A hydraulic jack with a lockable top plate and a safety device

Abstract

The present invention proposes a hydraulic jack with a safety device and a lockable top plate, comprising a jack body, a top plate block installed on the driving end of the jack body, a plurality of circumferentially arranged connecting blocks installed on the jack body, a positioning frame connected to the top plate block slidably inserted on the connecting block, and a first locking piece for locking the positioning frame is provided on the connecting block; a base is installed on the end of the jack body away from the top plate block, a plurality of fixed tubes are installed on the base, and the plurality of fixed tubes are respectively connected to the plurality of connecting blocks, a lifting piece connected to the top plate block is provided on the fixed tube, and a second locking piece for locking the lifting piece is provided on the fixed tube. The present invention proposes a hydraulic jack with a safety device and a lockable top plate, which solves the risk of the top plate falling off easily when the jack fails, and ensures people's safety.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic jacks, and in particular to a hydraulic jack with a lockable top plate and a safety device. Background Art

[0002] Hydraulic jack, also known as oil jack, is a jack that uses a plunger or hydraulic cylinder as a rigid lifting piece. It is generally only equipped with a lifting mechanism to lift heavy objects. It has a simple structure, light weight, and is easy to carry and move. Hydraulic jacks are divided into general and special types. General hydraulic jacks are suitable for various lifting operations with low lifting heights.

[0003] The existing hydraulic jacks have certain drawbacks when in use. If the jack fails, it is easy to cause the top plate to fall, and there are certain risks in safety performance, and people's safety cannot be guaranteed. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a hydraulic jack with a safety device with a lockable top plate.

[0005] The hydraulic jack with a safety device and a lockable top plate provided by the present invention comprises a jack body, a top plate block is installed on the driving end of the jack body, a plurality of circumferentially arranged connecting blocks are installed on the jack body, a positioning frame connected to the top plate block is slidably inserted on the connecting block, and a first locking member for locking the positioning frame is provided on the connecting block;

[0006] A base is installed at one end of the jack body away from the top plate block, and a plurality of fixing tubes are installed on the base. The plurality of fixing tubes are respectively connected to a plurality of connecting blocks. A lifting member connected to the top plate block is provided on the fixing tube, and a second locking member for locking the lifting member is provided on the fixing tube.

[0007] Preferably, a sliding cavity is provided in the fixed tube, the lifting member includes a lifting rod slidably inserted in the sliding cavity, a latch is passed through the lifting rod, a socket matched with the latch is provided on the top plate block, and the latch is inserted into the socket.

[0008] Preferably, the second locking member comprises a first bolt threadedly connected to the fixing tube, a plurality of threaded holes matching the first bolt are formed on the lifting rod, and the first bolt is threadedly connected to one of the threaded holes.

[0009] Preferably, the first locking member comprises a second bolt threadedly connected to the connecting block, and the second bolt is pressed against the positioning frame.

[0010] Preferably, a plurality of load-bearing blocks are provided on a side of the base away from the jack body, and the load-bearing blocks are connected to the base via elastic buffers.

[0011] Preferably, the elastic buffer comprises a fixed rod mounted on the load-bearing block, one end of the fixed rod slides through the base, a first spring mounted on the fixed rod is mounted on the load-bearing block, and the end of the first spring away from the load-bearing block is connected to the base, an end block is mounted on the end of the fixed rod away from the load-bearing block, a second spring mounted on the fixed rod is mounted on the end block, and the end of the second spring away from the end block is connected to the base.

[0012] Preferably, a plurality of anti-slip strips are installed on the top plate block.

[0013] Preferably, the top plate block and the base are both cross-shaped structures.

[0014] The hydraulic jack with a lockable top plate and a safety device proposed by the present invention has the following beneficial effects:

[0015] By providing the positioning frame and the first locking piece, when using the jack, the first locking piece of the positioning frame on the locking connection block can be first released. When the jack body is working, the driving end of the jack body drives the top plate block to rise upward, thereby lifting the object. When the top plate block is rising, the positioning frame connected to the top plate block also slides on the connecting block. When the object is lifted to a certain position, the position of the positioning frame on the connecting block can be fixed by the first locking piece, thereby limiting the top plate block. When the jack body fails, the structure can limit the top plate block to prevent the top plate block from falling suddenly, thereby ensuring people's safety to a certain extent.

