Replaceable scraper knife for loading machine

Abstract

The replaceable scraper knife comprises a main knife holder and a main scraper knife body, the main knife holder is welded and fixed to the front end of a bottom plate of a bucket, the main scraper knife body is arranged at the front end of the main knife holder in a sleeved mode through a first inserting groove, a plurality of open grooves are formed in the front end of the main knife holder, and the main scraper knife body is arranged in the open grooves. A rotating shaft is rotationally arranged on the main tool apron in a penetrating mode, two clamping blocks are symmetrically and fixedly connected to the outer wall, located in the opening groove, of the rotating shaft, and two arc-shaped clamping grooves are symmetrically formed in the inner walls of the two sides of the first inserting groove. According to the utility model, the driving rod drives the rotating shaft to rotate on the main tool apron, so that the clamping block rotates in the open slot, the clamping block is matched with the arc-shaped clamping slot, or the clamping block is separated from the arc-shaped clamping slot, and the main scraper knife can be locked and unlocked on the main tool apron, so that the main scraper knife can be conveniently mounted and dismounted on the main tool apron; welding and cutting are not needed, the replacement efficiency of the scraper knife is greatly improved, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of loader accessories, in particular to a replaceable scraper blade for a loader. Background Art

[0002] A loader is a type of earthwork machinery widely used in construction projects such as roads, railways, buildings, hydropower, ports, and mines. It is mainly used to shovel bulk materials such as soil, sand, lime, and coal. It can also perform light shoveling operations on ore, hard soil, etc. By replacing different auxiliary working devices, it can also perform bulldozing, lifting, and loading and unloading of other materials such as wood.

[0003] In order to increase the service life of the loader bucket and avoid a large amount of material leakage when shoveling, a blade is usually installed at the front end of the bottom plate of the bucket so that the front end of the bottom plate of the bucket can fit more closely with the ground. However, most of the blades are currently welded to the front end of the bottom plate of the bucket. When the bucket is severely worn and needs to be replaced, the old blade needs to be cut off from the bottom plate and then a new blade needs to be welded. The operation is very troublesome and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a replaceable blade for a loader to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A replaceable shovel blade for a loader comprises a main blade seat and a main blade, the main blade seat is welded and fixed at the front end of the bottom plate of the bucket, the main blade is sleeved on the front end of the main blade seat through a first slot, a plurality of open slots are provided at the front end of the main blade seat, a rotating shaft is rotatably passed through the main blade seat, the outer wall of the rotating shaft located in the open slot is symmetrically and fixedly connected with two clamping blocks, two side inner walls of the first slot are symmetrically provided with two arc-shaped clamping slots, the clamping blocks are adapted to the arc-shaped clamping slots, both ends of the rotating shaft are transmission-connected with a driving rod, the end face of the driving rod away from the rotating shaft is provided with a hexagonal hole, and the outer walls on both sides of the main blade seat are installed with positioning mechanisms for the driving rod.

[0007] As a further solution of the utility model: the outer wall of the driving rod outside the main knife seat is provided with a first U-shaped groove, the positioning mechanism includes a baffle fixed on the side wall of the main knife seat, the baffle is located in the first slot, a square rod is slidably passed through the baffle through a square hole, the two ends of the square rod are respectively fixedly connected with a pull ring and a fork block, the fork block is adapted to the first U-shaped groove, and the outer wall of the square rod located between the baffle and the fork block is sleeved with a second spring.

[0008] As a further solution of the utility model: guard plates are welded and fixed at the corresponding positions of the outer walls of both sides of the main shovel and the opening of the first slot, the baffle is located in the first slot, and holes are penetrated through the outer walls of the guard plates and the corresponding positions of the driving rod.

[0009] As a further solution of the utility model: a transmission groove is provided on the end face of the rotating shaft, a transmission rod is fixedly connected to one end of the driving rod facing the transmission groove, one end of the transmission rod is located in the transmission groove, a first spring is sleeved on the outer wall of the transmission rod located between the rotating shaft and the driving rod, a sealing ring is nested on the outer wall of the driving rod, the outer wall of the sealing ring is fitted with the inner wall of the socket, a second U-shaped groove is provided on the outer wall of the driving rod, and the second U-shaped groove is adapted to the fork block.

