Automatic brake device of trolley

Abstract

The utility model discloses a handcart automatic brake device which comprises a bearing plate, a plurality of connecting blocks are fixedly installed on the bottom wall of the bearing plate, rotating shafts are rotatably installed between the two connecting blocks on the same side in a penetrating mode, wheels are fixedly installed on the outer walls of the two ends of the two rotating shafts, a prismatic sleeve is fixedly installed on the outer wall of one rotating shaft, and the prismatic sleeve is fixedly installed on the outer wall of the other rotating shaft. A lower pressing rod is slidably installed on the upper end face of the bearing plate in a penetrating mode, a lower pressing plate is fixedly installed at the end of the lower pressing rod, and a connecting plate is fixedly installed on the outer wall of the lower pressing rod. Through the arrangement of the pressing spring, the pressing rod, the pressing plate, the prismatic sleeve and other components, under the elastic action of the pressing spring, the pressing rod can drive the pressing plate to move downwards, the pressing plate drives the anti-skid pad to be attached to the outer wall of the prismatic sleeve, and therefore the prismatic sleeve can be extruded, the limiting effect on one rotating shaft is achieved, and the rotating shaft is prevented from being damaged. Therefore, effective braking of the trolley is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to an automatic braking device for trolleys. Background Art

[0002] A handcart is a transport vehicle that is pushed and pulled by manpower. It is the ancestor of all vehicles. Handcarts are widely used in production and life because they are inexpensive, simple to maintain, easy to operate, and light in weight. They can work in places where motor vehicles are inconvenient to use. They are particularly suitable for transporting lighter items over short distances.

[0003] On construction sites, carts are generally used to transport construction materials. In the existing technology, traditional construction carts are generally simple and do not have a braking system, resulting in a poor safety factor. When there are a lot of materials, it is difficult to stop the cart in time due to the large inertia, making it easy for the cart to hit others, resulting in insufficient safety. Therefore, it is necessary to redesign the automatic braking device of the cart to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an automatic braking device for a trolley.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The automatic brake device of the trolley includes a load-bearing plate, a plurality of connecting blocks are fixedly installed on the bottom wall of the load-bearing plate, a rotating shaft is rotatably installed between the two connecting blocks on the same side, wheels are fixedly installed on the outer walls of both ends of the two rotating shafts, a prismatic sleeve is fixedly installed on the outer wall of one of the rotating shafts, a lower pressure rod is slidably installed on the upper surface of the load-bearing plate, a washing lower pressure plate is fixedly installed on the end of the lower pressure rod, a connecting plate is fixedly installed on the outer wall of the lower pressure rod, a lower pressure spring is installed on the outer wall of the lower pressure rod, and the two ends of the lower pressure spring are respectively connected to the upper end of the load-bearing plate The upper surface and the bottom wall of the connecting plate are elastically connected, and a rotating block is rotatably installed on the upper end surface of the connecting plate, and the outer walls on both sides of the carrying plate are fixedly installed with a connecting frame, and the two connecting frames are rotatably installed with connecting blocks through a connecting mechanism, and the ends of the two connecting blocks are fixedly installed with baffles, and the outer walls of the two connecting frames are slid through and installed with fixing pins. The outer walls of the two baffles are provided with jacks that cooperate with the fixing pins, and the outer walls of the two fixing pins are fixedly installed with shift blocks, and the inner walls of the two shift blocks are connected to the outer wall of the connecting frame on the same side through a fixing mechanism.

[0007] Preferably, the connection mechanism includes a connection shaft fixedly mounted inside the connection frame, and the connection block is rotatably mounted on the outer wall of the connection shaft.

[0008] Preferably, the fixing mechanism includes a fixing spring installed on the outer wall of the fixing pin, and two ends of the fixing spring are elastically connected to the outer wall of the connecting frame and the inner wall of the shifting block respectively.

[0009] Preferably, an anti-slip pad is fixedly installed on the inner wall of the lower pressing plate, and the anti-slip pad is made of rubber.

[0010] Preferably, a handle is fixedly mounted on the upper end surface of the rotating block, and a clamping block is fixedly mounted on the outer wall of the rotating block.

[0011] Preferably, a support plate is fixedly mounted on the upper end surface of the carrier plate, and a clamping groove cooperating with the support plate is formed on the bottom wall of the clamping block.

