom of the sliding plate. The sliding plate is slidably arranged on the surface of the sliding track through the limiting groove. At both ends of the top of the base are symmetrically installed V-shaped limiting blocks. On both sides of the base are symmetrically installed L-shaped frames. A cylinder is fixedly installed on the outer side of the L-shaped frame. A connecting shaft is slidably penetrated through the inner side of the L-shaped frame. The end of the connecting shaft is fixedly connected with the output end of the cylinder. The end of the connecting shaft is fixedly connected with an arc-shaped clamping plate.

[0006] Preferably, an inclination sensor is provided at the inner bottom of the V-shaped limiting block. The bottom of the inclination sensor is embedded and installed on the surface of the inner bottom of the V-shaped limiting block.

[0007] Preferably, anti-slip pads are provided on both sides of the inner wall of the V-shaped limiting block. The anti-slip pads are composed of polyurethane materials and are adhesively connected to the inner wall of the V-shaped limiting block.

[0008] Preferably, piezoresistive sensors are embedded on the inner surface of the arc-shaped clamping plate. There are multiple groups of piezoresistive sensors.

[0009] Preferably, a chute is vertically opened on one side surface of the fixing frame. A slider is slidably installed inside the chute. One side of the slider is fixedly connected to the connecting plate.

[0010] Preferably, a reinforcing rod is fixedly connected to one side of the slider. One end of the reinforcing rod is fixedly connected to the bottom of the base.

[0011] Preferably, a control box is fixedly installed on the outer side of the fixing frame. A PLC controller and a wireless communication module are installed inside the control box. An alarm is installed above the fixing frame.

[0012] Preferably, the PLC controller is electrically connected to the wireless communication module, the inclination sensor, the piezoresistive sensor, the motor, the cylinder, and the alarm respectively.

[0013] Preferably, a laser indicator is installed at one end of the base. Brake wheels are fixedly installed at the bottom of the base. The brake wheels are distributed at the four corners of the bottom side of the base.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The motor drives the lead screw to drive the base to lift and support the half shaft, thereby facilitating its installation.

[0015] With the piezoresistive sensor provided, when there is a deviation in the local clamping pressure of the half shaft surface by the arc-shaped clamping plate driven by the air cylinder, the PLC controller can automatically adjust the arc-shaped clamping plate through the air cylinder for deviation correction.

[0016] 3. With the inclination sensor provided, when the inclination angle of the half shaft inside the V-shaped limit block exceeds the range, the PLC controller can automatically start the sound and light alarm for flashing prompt.

[0017] 4. With the laser indicator provided, a crosshair can be projected to assist in aligning holes, facilitating the installation of the half shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front structural schematic diagram of the present invention; Figure 2 is the right structural schematic diagram of the present invention; Figure 3 is the left structural schematic diagram of the present invention; Figure 4 is the top structural schematic diagram of the present invention; Figure 5 is the internal structural schematic diagram of the control box of the present invention; Figure 6 is the structural schematic diagram of the base of the present invention.

[0019] In the figure: 1. Base; 2. Fixed frame; 3. Motor; 4. Lead screw; 5. Connecting plate; 6. Base; 7. Slide rail; 8. Slide plate; 9. Limit groove; 10. V-shaped limit block; 11. Inclination sensor; 12. Anti-slip pad; 13. L-shaped frame; 14. Air cylinder; 15. Connecting shaft; 16. Arc-shaped clamping plate; 17. Piezoresistive sensor; 18. Guide rod; 19. Chute; 20. Slide block; 21. Reinforcing rod; 22. Control box; 23. PLC controller; 24. Wireless communication module; 25. Alarm; 26. Brake wheel; 27. Laser indicator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1-6 . The present invention provides a technical solution: a safety protection device for the installation of a half shaft of a bulldozer, including a base 1. One side above the base 1 is fixedly connected with a fixing frame 2. The surface of the base 1 is fixedly installed with a motor 3. The top output end of the motor 3 is fixedly connected with a lead screw 4. The top end of the lead screw 4 is in a limit rotational connection with the inner side of the upper end of the fixing frame 2. Between the surface of one end of the fixing frame 2 and the base 1, a guide rod 18 is fixedly installed. The guide rods 18 are symmetrically distributed on both sides of the lead screw 4. A connecting plate 5 is threadedly sleeved on the surface of the lead screw 4. The two ends of the connecting plate 5 are slidably sleeved on the surface of the guide rod 18. One end of the connecting plate 5 is fixedly installed with a base 6. Two groups of sliding tracks 7 are symmetrically installed on the surface of the base 6. Above the base 6 is provided a sliding plate 8. A limiting groove 9 is opened at the bottom of the sliding plate 8. The sliding plate 8 is slidably arranged on the surface of the sliding track 7 through the limiting groove 9. At both ends of the top of the base 6, V-shaped limiting blocks 10 are symmetrically installed. On both sides of the base 6, L-shaped frames 13 are symmetrically installed. An air cylinder 14 is fixedly installed on the outer side of the L-shaped frame 13. A connecting shaft 15 is slidably penetrated through the inner side of the L-shaped frame 13. The end of the connecting shaft 15 is fixedly connected with the output end of the air cylinder 14. The end of the connecting shaft 15 is fixedly connected with an arc-shaped clamping plate 16.