[0010] As a further solution of the utility model: side tool seats are welded and fixed at the front ends of the two side plates of the bucket, the bottom ends of the side tool seats are welded and fixed to the top of the main tool seat, and the bottom ends of the side tool seats are provided with grooves for passing the main blade, and two side blades are fixedly connected to the top of the main blade, and the side blades are mounted at the front ends of the corresponding side tool seats through second slots.

[0011] As a further solution of the utility model: a plurality of positioning grooves are provided at the front end of the side blade seat, and positioning pins are fixedly penetrated at positions corresponding to the positioning grooves on the side shovel blade, and the positioning pins are adapted to the positioning grooves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the driving rod drives the rotating shaft to rotate on the main tool seat, so that the clamping block rotates in the open groove, thereby making the clamping block cooperate with the arc-shaped clamping groove, or making the clamping block disengage from the arc-shaped clamping groove, so as to realize locking and unlocking of the main scraper on the main tool seat, thereby facilitating the installation and disassembly of the main scraper on the main tool seat, without the need for welding and cutting, greatly improving the efficiency of scraper replacement, and simple and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the structure of a replaceable blade for a loader.

[0015] Figure 2 The present invention is a schematic structural diagram of a main blade seat in a replaceable blade for a loader.

[0016] Figure 3 The present invention is a schematic structural diagram of a replaceable side blade seat for a loader.

[0017] Figure 4 for Figure 3 Cross-sectional view at point A.

[0018] Figure 5 The present invention is a schematic diagram of the structure of a locking mechanism in a replaceable blade for a loader.

[0019] Among them, bucket 1, base plate 2, side plate 3, main blade seat 4, side blade seat 5, groove 6, rotating shaft 7, opening groove 8, clamping block 9, transmission groove 10, driving rod 11, transmission rod 12, first spring 13, first U-shaped groove 14, second U-shaped groove 15, hexagonal hole 16, sealing ring 17, baffle 18, square rod 19, pull ring 20, fork block 21, second spring 22, main blade 23, first slot 24, arc-shaped slot 25, guard plate 26, socket 27, side blade 28, second slot 29, positioning groove 30, positioning pin 31. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 In an embodiment of the utility model, a replaceable shovel blade for a loader includes a main blade seat 4 and a main blade 23. The main blade seat 4 is welded and fixed at the front end of the bottom plate 2 of the bucket 1. The main blade 23 is sleeved on the front end of the main blade seat 4 through a first slot 24. A plurality of open slots 8 are provided at the front end of the main blade seat 4. A rotating shaft 7 is rotatably penetrated on the main blade seat 4. The outer wall of the rotating shaft 7 located in the open slot 8 is symmetrically and fixedly connected with two clamping blocks 9. Two arc-shaped clamping grooves 25 are symmetrically provided on the inner walls on both sides of the first slot 24. The clamping blocks 9 are adapted to the arc-shaped clamping grooves 25. Both ends of the rotating shaft 7 are transmission-connected with a driving rod 11. The end surface of the driving rod 11 away from the rotating shaft 7 is provided with a hexagonal hole 16. The outer walls on both sides of the main blade seat 4 are installed with positioning mechanisms for the driving rod 11.

[0022] The utility model adopts the above scheme. When installing the main scraper 23, after the main scraper 23 is put on the main tool seat 4 through the first slot 24, the driving rod 11 is rotated by cooperating with the hexagonal wrench and the hexagonal hole 16, thereby driving the rotating shaft 7 to rotate on the main tool seat 4, so that the clamping block 9 is rotated in the opening groove 8 to the corresponding arc-shaped clamping groove 25, and then the positioning mechanism is operated to lock the driving rod 11. When the main scraper 23 needs to be removed, it is only necessary to unlock the driving rod 11 and use the driving rod 11 to drive the rotating shaft 7 to rotate so that the clamping block 9 is separated from the arc-shaped clamping groove 25, and the main scraper 23 can be pulled out from the main tool seat 4. The operation is simple and convenient.

