Automatic anti-falling hopper locking mechanism of mining dump truck

Abstract

The utility model belongs to the field of mining dump trucks, and provides an automatic anti-falling truck hopper locking mechanism of a mining dump truck, which comprises a truck head and a truck frame fixedly connected to the right side of the truck head; the locking assembly is arranged on the right side of the vehicle head and comprises a U-shaped frame fixedly connected to the bottom of the vehicle frame, the top of the U-shaped frame is fixedly connected with a transverse plate and a connecting frame, hydraulic air cylinders are arranged on the left side of the transverse plate, limiting grooves are formed in the two sides of the inner wall of the connecting frame, and trapezoidal blocks are arranged at the output ends of the two hydraulic air cylinders. Limiting blocks are fixedly connected to the two sides of the trapezoidal block; the locking assembly drives the trapezoidal block to link the long rod and the top plate through hydraulic pressure, dynamic supporting and locking of the bottom of the car hopper are achieved, the car frame and the car hopper are flexibly connected in cooperation with the steel rope, and the car hopper can be effectively prevented from falling due to connection failure or accidental inclination; the accurate matching of the limiting block and the limiting groove ensures that the locking action is stable, the design of the pulley and the bearing reduces the friction loss, and the discharging process is more efficient and smoother.

Description

Technical Field

[0001] This utility model belongs to the field of mining dump trucks, specifically an automatic anti-falling truck bed locking mechanism for mining dump trucks. Background Technology

[0002] Dump trucks are the main tools for transporting building materials and earthwork in engineering construction. Due to their simple structure and high transportation efficiency, they are widely used in highway construction, urban infrastructure construction, and real estate development, thus achieving rapid development. When using dump trucks in mining, the safety locking and anti-fall-off performance of the truck bed are the key to ensuring operational safety.

[0003] Traditional mining dump trucks often use mechanical buckles, bolts, or simple hydraulic supports as their locking mechanisms. These passive designs result in insufficient locking reliability and lack a dynamic support mechanism for the bottom of the truck bed. When the connecting parts between the truck bed and the frame (such as hinge shafts or hydraulic cylinders) suddenly fail, they cannot respond quickly and lock the truck bed, which can lead to serious safety accidents. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an automatic anti-falling truck bed locking mechanism for mining dump trucks, so as to solve the problem that the prior art cannot prevent falling.

[0005] An automatic anti-fall locking mechanism for the dump truck bed of a mining vehicle includes:

[0006] The front of the vehicle, on the right side of which the frame is fixedly connected;

[0007] A locking assembly is located on the right side of the front of the vehicle. The locking assembly includes a U-shaped frame fixedly connected to the bottom of the frame. A horizontal plate and a connecting frame are fixedly connected to the top of the U-shaped frame. A hydraulic cylinder is provided on the left side of the horizontal plate. Limit grooves are provided on both sides of the inner wall of the connecting frame. A trapezoidal block is provided at the output end of the two hydraulic cylinders. Limit blocks are fixedly connected to both sides of the trapezoidal block. Vertical seats are provided on both sides of the top of the U-shaped frame. A first circular hole and a second circular hole are respectively provided on the vertical seats and the top of the U-shaped frame. Long rods are inserted into the inner cavities of the first circular hole and the second circular hole. A top plate is fixedly connected to the top of the two long rods. A connecting seat is fixedly connected to the bottom of the top plate. A pulley is rotatably connected to the inner cavity of the connecting seat through a bearing.

[0008] Preferably, the trapezoidal block is fixedly connected to the output ends of the two hydraulic cylinders and is slidably connected to the connecting frame in the limiting groove via a limiting block.

[0009] Preferably, the bottom of each of the two long rods is fixedly connected with a retaining ring, and two sets are provided, one for the first round hole and one for the second round hole.

[0010] Preferably, a crossbar is fixedly connected to the inner cavity of the frame, and two fixing plates are rotatably connected to the outer ring of the crossbar through bearings. A truck bed is fixedly connected to the top of the two fixing plates, a discharge chute is provided on the right side of the truck bed, and the bottom left side of the truck bed is fixedly connected to the top plate.

[0011] Preferably, two first steel columns and two second steel columns are fixedly connected to both sides of the truck bed and the frame, and steel ropes and clamping components are fixedly connected between the first steel columns and the second steel columns. The clamping components are located on the right side of the truck bed.