[0012] Beneficial effects of the utility model:

[0013] 1. By arranging components such as a downward pressure spring, a downward pressure rod, a downward pressure plate and a prismatic sleeve, the downward pressure rod can drive the downward pressure plate to move downward under the elastic action of the downward pressure spring, and the downward pressure plate can drive the anti-slip pad to fit the outer wall of the prismatic sleeve, thereby squeezing the prismatic sleeve to achieve a limiting effect on one of the rotating shafts, thereby achieving effective braking of the cart.

[0014] 2. By setting up components such as a baffle, a fixing pin and a fixing spring, when the baffle is in a vertical upright state, the fixing spring can drive the fixing pin to move into the insertion hole, thereby fixing the baffle. Through the cooperation of the two vertically upright baffles, objects can be prevented from sliding from both sides of the load-bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the automatic braking device for a trolley proposed in the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the vertical cross-section structure;

[0017] Figure 3 This is a side structural diagram of the automatic braking device for a trolley proposed in the present invention;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B in FIG.

[0020] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at point C in FIG.

[0021] In the figure: 1 bearing plate, 2 connecting block, 3 rotating shaft, 4 wheel, 5 prismatic sleeve, 6 lower pressure rod, 7 lower pressure plate, 8 anti-slip pad, 9 connecting plate, 10 lower pressure spring, 11 rotating block, 12 handle, 13 clamping block, 14 support plate, 15 connecting frame, 16 connecting shaft, 17 connecting block, 18 baffle, 19 fixing pin, 20 shifting block, 21 fixing spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-6 The automatic braking device of the trolley includes a carrying plate 1, a plurality of connecting blocks 2 are fixedly installed on the bottom wall of the carrying plate 1, a rotating shaft 3 is rotatably installed between the two connecting blocks 2 on the same side, wheels 4 are fixedly installed on the outer walls of both ends of the two rotating shafts 3, a prismatic sleeve 5 is fixedly installed on the outer wall of one of the rotating shafts 3, a lower pressure rod 6 is slidably installed on the upper end surface of the carrying plate 1, a lower pressure plate 7 is fixedly installed on the end of the lower pressure rod 6, and an anti-slip pad 8 is fixedly installed on the inner wall of the lower pressure plate 7. The anti-slip pad 8 is made of rubber. The rubber material has good elasticity and softness, which enables it to form a closer contact between the surface and the object, thereby increasing friction and improving the friction coefficient.

[0024] A connecting plate 9 is fixedly installed on the outer wall of the lower pressure rod 6, and a lower pressure spring 10 is installed on the outer wall of the lower pressure rod 6. The two ends of the lower pressure spring 10 are elastically connected to the upper end surface of the supporting plate 1 and the bottom wall of the connecting plate 9 respectively. A rotating block 11 is rotatably installed on the upper end surface of the connecting plate 9, and a handle 12 is fixedly installed on the upper end surface of the rotating block 11. A clamping block 13 is fixedly installed on the outer wall of the rotating block 11. A support plate 14 is fixedly installed on the upper end surface of the supporting plate 1. A clamping groove that cooperates with the support plate 14 is provided on the bottom wall of the clamping block 13. Connecting frames 15 are fixedly installed on the outer walls of both sides of the supporting plate 1. Connecting blocks 17 are rotatably installed inside the two connecting frames 15 through a connecting mechanism. The connecting mechanism includes a connecting shaft 16 fixedly installed inside the connecting frame 15, and the connecting block 17 is rotatably installed on the outer wall of the connecting shaft 16.

[0025] The ends of the two connecting blocks 17 are fixedly installed with baffles 18, the outer walls of the two connecting frames 15 are slidably penetrated with fixing pins 19, the outer walls of the two baffles 18 are provided with jacks that cooperate with the fixing pins 19, and the outer walls of the two fixing pins 19 are fixedly installed with shift blocks 20. The inner walls of the two shift blocks 20 are connected to the outer wall of the connecting frame 15 on the same side through a fixing mechanism. The fixing mechanism includes a fixing spring 21 installed on the outer wall of the fixing pin 19, and the two ends of the fixing spring 21 are elastically connected to the outer wall of the connecting frame 15 and the inner wall of the shift block 20 respectively.