[0023] Specific combination Figure 3-5 In one embodiment of the utility model, a first U-shaped groove 14 is formed on the outer wall of the driving rod 11 outside the main tool seat 4, and the positioning mechanism includes a baffle 18 fixed on the side wall of the main tool seat 4, and the baffle 18 is located in the first slot 24. A square rod 19 is slidably penetrated through a square hole on the baffle 18, and a pull ring 20 and a fork block 21 are fixedly connected at both ends of the square rod 19, respectively. The fork block 21 is adapted to the first U-shaped groove 14, and a second spring 22 is sleeved on the outer wall of the square rod 19 between the baffle 18 and the fork block 21.

[0024] The cooperation between the fork block 21 and the first U-shaped groove 14 can prevent the driving rod 11 from rotating relative to the main tool holder 4, and the fork block 21 can be driven to move by simply pulling the square rod 19 through the pull ring 20, which is simple and convenient to operate.

[0025] Specific combination Figure 3-5 On the basis of the previous embodiment, further, guard plates 26 are welded and fixed to the corresponding positions of the outer walls on both sides of the main shovel blade 23 and the opening of the first slot 24, the baffle 18 is located in the first slot 24, and a socket 27 is penetrated through the outer wall of the guard plate 26 and the corresponding position of the driving rod 11.

[0026] By setting the guard plate 26, the fork block 21, the square rod 19 and the like can be prevented from directly contacting the material when the bucket is working, thereby preventing the fork block 21 from being disengaged from the first U-shaped groove 14. The setting of the socket 27 facilitates the operation of the drive rod 11.

[0027] Specific combination Figure 3-5 On the basis of the previous embodiment, further, a transmission groove 10 is provided on the end face of the rotating shaft 7, and a transmission rod 12 is fixedly connected to one end of the driving rod 11 facing the transmission groove 10, and one end of the transmission rod 12 is located in the transmission groove 10, and the transmission rod 12 is a non-cylindrical rod body, preferably a regular polygonal rod body, and the transmission groove 10 is adapted to the transmission rod 12. The outer wall of the transmission rod 12 between the rotating shaft 7 and the driving rod 11 is sleeved with a first spring 13, and the outer wall of the driving rod 11 is nested with a sealing ring 17, and the outer wall of the sealing ring 17 is in contact with the inner wall of the jack 27, and the outer wall of the driving rod 11 is provided with a second U-shaped groove 15, and the second U-shaped groove 15 is adapted to the fork block 21.

[0028] By adopting the above solution, after the installation of the main blade 23 is completed, the end of the driving rod 11 is inserted into the insertion hole 27, and the sealing ring 17 is fitted with the inner wall of the insertion hole 27, and the plug block 21 is matched with the first U-shaped groove 14, so that the driving rod 11 can be prevented from rotating without human operation, and the material can be prevented from entering the sub-first slot 24 from the insertion hole 27. When the main blade 23 needs to be removed, it is only necessary to pull the fork block 21 through the pull ring 20 so that the plug block 21 and the first U-shaped groove 14 are engaged. A U-shaped groove 14 is disengaged, and then the transmission rod 12 is pressed into the first slot 24 to align the second U-shaped groove 15 with the fork block 21. Then the transmission rod 12 is rotated to move the block 9 to the outside of the arc-shaped slot 25, and then the pull ring 20 is released to make the fork block 21 cooperate with the second U-shaped groove 15. At this time, the transmission rod 12 is disengaged from the socket 27 and is locked in the first slot 24. At the same time, the block 9 is located outside the arc-shaped slot 25, so the main shovel 23 can be removed from the main tool seat 4.

[0029] Specific combination Figure 1-3 In one embodiment of the utility model, side cutter seats 5 are welded and fixed at the front ends of the two side plates 3 of the bucket 1, the bottom ends of the side cutter seats 5 are welded and fixed to the top of the main cutter seat 4, and the bottom ends of the side cutter seats 5 are provided with grooves 6 for passing the main cutter 23, and the tops of the main cutter 23 are fixedly connected to two side cutters 28, and the side cutters 28 are sleeved on the front ends of the corresponding side cutter seats 5 through second slots 29.

