Locking device for lifting machine

Abstract

The utility model discloses a locking device for a lifting machine. The locking device comprises a bottom plate, a fixing plate, a connecting plate, a lifting structure, a lifting block, a first locking structure, a second locking structure and a third locking structure. The two bottom plates are symmetrically arranged, the fixing plates are fixedly connected to the tops of the bottom plates, the connecting plates are fixedly connected to the opposite sides of the bottom plates, the lifting structures are arranged on the opposite sides of the fixing plates, the lifting blocks are arranged on the lifting structures, the first locking structures are arranged on the fixing plates, and the second locking structures are arranged on the opposite sides of the lifting blocks. Third locking structures are arranged at the front and rear ends of the top of the lifting block. Compared with the prior art, the one-way locking device has the advantages that one-way locking and fixing can be carried out when the lifting block ascends, it is guaranteed that an elevator has enough guarantee even in the ascending process, multiple locking can be carried out on the lifting block when the lifting block moves to the proper height, and the using safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifts, in particular to a locking device for lifts. Background Art

[0002] A car lift refers to an automobile maintenance equipment used to lift cars in the automobile repair industry. The lift plays a vital role in automobile repair and maintenance. Whether it is a major overhaul of the entire vehicle or a minor repair and maintenance, it is indispensable. In repair and maintenance companies of various sizes, whether it is a comprehensive repair shop that repairs a variety of models, or a street shop with a single business scope, almost all are equipped with a lift.

[0003] The patent document with announcement number CN215798178U discloses a locking device for a lift, comprising two bottom plates, a fixed plate fixedly connected to the upper surface of the bottom plate, a motor fixedly connected to the top of the fixed plate, a first slide groove provided on one side of the fixed plate, a first screw movably connected in the first slide groove, and one end of the motor output shaft passes through the fixed plate and is fixed to the first screw, a slider movably connected to one side of the first screw, and the slider is slidably connected to the first slide groove, a fixed seat is movably connected to both sides of the slider, and a second slide groove is provided inside the fixed plate. The utility model can not only further firmly fix the position of the fixed seat through the coordinated use of the electromagnetic plate and the electromagnetic block, thereby improving the stability of the device, but also can adjust the height of the fixed seat through the first screw, thereby improving the flexibility of the device, and can also adjust the angle between the two fixed seats through the second screw, thereby improving the convenience of the device, but the prior art still has defects:

[0004] (1) The locking structure used in the prior art devices is to lock the limit position to prevent falling only after the upward movement stops. However, there is no guarantee during the upward movement, thus posing certain safety hazards.

[0005] (2) The device of the prior art adopts an electromagnetic plate and an electromagnetic block driven locking and unlocking method, which has a complex structure. When in use, operating failures often occur and the stability is poor. At the same time, the locking structure is also prone to failure due to power outages. Due to the lack of locking of the locking structure, the lift is prone to sliding down under pressure, which is prone to safety accidents and has a low safety factor. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide a locking device for a lift.

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a locking device for a lift, comprising:

[0008] A bottom plate, wherein the bottom plates are two and symmetrically arranged;

[0009] A fixing plate, the fixing plate is fixedly connected to the top of the bottom plate, and a rectangular groove is formed on one side opposite to the fixing plate;

[0010] A connecting plate, the connecting plate being fixedly connected to a side opposite to the bottom plate;

[0011] A lifting structure, wherein the lifting structure is arranged on a side opposite to the fixed plate;

[0012] A lifting block, wherein the lifting block is arranged on the lifting structure;

[0013] A locking structure 1, wherein the locking structure 1 is arranged on the fixing plate;

[0014] A locking structure 2, wherein the locking structure 2 is arranged on the side opposite to the lifting block, and the locking structure 2 includes a plurality of oblique grooves provided on the opposite side of the inner wall of the rectangular groove, and the plurality of oblique grooves are linearly and evenly distributed. The lifting block is provided with three mounting grooves on the side close to the oblique groove, and a card block is slidably connected in the mounting groove, and the card block is used in conjunction with the oblique groove. A cavity is provided inside the card block, and a baffle is slidably connected in the cavity. An electric telescopic rod 2 is fixedly installed on the inner wall of the mounting groove away from the oblique groove, and the output end of the electric telescopic rod 2 is inserted into the cavity and the end is fixedly connected to the baffle, and a spring is fixedly connected between the baffle and the inner wall of the mounting groove;