[0012] Preferably, the snap-fit ​​assembly includes two fixed seats fixedly connected to the right side of the truck bed. The top and bottom of each of the two fixed seats are provided with square slots. A compression spring is fixedly connected to the inner cavity of each square slot. Two sets of compression springs located on the same vertical horizontal line are provided. Positioning plates are fixedly connected to the top and bottom of each set of compression springs. A connecting rod is provided between each pair of positioning plates. A square block is fixedly connected to one side of each of the two connecting rods. A closing door is fixedly connected to the left side of each of the two square blocks.

[0013] Preferably, the outer surface of the compression spring is coated with a tin-plated layer, and the circular shape formed between each two positioning plates is adapted to the diameter of the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses a locking component to hydraulically drive a trapezoidal block to link a long rod and a top plate, thereby achieving dynamic support and locking of the bottom of the truck bed. Combined with a steel cable to flexibly connect the frame and the truck bed, it can effectively prevent the truck bed from falling due to connection failure or accidental tilting. The precise cooperation between the limit block and the limit groove ensures stable locking action, while the pulley and bearing design reduces friction loss, making the unloading process more efficient and smooth.

[0016] 2. This utility model uses the elastic force of the compression spring in the snap-fit ​​assembly to push the closed door tightly against the truck bed, locking the discharge chute to prevent material leakage. It can be quickly opened by manual pushing during unloading. The tin-plated layer on the surface of the compression spring enhances its corrosion resistance and adapts to harsh working conditions. The combination of steel rope and rigid locking structure improves the overall impact resistance, and the friction-reducing design extends the service life of the components. This integrated solution is easy to operate, highly versatile, and effectively solves the shortcomings of passive protection in traditional locking mechanisms, balancing safety and efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1Enlarged 3D structural diagram at point A;

[0019] Figure 3 This is a bottom-view three-dimensional structural diagram of the present invention;

[0020] Figure 4 This utility model Figure 1 A schematic diagram of the overall structure of the locking assembly.

[0021] In the picture:

[0022] 1. Carriage head; 101. Carriage frame; 102. Crossbar; 103. Fixing plate; 104. Carriage bed; 105. Discharge chute; 106. First steel column; 107. Second steel column; 108. Steel rope; 2. Locking assembly; 201. U-shaped frame; 202. Crossbar; 203. Connecting frame; 204. Hydraulic cylinder; 205. Limiting groove; 206. Trapezoidal block; 207. Limiting block; 208. Vertical seat; 209. First round hole; 210. Second round hole; 211. Long rod; 212. Top plate; 213. Connecting seat; 214. Pulley; 215. Retaining ring; 3. Snap-fit ​​assembly; 301. Fixing seat; 302. Square groove; 303. Compression spring; 304. Positioning plate; 305. Connecting rod; 306. Square block; 307. Enclosing door. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the figures and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0024] Example 1:

[0025] Please see Figure 1 and Figure 3 and Figure 4 As shown, an automatic anti-fall locking mechanism for the dump truck bed of a mining vehicle includes:

[0026] The front of the vehicle 1 has a frame 101 fixedly connected to its right side;

[0027] Locking assembly 2 is located on the right side of the front of the vehicle 1. Locking assembly 2 includes a U-shaped frame 201 fixedly connected to the bottom of the frame 101. A horizontal plate 202 and a connecting frame 203 are fixedly connected to the top of the U-shaped frame 201. A hydraulic cylinder 204 is located on the left side of the horizontal plate 202. Limit grooves 205 are formed on both sides of the inner wall of the connecting frame 203. Trapezoidal blocks 206 are provided at the output ends of the two hydraulic cylinders 204. Both sides of the trapezoidal blocks 206 are fixed... Connecting the limit block 207, vertical seats 208 are provided on both sides of the top of the U-shaped frame 201. The top of the vertical seats 208 and the top of the U-shaped frame 201 are respectively provided with a first circular hole 209 and a second circular hole 210. Long rods 211 are inserted into the inner cavities of the first circular hole 209 and the second circular hole 210. The top of the two long rods 211 is fixedly connected to a top plate 212. The bottom of the top plate 212 is fixedly connected to a connecting seat 213. The inner cavity of the connecting seat 213 is rotatably connected by a bearing. There is a pulley 214, and a trapezoidal block 206 is fixedly connected to the output end of two hydraulic cylinders 204 and slidably connected to the connecting frame 203 in the limiting groove 205 through a limiting block 207. The bottom of each of the two long rods 211 is fixedly connected to a retaining ring 215. A first round hole 209 and a second round hole 210 are provided as a set, and two sets are provided. A crossbar 102 is fixedly connected to the inner cavity of the frame 101. The outer ring of the crossbar 102 is rotatably connected to two fixing plates 10 through bearings. 3. A truck bed 104 is fixedly connected to the top of the two fixed plates 103. A discharge chute 105 is provided on the right side of the truck bed 104. The bottom left side of the truck bed 104 is fixedly connected to the top plate 212. Two first steel columns 106 and second steel columns 107 are fixedly connected to the sides of the truck bed 104 and the frame 101, respectively. A steel rope 108 is fixedly connected between the first steel column 106 and the second steel column 107. A clamping assembly 3 is provided on the right side of the truck bed 104.