[0022] In this embodiment, the operation of the motor 3 can drive the lead screw 4 to rotate. The rotation of the lead screw 4 can drive the connecting plate 5 to slide vertically on the surface of the guide rod 18. The movement of the connecting plate 5 can drive the base 6 at one end to move up and down. The movement of the base 6 can adjust the height of the sliding plate 8, facilitating the placement of the half shaft above the sliding plate 8. The V-shaped limiting blocks 10 provided can play a role in initially positioning the half shaft. The operation of the air cylinder 14 can drive the connecting shaft 15 to expand and contract, thereby driving the arc-shaped clamping plate 16 to clamp the surface of the half shaft and automatically form a circular hoop, improving the stability of the half shaft. The sliding tracks 7 provided facilitate the sliding plate 8 to drive the half shaft above to move horizontally to achieve installation.

[0023] Specifically, an inclination sensor 11 is provided at the inner bottom of the V-shaped limiting block 10, and the bottom of the inclination sensor 11 is embedded and installed on the surface of the inner bottom of the V-shaped limiting block 10.

[0024] In this embodiment, through the provided inclination sensor 11, the inclination angle of the half shaft can be measured, improving the safety of the device during use.

[0025] Specifically, anti-slip pads 12 are provided on both sides of the inner wall of the V-shaped limiting block 10. The anti-slip pads 12 are composed of polyurethane materials and are adhesively connected to the inner wall of the V-shaped limiting block 10.

[0026] In this embodiment, the anti-slip pad 12 is provided to increase the friction between the V-shaped limiting block 10 and the half shaft metal, prevent the half shaft from sliding, and avoid scratching the metal surface.

[0027] Specifically, piezoresistive sensors 17 are embedded in the inner surface of the arc-shaped clamping plate 16, and multiple groups of piezoresistive sensors 17 are distributed.

[0028] In this embodiment, by arranging a plurality of piezoresistive sensors 17 on the inner wall of the arc-shaped clamping plate 16, it is convenient to detect the pressure distribution on the contact surface between the half shaft and the arc-shaped clamping plate 16, so as to adjust it.

[0029] Specifically, a chute 19 is vertically formed on one side surface of the fixing frame 2, and a slider 20 is slidably installed inside the chute 19. One side of the slider 20 is fixedly connected to the connecting plate 5.

[0030] In this embodiment, by arranging the chute 19 and the slider 20, the stability of the connecting plate 5 and the base 6 during lifting is increased, which is convenient for long-term use.

[0031] Specifically, one side of the slider 20 is fixedly connected to a reinforcing rod 21, and one end of the reinforcing rod 21 is fixedly connected to the bottom of the base 6.

[0032] In this embodiment, by arranging the reinforcing rod 21, the overall structural strength of the base 6 is improved.

[0033] Specifically, a control box 22 is fixedly installed on the outside of the fixing frame 2. A PLC controller 23 and a wireless communication module 24 are installed inside the control box 22, and an alarm 25 is installed above the fixing frame 2.

[0034] In this embodiment, by arranging the wireless communication module 24, it is convenient for the operator to remotely control the device. When the tilt angle exceeds the range, the PLC controller 23 will automatically start the alarm 25 to flash and prompt.

[0035] Specifically, the PLC controller 23 is electrically connected to the wireless communication module 24, the inclination sensor 11, the piezoresistive sensor 17, the motor 3, the cylinder 14, and the alarm 25 respectively.