[0015] A locking structure three is provided at the front and rear ends of the top of the lifting block, and the locking structure three includes a rack plate fixedly connected to the front and rear ends of the inner wall of the rectangular groove, a connecting block is fixedly installed on the top of the lifting block, and the front and rear ends of the top of the connecting block are fixedly connected to an electric telescopic rod three, and the output end of the electric telescopic rod three is fixedly connected to a locking tooth plate, and the locking tooth plate is meshingly connected to the rack plate.

[0016] Furthermore, the lifting structure comprises:

[0017] A screw rod, the screw rod being rotatably connected to the top and bottom of the inner wall of the rectangular groove;

[0018] A motor, wherein the motor is fixedly mounted on the top of the fixing plate, and the output end of the motor is fixedly connected to the top end of the screw;

[0019] A limiting rod is fixedly connected to the front and rear ends of the top and bottom of the inner wall of the rectangular groove.

[0020] Furthermore, the lifting block is threadedly connected to the screw rod, and a supporting device is provided on the opposite side of the lifting block.

[0021] Furthermore, the locking structure 1 comprises:

[0022] A groove, wherein the groove is formed at the front and rear ends of the inner wall of the rectangular groove;

[0023] An electromagnetic plate, wherein the electromagnetic plate is slidably connected in the groove;

[0024] An electric telescopic rod 1, wherein the electric telescopic rod 1 is fixedly mounted at the front and rear ends of the opposite side of the fixed plate, the output end of the electric telescopic rod 1 extends into the groove and the end is fixedly connected to the electromagnetic plate;

[0025] The electromagnetic block is fixedly mounted on the front and rear ends of the lifting block close to the groove.

[0026] Furthermore, fixing ribs are fixedly connected between the front and rear ends of the bottom of the fixing plate and the bottom plate, and fixing ears are fixedly connected to the front and rear ends of the bottom plate.

[0027] Furthermore, a control panel is fixedly mounted on the side of the fixing plate on the right side of the connecting plate.

[0028] The advantages of the utility model compared with the prior art are:

[0029] (1) In the present invention, by setting the locking structure 2, when the lifting block is lifted, the lifting block moves upward relative to the fixed plate. At this time, the card block contacts the inclined surface of the inclined groove, which can make the card block shrink in the cavity and will not be locked. When the lifting block is to be lowered, the card block is locked with the inclined groove, which can prevent the lifting block from moving downward, thereby effectively preventing the lifting block and the object thereon from suddenly falling under the action of pressure due to power failure or failure of the electromagnetic plate and the electromagnetic block, thereby causing a safety accident. When the lifting block needs to be lowered, the electric telescopic rod 2 is started, and the electric telescopic rod 2 drives the card block to move toward the middle, thereby pulling the card block to move toward the middle and away from the inclined groove, thereby making the lifting block move downward on the screw rod and the limit rod, thereby making the lifting block lower. When the lifting block rises one level, the spring will pop out the card block, thereby performing one-way locking and fixing, ensuring that the elevator has sufficient protection even during the lifting process, thereby improving the safety of the device.

[0030] (2) In the utility model, by setting the locking structure three, when the lifting block moves to a suitable height to support the object, the electric telescopic rod is started to extend three times to drive the locking tooth plate to move, so that the locking tooth plate and the rack plate are engaged, and the lifting block is locked and fixed three times. Through multiple locking, the electromagnetic plate and the electromagnetic block are prevented from operating failures or power failures that cause the locking structure to fail, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The utility model is a three-dimensional locking device for a lifting machine Figure 1 .

[0032] Figure 2 The utility model is a three-dimensional locking device for a lifting machine Figure 2 .

[0033] Figure 3 The utility model is a front sectional view of a locking device for a lift.

[0034] Figure 4 The utility model is a side sectional view of a locking device for a lift.