[0028] Specifically, the trapezoidal block 206 is moved by the hydraulic cylinder 204, which drives the long rod 211 and the top plate 212 to rise and fall, thereby supporting and locking the bottom of the truck bed 104 and preventing the truck bed 104 from falling accidentally. The pulley 214 can reduce the friction when the truck bed 104 is raised and lowered, and the steel rope 108 connects and enhances the stability of the truck bed 104 and the frame 101.

[0029] As can be seen from the above, in the locked state: the hydraulic cylinder 204 retracts, driving the trapezoidal block 206 to move to the left. The trapezoidal block 206 pushes the long rod 211 downward through the inclined plane. The top plate 212 is close to the bottom left side of the bucket 104, supporting and fixing the bucket 104 to the frame 101, preventing the bucket 104 from falling due to accidental tilting or connection failure. In the unlocked state: the hydraulic cylinder 204 extends, pushing the trapezoidal block 206 to move to the right. The long rod 211 moves upward under the weight of the bucket 104. The top plate 212 lifts the bucket 104. When lifted, the bucket 104 rotates to the right on the crossbar 102 through the bearing, allowing for normal overturning and unloading. At the same time, the limiting block 207 cooperates with the limiting groove 205 to ensure that the trapezoidal block 206 does not deviate during movement. The pulley 214 is designed to reduce the frictional resistance when the long rod 211 is raised and lowered, improving the response efficiency.

[0030] Example 2:

[0031] Please see Figure 1 and Figure 2 As shown, the snap-fit ​​assembly 3 includes two fixed seats 301 fixedly connected to the right side of the truck bed 104. The top and bottom of each fixed seat 301 are provided with square grooves 302. The inner cavity of each square groove 302 is fixedly connected with a compression spring 303. Two compression springs 303 on the same vertical horizontal line are arranged as a group, and two groups are provided. The top and bottom of each group of compression springs 303 are fixedly connected with positioning plates 304. A connecting rod 305 is provided between each pair of positioning plates 304. A square block 306 is fixedly connected to one side of each pair of connecting rods 305. A closing door 307 is fixedly connected to the left side of each pair of square blocks 306. The outer surface of the compression springs 303 is coated with a tin-plated layer. The circular shape formed between each pair of positioning plates 304 is adapted to the diameter of the connecting rod 305.

[0032] Specifically, the elastic force of the compression spring 303 keeps the closed door 307 pressed tightly against the right side of the truck bed 104, locking the discharge chute 105 to prevent materials from falling; when unloading is required, external force pushes the closed door 307 and the compression spring 303 to open the discharge chute 105.

[0033] As can be seen from the above, in the closed state: the compression spring 303 is in a naturally extended state, pushing the positioning plate 304 and the connecting rod 305 to move outward, so that the closed door 307 fits tightly against the right side of the truck bed 104, locking the discharge chute 105 and preventing materials from falling; in the open unloading state: if the closed door 307 is pushed inward by external force, the compression spring 303 is compressed by force, the connecting rod 305 slides in the groove of the positioning plate 304, the closed door 307 moves to both sides, exposing the discharge chute 105, and the materials can be unloaded through the discharge chute 105; the tin plating layer can enhance the corrosion resistance of the compression spring 303 and extend the service life of the snap-fit ​​assembly 3 in humid and dusty environments.