[0026] When the present invention is in use, the rotating block 11 can be pulled by the cooperation of the handle 12, thereby the rotating block 11 can drive the lower pressure rod 6 to move upward through the connecting plate 9, and squeeze the lower pressure spring 10 during the movement, thereby making the lower pressure rod 6 drive the lower pressure plate 7 to move upward and away from the prismatic sleeve 5. At this time, the rotating block 11 can be rotated to make the rotating block 11 drive the clamping block 13 to rotate, and make the clamping groove be stuck in the upper end surface of the support plate 14, thereby limiting the rotating block 11, thereby limiting the lower pressure rod 6, preventing the lower pressure plate 7 from moving up and down at will, and avoiding affecting the normal movement of the trolley, and then the carrying plate 1 can be moved by the cooperation of the two rotating shafts 3 and the multiple wheels 4;

[0027] When the trolley is braked, the handle 12 can be used to drive the rotating block 11 to move, and the slot can be moved out of the upper end surface of the support plate 14. At this time, under the elastic action of the downward pressure spring 10, the downward pressure rod 6 can drive the lower pressure plate 7 to move downward, and the lower pressure plate 7 can drive the anti-slip pad 8 to fit the outer wall of the prismatic sleeve 5, thereby squeezing the prismatic sleeve 5 to achieve a limiting effect on one of the rotating shafts 3, thereby achieving effective braking of the trolley. When the trolley is carrying items, the baffle 18 can be rotated by the cooperation of the connecting shaft 16 and the connecting block 17, so that the baffle 18 is in a vertical upright state, and the fixing spring 21 then drives the fixing pin 19 to move into the insertion hole, thereby fixing the baffle 18. Through the cooperation of the two vertically upright baffles 18, the items can be prevented from sliding from both sides of the carrying plate 1.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A trolley automatic brake device, comprising a carrier plate (1), characterized in that: The bottom wall of the carrier plate (1) is fixedly mounted with a plurality of connecting blocks (2); a rotating shaft (3) is rotatably installed between two connecting blocks (2) on the same side; wheels (4) are fixedly installed on the outer walls of both ends of the two rotating shafts (3); a prismatic sleeve (5) is fixedly installed on the outer wall of one of the rotating shafts (3); a lower pressure rod (6) is slidably installed on the upper end surface of the carrier plate (1); a lower pressure plate (7) is fixedly installed on the end of the lower pressure rod (6); a connecting plate (9) is fixedly installed on the outer wall of the lower pressure rod (6); a lower pressure spring (10) is installed on the outer wall of the lower pressure rod (6); and both ends of the lower pressure spring (10) are elastically connected to the upper end surface of the carrier plate (1) and the bottom wall of the connecting plate (9) respectively. The connecting plate (9) is connected, and a rotating block (11) is rotatably installed on the upper end surface. The outer walls of both sides of the carrying plate (1) are fixedly installed with connecting frames (15). The interiors of the two connecting frames (15) are rotatably installed with connecting blocks (17) through a connecting mechanism. The ends of the two connecting blocks (17) are fixedly installed with baffles (18). The outer walls of the two connecting frames (15) are slidably penetrated by fixing pins (19). The outer walls of the two baffles (18) are provided with jacks that cooperate with the fixing pins (19). The outer walls of the two fixing pins (19) are fixedly installed with shifting blocks (20). The inner walls of the two shifting blocks (20) are connected to the outer wall of the connecting frame (15) on the same side through a fixing mechanism.

2. The automatic braking device for a trolley according to claim 1, characterized in that: The connection mechanism comprises a connection shaft (16) fixedly mounted inside the connection frame (15), and the connection block (17) is rotatably mounted on the outer wall of the connection shaft (16).

3. The automatic braking device for a trolley according to claim 2, characterized in that: The fixing mechanism comprises a fixing spring (21) mounted on the outer wall of the fixing pin (19), and two ends of the fixing spring (21) are elastically connected to the outer wall of the connecting frame (15) and the inner wall of the shifting block (20) respectively.

4. The automatic braking device for a trolley according to claim 3, characterized in that: An anti-skid pad (8) is fixedly installed on the inner wall of the lower pressing plate (7), and the anti-skid pad (8) is made of rubber.

5. The automatic braking device for a trolley according to claim 4, characterized in that: A handle (12) is fixedly mounted on the upper end surface of the rotating block (11), and a clamping block (13) is fixedly mounted on the outer wall of the rotating block (11).

6. The automatic braking device for a trolley according to claim 5, characterized in that: A support plate (14) is fixedly mounted on the upper end surface of the carrier plate (1), and a bottom wall of the clamping block (13) is provided with a clamping slot that cooperates with the support plate (14).

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