[0036] In this embodiment, by arranging the PLC controller 23, the overall intelligence of the device is improved, which is convenient for receiving signals and then controlling and using them.

[0037] Specifically, a laser indicator 27 is installed at one end of the base 6, and brake wheels 26 are fixedly installed at the bottom of the base 1. The brake wheels 26 are distributed at the four corners of the bottom side of the base 1.

[0038] In this embodiment, through the provided laser indicator 27, a crosshair can be projected to assist in hole alignment, facilitating the installation of the half shaft. The flexibility of the device is increased by the provided brake wheel 26.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for the installation of a half shaft of a bulldozer, comprising a base (1), characterized in that: Above one side of the base (1), a fixing frame (2) is fixedly connected. On the surface of the base (1), a motor (3) is fixedly installed. The top output end of the motor (3) is fixedly connected to a lead screw (4). The top end of the lead screw (4) is in a limit rotation connection with the inner side of the upper end of the fixing frame (2). Between the surface of one end of the fixing frame (2) and the base (1), a guide rod (18) is fixedly installed. The guide rods (18) are symmetrically distributed on both sides of the lead screw (4). A connecting plate (5) is threadedly sleeved on the surface of the lead screw (4). The two ends of the connecting plate (5) are slidably sleeved on the surface of the guide rod (18). One end of the connecting plate (5) is fixedly installed with a base (6). On the surface of the base (6), two groups of sliding tracks (7) are symmetrically installed. Above the base (6), there is a sliding plate (8). A limiting groove (9) is opened at the bottom of the sliding plate (8). The sliding plate (8) is slidably arranged on the surface of the sliding track (7) through the limiting groove (9). At both ends of the top of the base (6), V-shaped limiting blocks (10) are symmetrically installed. On both sides of the base (6), L-shaped frames (13) are symmetrically installed. On the outer side of the L-shaped frame (13), a cylinder (14) is fixedly installed. A connecting shaft (15) is slidably penetrated through the inner side of the L-shaped frame (13). The end of the connecting shaft (15) is fixedly connected to the output end of the cylinder (14). The end of the connecting shaft (15) is fixedly connected to an arc-shaped clamping plate (16).

2. The safety protection device for installing a half shaft of a bulldozer according to claim 1, wherein: At the inner bottom of the V-shaped limiting block (10), an inclination sensor (11) is provided. The bottom of the inclination sensor (11) is embedded and installed on the surface of the inner bottom of the V-shaped limiting block (10).

3. The safety protection device for the installation of a half shaft of a bulldozer according to claim 1, characterized in that: On both sides of the inner wall of the V-shaped limiting block (10), anti-slip pads (12) are provided. The anti-slip pads (12) are composed of polyurethane materials and are adhesively connected to the inner wall of the V-shaped limiting block (10).

4. The safety protection device for the installation of the half shaft of a bulldozer according to claim 1, characterized in that: On the inner surface of the arc-shaped clamping plate 16, piezoresistive sensors (17) are embedded. There are multiple groups of the piezoresistive sensors (17).

5. The safety protection device for the installation of the half shaft of a bulldozer according to claim 1, characterized in that: Vertically, a sliding groove (19) is opened on one side surface of the fixing frame (2). A slider (20) is slidably installed inside the sliding groove (19). One side of the slider (20) is fixedly connected to the connecting plate (5).

6. The safety protection device for installing a half shaft of a bulldozer according to claim 5, characterized in that: One side of the slider (20) is fixedly connected to a strengthening rod (21). One end of the strengthening rod (21) is fixedly connected to the bottom of the base (6).

7. The safety protection device for the installation of a bulldozer half shaft according to claim 1, characterized in that: On the outer side of the fixing frame (2), a control box (22) is fixedly installed. Inside the control box (22), a PLC controller (23) and a wireless communication module (24) are installed. Above the fixing frame (2), an alarm (25) is installed.

8. The safety protection device for the installation of a bulldozer half shaft according to claim 7, characterized in that: The PLC controller (23) is electrically connected to the wireless communication module (24), the inclination sensor (11), the piezoresistive sensor (17), the motor (3), the cylinder (14), and the alarm (25) respectively.

9. The safety protection device for the installation of a bulldozer half shaft according to claim 1, characterized in that: One end of the base (6) is installed with a laser indicator (27). At the bottom of the base (1), brake wheels (26) are fixedly installed. The brake wheels (26) are distributed at the four corners of the bottom side of the base (1).

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