[0016] By using the provided lifting member and the second locking member, the second locking member that locks the lifting member on the fixed tube is first loosened, and when the top plate block is lifted, the lifting member on the fixed tube can be driven to lift at the same time. After the object is lifted to a certain position, the position of the lifting member on the fixed tube can be fixed by the second locking member, thereby further limiting the position of the top plate block. The cooperation of this structure and the positioning frame can improve the effect of limiting the top plate block and reduce the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the overall structure of a hydraulic jack with a lockable top plate and a safety device.

[0018] Figure 2 The present invention is a partial structural schematic diagram of a hydraulic jack with a lockable top plate and a safety device.

[0019] Figure 3 For the present invention Figure 1 A is an enlarged view of the middle image.

[0020] Figure 4 For the present invention Figure 2 Enlarged view of B. DETAILED DESCRIPTION

[0021] Reference Figure 1-Figure 4 The present invention proposes a hydraulic jack with a safety device and a lockable top plate, comprising a jack body 1, a top plate block 2 is installed on the driving end of the jack body 1, a plurality of circumferentially arranged connecting blocks 3 are installed on the jack body 1, a positioning frame 4 connected to the top plate block 2 is slidably inserted on the connecting block 3, and a first locking member for locking the positioning frame 4 is provided on the connecting block 3.

[0022] In this embodiment, the first locking member includes a second bolt 9 threadedly connected to the connecting block 3 , and the second bolt 9 is pressed against the positioning frame 4 .

[0023] In order to ensure the safety of use, by setting the positioning frame 4 and the first locking piece, when using the jack, the second bolt 9 that locks the positioning frame 4 can be loosened first. When the jack body 1 is working, the driving end of the jack body 1 drives the top plate block 2 to rise upward, thereby lifting the object. When the top plate block 2 is rising, the positioning frame 4 connected to the top plate block 2 also slides on the connecting block 3. When the object is lifted to a certain position, the position of the positioning frame 4 on the connecting block 3 can be fixed by the second bolt 9, thereby limiting the top plate block 2. When the jack body 1 fails, this structure can be used to limit the top plate block 2 to prevent the top plate block 2 from falling suddenly, thereby ensuring people's safety to a certain extent.

[0024] In this embodiment, a base 5 is installed at one end of the jack body 1 away from the top plate block 2, a plurality of fixed tubes 6 are installed on the base 5, and the plurality of fixed tubes 6 are respectively connected to the plurality of connection blocks 3, a lifting member 7 connected to the top plate block 2 is provided on the fixed tube 6, and a second locking member for locking the lifting member 7 is provided on the fixed tube 6. A sliding cavity is provided in the fixed tube 6, and the lifting member 7 includes a lifting rod 71 slidably inserted in the sliding cavity, a latch 72 is inserted on the lifting rod 71, a socket matching the latch 72 is provided on the top plate block 2, and the latch 72 is inserted in the socket. The second locking member includes a first bolt 8 threadedly connected to the fixed tube 6, a plurality of threaded holes matching the first bolt 8 are provided on the lifting rod 71, and the first bolt 8 is threadedly connected to one of the threaded holes.

[0025] In order to further ensure the safety of use, the lifting member 7 and the second locking member are set, and the first bolt 8 that locks the lifting rod 71 is first loosened. When the top plate block 2 is raised, the lifting rod 71 on the fixed tube 6 can be driven to rise at the same time. After the object is lifted to a certain position, the position of the lifting rod 71 on the fixed tube 6 can be fixed by the first bolt 8, thereby further limiting the position of the top plate block 2. The cooperation of this structure and the positioning frame 4 can improve the effect of limiting the top plate block 2 and reduce the risk of accidents.