[0035] Figure 5 The utility model is a structural schematic diagram of a lifting block of a locking device for a lift.

[0036] Figure 6 It is a structural schematic diagram of A of a locking device for a lift according to the utility model.

[0037] Markings in the figure: 1. bottom plate; 2. fixing plate; 21. rectangular groove; 3. connecting plate; 4. lifting structure; 41. screw; 42. motor; 43. limit rod; 5. lifting block; 6. locking structure one; 61. groove; 62. electromagnetic plate; 63. electric telescopic rod one; 64. electromagnetic block; 7. locking structure two; 71. inclined groove; 72. mounting groove; 73. block; 74. cavity; 75. baffle; 76. electric telescopic rod two; 77. spring; 8. locking structure three; 81. rack plate; 82. electric telescopic rod three; 83. locking tooth plate; 9. supporting device; 10. fixing rib; 11. fixing ear; 12. control panel. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0039] 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. 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.

[0040] like Figures 1 to 6As shown, the present embodiment proposes a locking device for a lift, comprising a base plate 1, which has two base plates 1 and is symmetrically arranged, a fixing plate 2 is fixedly connected to the top of the base plate 1, a rectangular groove 21 is opened on the opposite side of the fixing plate 2, a connecting plate 3 is fixedly connected to the opposite side of the base plate 1, a lifting structure 4 is provided on the opposite side of the fixing plate 2, a lifting block 5 is provided on the lifting structure 4, the lifting structure 4 comprises a screw rod 41 rotatably connected to the top and bottom of the inner wall of the rectangular groove 21, a motor 42 is fixedly installed on the top of the fixing plate 2, the output end of the motor 42 is fixedly connected to the top of the screw rod 41, the front and rear ends of the top and bottom of the inner wall of the rectangular groove 21 are fixedly connected to the limiting rod 43, the lifting block 5 is threadedly connected to the screw rod 22, a supporting device 9 is provided on the opposite side of the lifting block 5, the supporting device 9 is an existing technology in the existing patent, by starting the motor 42 to drive the screw rod 41 to rotate, so that the lifting block 5 moves up and down to a suitable height, and then the supporting device 9 supports the object.

[0041] A locking structure 6 is provided on the fixed plate 2, and the locking structure 6 includes grooves 61 opened at the front and rear ends of the inner wall of the rectangular groove 41, and an electromagnetic plate 62 is slidably connected in the groove 61. An electric telescopic rod 63 is fixedly installed at the front and rear ends of the opposite side of the fixed plate 2, and the output end of the electric telescopic rod 63 extends into the groove 61 and the end is fixedly connected to the electromagnetic plate 62. Electromagnetic blocks 64 are fixedly installed at the front and rear ends of the lifting block 5 close to the groove 61. The electric telescopic rod 63 is extended to move the electromagnetic plate 62 to a suitable position to contact the electromagnetic block 64, so that the electromagnetic plate 62 and the electromagnetic block 64 are energized and firmly attracted together, thereby making the position of the lifting block 5 firmly fixed, which plays a role of one-time locking.

[0042] A locking structure 2 7 is provided on the opposite side of the lifting block 5. The locking structure 2 7 includes a plurality of inclined grooves 71 provided on the opposite side of the inner wall of the rectangular groove 21. The plurality of inclined grooves 71 are linearly and evenly distributed. Three mounting grooves 72 are provided on the side of the lifting block 5 close to the inclined groove 71. A card block 73 is slidably connected in the mounting groove 72. The card block 73 is used in conjunction with the inclined groove 71. A cavity 74 is provided inside the card block 73. A baffle 75 is slidably connected in the cavity 74. An electric telescopic rod 2 76 is fixedly installed on the inner wall of the mounting groove 72 away from the inclined groove 71. The output end of the electric telescopic rod 2 76 is inserted into the cavity 74 and the end is fixedly connected to the baffle 75. A spring 77 is fixedly connected between the baffle 75 and the inner wall of the mounting groove 72. When lifting, the lifting block 5 moves upward relative to the fixed plate 2. At this time, the card block 73 contacts the inclined surface of the inclined groove 71, which can make the card block 73 When the lifting block 5 is lowered, the card block 73 is engaged with the inclined slot 71 to prevent the lifting block 5 from moving downward. Therefore, it can effectively prevent the lifting block 5 and the objects thereon from suddenly falling under pressure due to power failure or failure of the electromagnetic plate and the electromagnetic block, thereby causing a safety accident. When the lifting block 5 needs to be lowered, at this time, the electric telescopic rod 2 76 is started, and the electric telescopic rod 2 76 drives the card block 73 to move toward the middle, thereby pulling the card block 73 to move toward the middle and away from the inclined slot 71, so that the lifting block 5 can move downward on the screw 41 and the limit rod 43, so that the lifting block 5 can be lowered, so that the spring 77 will pop out the card block 73 every time the lifting block 5 rises one level, thereby performing one-way locking and fixing, playing a secondary locking role, and ensuring that the elevator has sufficient protection even during the lifting process.