[0034] Working principle: During fall prevention, the hydraulic cylinder 204 retracts to the left, driving the trapezoidal block 206 to move to the left along the limiting groove 205 via the limiting block 207. During movement, the inclined surface of the trapezoidal block 206 pushes the long rod 211 downward, causing the top plate 212 to fit tightly against the bottom left side of the truck bed 104. The top plate 212, through its supporting force, fixes the truck bed 104 to the frame 101. At the same time, it works with the steel rope 108 to connect the first steel column 106 and the second steel column 107, preventing the truck bed from falling due to connection failure or accidental tilting. During unloading, a manual inward pushing force is applied, compressing the spring 303 and causing it to contract. The connecting rod 305 slides within the groove of the positioning plate 304, closing the door 3. 07 moves to both sides, exposing the discharge chute 105, through which materials can be smoothly unloaded. At the same time, the tin-plated layer enhances the corrosion resistance of the compression spring 303, making it suitable for harsh working conditions such as humidity and dust. Subsequently, the hydraulic cylinder 204 extends to the right, pushing the trapezoidal block 206 to move to the right along the limiting groove 205, releasing the downward pressure on the long rod 211. Under its own weight, the bucket 104 rotates to the right on the crossbar 102 through the bearing, driving the long rod 211 and the top plate 212 to move upward. The bucket 104 flips to the unloading angle, and the material is discharged through the discharge chute 105. In addition, the pulley 214 reduces the frictional resistance when the long rod is raised and lowered, improving the response efficiency.

[0035] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A mine dump truck automatic anti-falling car hopper locking mechanism, characterized in that, include: The front of the vehicle (1) is fixedly connected to the right side of the front of the vehicle (1); A locking assembly (2) is located on the right side of the front of the vehicle (1). The locking assembly (2) includes a U-shaped frame (201) fixedly connected to the bottom of the frame (101). A horizontal plate (202) and a connecting frame (203) are fixedly connected to the top of the U-shaped frame (201). A hydraulic cylinder (204) is provided on the left side of the horizontal plate (202). Limit grooves (205) are provided on both sides of the inner wall of the connecting frame (203). A trapezoidal block (206) is provided at the output end of the two hydraulic cylinders (204). Both sides of the trapezoidal block (206) are fixedly connected to... The limiting block (207) has vertical seats (208) on both sides of the top of the U-shaped frame (201). The top of the vertical seats (208) and the top of the U-shaped frame (201) are respectively provided with a first round hole (209) and a second round hole (210). The inner cavities of the first round hole (209) and the second round hole (210) are each inserted with a long rod (211). The top of the two long rods (211) are fixedly connected to a top plate (212). The bottom of the top plate (212) is fixedly connected to a connecting seat (213). The inner cavity of the connecting seat (213) is rotatably connected to a pulley (214) through a bearing.

2. The automatic anti-fall locking mechanism for the dump truck bed of a mining vehicle as described in claim 1, characterized in that: The trapezoidal block (206) is fixedly connected to the output ends of the two hydraulic cylinders (204) and is slidably connected to the connecting frame (203) in the limiting groove (205) through the limiting block (207).

3. The automatic anti-falling hopper locking mechanism of the mine dump truck of claim 1, characterized in that: The bottom of each of the two long rods (211) is fixedly connected with a retaining ring (215), and a first round hole (209) and a second round hole (210) are provided as a set, with a total of two sets.

4. The automatic anti-falling hopper locking mechanism of the mine dump truck of claim 1, characterized in that: A crossbar (102) is fixedly connected to the inner cavity of the frame (101). Two fixing plates (103) are rotatably connected to the outer ring of the crossbar (102) through bearings. A bucket (104) is fixedly connected to the top of the two fixing plates (103). A discharge chute (105) is provided on the right side of the bucket (104). The bottom left side of the bucket (104) is fixedly connected to the top plate (212).

5. The automatic anti-falling hopper locking mechanism of the mine dump truck of claim 4, characterized in that: The truck bed (104) and the frame (101) are respectively fixedly connected to two first steel columns (106) and second steel columns (107). Steel ropes (108) are fixedly connected between the first steel columns (106) and the second steel columns (107). A clamping assembly (3) is provided on the right side of the truck bed (104).

6. The automatic anti-fall locking mechanism for the dump truck bed of a mining vehicle as described in claim 5, characterized in that: The snap-fit ​​assembly (3) includes two fixed seats (301) fixedly connected to the right side of the truck bed (104). The top and bottom of the two fixed seats (301) are provided with square grooves (302). The inner cavity of the square grooves (302) is fixedly connected with compression springs (303). The two compression springs (303) on the same vertical horizontal line are set as a group, and two groups are provided. The top and bottom of the two groups of compression springs (303) are fixedly connected with positioning plates (304). A connecting rod (305) is provided between each pair of positioning plates (304). A square block (306) is fixedly connected to one side of each of the two connecting rods (305). A closing door (307) is fixedly connected to the left side of each of the two square blocks (306).

7. The automatic anti-falling hopper locking mechanism of the mine dump truck of claim 6, characterized in that: The outer surface of the compression spring (303) is coated with a tin-plated layer, and the circular shape formed between each pair of positioning plates (304) is adapted to the diameter of the connecting rod (305).

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