[0026] In a further embodiment, a plurality of bearing blocks 10 are provided on a side of the base 5 away from the jack body 1, and the bearing blocks 10 are connected to the base 5 via an elastic buffer 11. The elastic buffer 11 includes a fixing rod 111 installed on the bearing block 10, one end of the fixing rod 111 slides through the base 5, a first spring 112 sleeved on the fixing rod 111 is installed on the bearing block 10, and one end of the first spring 112 away from the bearing block 10 is connected to the base 5, an end of the fixing rod 111 away from the bearing block 10 is installed with an end block 113, a second spring 114 sleeved on the fixing rod 111 is installed on the end block 113, and one end of the second spring 114 away from the end block 113 is connected to the base 5.

[0027] In order to ensure the stability of the jack body 1 when it is used to lift a heavy object, the load-bearing block 10 and the elastic buffer 11 are provided. Therefore, when the jack body 1 is used to lift a heavy object, the base 5 slides on the fixing rod 111, the first spring 112 is squeezed, and the second spring 114 is stretched, thereby increasing the stability of the jack body 1 when it is used. Since a plurality of load-bearing blocks 10 are provided, the bottom of the jack body 1 can be subjected to force at multiple points to prevent the force from being concentrated at one point, effectively avoiding the occurrence of depression, and increasing the force-bearing area of ​​the jack body 1, further improving the stability of the jack body 1 when it is used.

[0028] In a specific embodiment, a plurality of anti-skid strips 12 are installed on the top plate block 2. The anti-skid strips 12 arranged on the top plate block 2 can increase the friction between the top plate block 2 and the object, so that the jack body 1 can lift the heavy object better.

[0029] In a specific embodiment, the top plate block 2 and the base 5 are both cross-shaped structures; the top plate block 2 and the base 5 are designed as a cross structure, which can increase the force-bearing area and improve the stability of use.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic jack with a lockable top plate and a safety device. It is characterized in that The jack body (1) comprises a jack body (1), a driving end of the jack body (1) is provided with a top plate block (2), a plurality of circumferentially arranged connecting blocks (3) are provided on the jack body (1), a positioning frame (4) connected to the top plate block (2) is slidably plugged on the connecting block (3), and a first locking member for locking the positioning frame (4) is provided on the connecting block (3); A base (5) is installed at one end of the jack body (1) away from the top plate block (2), a plurality of fixing pipes (6) are installed on the base (5), and the plurality of fixing pipes (6) are respectively connected to a plurality of connecting blocks (3), a lifting member (7) connected to the top plate block (2) is provided on the fixing pipe (6), and a second locking member for locking the lifting member (7) is provided on the fixing pipe (6); The fixed tube (6) is provided with a sliding cavity, the lifting member (7) comprises a lifting rod (71) slidably inserted in the sliding cavity, a plug (72) is inserted into the lifting rod (71), a plug hole matching the plug (72) is provided on the top plate block (2), and the plug (72) is inserted into the plug hole; The second locking member comprises a first bolt (8) threadedly connected to the fixing tube (6), the lifting rod (71) is provided with a plurality of threaded holes matched with the first bolt (8), and the first bolt (8) is threadedly connected to one of the threaded holes; The first locking member comprises a second bolt (9) threadedly connected to the connecting block (3), and the second bolt (9) is pressed tightly against the positioning frame (4); A plurality of anti-slip strips (12) are installed on the top plate block (2); The top plate block (2) and the base (5) are both cross-shaped structures.

2. A hydraulic jack with a lockable top plate and a safety device according to claim 1, Features: A plurality of load-bearing blocks (10) are provided on a side of the base (5) away from the jack body (1), and the load-bearing blocks (10) are connected to the base (5) via elastic buffer components (11).

3. A hydraulic jack with a lockable top plate and a safety device according to claim 2, Features: The elastic buffer (11) comprises a fixing rod (111) mounted on the load-bearing block (10), one end of the fixing rod (111) slidingly passes through the base (5), a first spring (112) mounted on the fixing rod (111) is mounted on the load-bearing block (10), and one end of the first spring (112) away from the load-bearing block (10) is connected to the base (5), an end of the fixing rod (111) away from the load-bearing block (10) is mounted with an end block (113), a second spring (114) mounted on the fixing rod (111) is mounted on the end block (113), and one end of the second spring (114) away from the end block (113) is connected to the base (5).

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