[0030] Furthermore, a plurality of positioning grooves 30 are formed at the front end of the side blade holder 5 , and positioning pins 31 are fixedly penetrated at positions corresponding to the positioning grooves 30 on the side scraper 28 , and the positioning pins 31 are matched with the positioning grooves 30 .

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A replaceable blade for a loader, characterized in that: The invention comprises a main blade seat (4) and a main shovel blade (23), wherein the main blade seat (4) is welded and fixed at the front end of the bottom plate (2) of the bucket (1), and the main shovel blade (23) is sleeved on the front end of the main blade seat (4) through a first slot (24). The front end of the main blade seat (4) is provided with a plurality of opening slots (8). A rotating shaft (7) is rotatably penetrated on the main blade seat (4), and the outer wall of the rotating shaft (7) located in the opening slot (8) is symmetrically and fixedly connected with two clamping blocks (9), and the inner walls on both sides of the first slot (24) are symmetrically provided with two arc-shaped clamping slots (25), and the clamping blocks (9) are adapted to the arc-shaped clamping slots (25). Both ends of the rotating shaft (7) are transmission-connected with a driving rod (11), and the end surface of the driving rod (11) away from the rotating shaft (7) is provided with a hexagonal hole (16), and the outer walls on both sides of the main blade seat (4) are installed with a positioning mechanism for the driving rod (11).

2. A replaceable blade for a loader according to claim 1, characterized in that: The outer wall of the driving rod (11) outside the main knife seat (4) is provided with a first U-shaped groove (14); the positioning mechanism comprises a baffle (18) fixed on the side wall of the main knife seat (4); the baffle (18) is located in a first slot (24); a square rod (19) is slidably penetrated through a square hole on the baffle (18); a pull ring (20) and a fork block (21) are respectively fixedly connected at both ends of the square rod (19); the fork block (21) is adapted to the first U-shaped groove (14); and a second spring (22) is sleeved on the outer wall of the square rod (19) between the baffle (18) and the fork block (21).

3. A replaceable blade for a loader according to claim 2, characterized in that: Guard plates (26) are welded and fixed at the corresponding positions of the outer walls of both sides of the main scraper (23) and the opening of the first slot (24); the baffle plate (18) is located in the first slot (24); and a plug hole (27) is penetrated at the corresponding position of the outer wall of the guard plate (26) and the driving rod (11).

4. A replaceable blade for a loader according to claim 3, characterized in that: The end surface of the rotating shaft (7) is provided with a transmission groove (10); one end of the driving rod (11) facing the transmission groove (10) is fixedly connected with a transmission rod (12); one end of the transmission rod (12) is located in the transmission groove (10); an outer wall of the transmission rod (12) located between the rotating shaft (7) and the driving rod (11) is sleeved with a first spring (13); a sealing ring (17) is embedded in the outer wall of the driving rod (11); the outer wall of the sealing ring (17) is in contact with the inner wall of the insertion hole (27); a second U-shaped groove (15) is provided on the outer wall of the driving rod (11); and the second U-shaped groove (15) is adapted to the fork block (21).

5. The replaceable blade for a loader according to claim 1, characterized in that: Side blade seats (5) are welded and fixed at the front ends of the two side plates (3) of the bucket (1), the bottom ends of the side blade seats (5) are welded and fixed to the top of the main blade seat (4), and the bottom ends of the side blade seats (5) are provided with grooves (6) for inserting the main blade (23), and the tops of the main blades (23) are fixedly connected with two side blades (28), and the side blades (28) are sleeved on the front ends of the corresponding side blade seats (5) through second slots (29).

6. A replaceable blade for a loader according to claim 5, characterized in that: The front end of the side blade seat (5) is provided with a plurality of positioning grooves (30), and a positioning pin (31) is fixedly provided at a position corresponding to each positioning groove (30) on the side shovel blade (28), and the positioning pin (31) is adapted to the positioning groove (30).

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