[0043] The front and rear ends of the top of the lifting block 5 are provided with locking structures 3 8, and the locking structure 3 8 includes a rack plate 81 fixedly connected to the front and rear ends of the inner wall of the rectangular groove 21. A connecting block is fixedly installed on the top of the lifting block 5, and the front and rear ends of the top of the connecting block are fixedly connected to electric telescopic rods 3 82. The output end of the electric telescopic rod 3 82 is fixedly connected to a locking tooth plate 83, and the locking tooth plate 83 is meshed and connected to the rack plate 81. When the lifting block 5 moves to a suitable height to support an object, the electric telescopic rod 3 82 is started to extend and drive the locking tooth plate 83 to move, so that the locking tooth plate 83 is meshed with the rack plate 81, and the lifting block 5 is locked and fixed three times.

[0044] The front and rear ends of the bottom of the fixed plate 2 are fixedly connected to the bottom plate 1 with fixing ribs 10, the front and rear ends of the bottom plate 1 are fixedly connected with fixing ears 11, and a control panel 12 is fixedly installed on the side of the fixed plate 2 on the right side of the connecting plate 3. The control panel 12 controls the opening and closing of the motor 42, the electromagnetic plate 62, the electric telescopic rod 1 63, the electromagnetic block 64, the electric telescopic rod 2 76 and the electric telescopic rod 3 82.

[0045] When the utility model is implemented, the motor 42 is first started to drive the screw 41 to rotate, so that the lifting block 5 moves up and down to a suitable height so that the supporting device 9 supports the object, and then the electric telescopic rod 63 is started to drive the electromagnetic plate 62 to move and contact the electromagnetic block 64, and then the electromagnetic plate 62 and the electromagnetic block 64 are energized and firmly attracted together, so that the position of the lifting block 5 is firmly fixed, which plays a one-time locking role. During the lifting process of the lifting block 5, the block 73 contacts the inclined surface of the inclined groove 71, so that the block 73 can shrink in the cavity 74 without being engaged. When the lifting block 5 is to be lowered, the block 73 and the electromagnetic block 64 are electrically connected. The engagement of the inclined groove 71 can prevent the lifting block 5 from moving downward, and play a secondary locking role. When the lifting block 5 moves to a suitable height to support the object, the electric telescopic rod 3 82 is started to extend to drive the locking tooth plate 83 to move, so that the locking tooth plate 83 is engaged with the rack plate 81, and the lifting block 5 is locked and fixed three times. Through multiple locking, it can effectively prevent the lifting block 5 and the object thereon from suddenly falling under pressure due to power failure or failure of the electromagnetic plate and the electromagnetic block, causing a safety accident, avoid the electromagnetic plate and the electromagnetic block from operating failure or power failure causing the locking structure to fail, thereby improving the safety of the device.

[0046] When the lifting block 5 needs to be lowered, the electric telescopic rod 2 76 is started, and the electric telescopic rod 2 76 drives the block 73 to move toward the middle, thereby pulling the block 73 to move toward the middle and away from the inclined groove 71, so that the lifting block 5 can move downward on the screw rod 41 and the limit rod 43, so that the lifting block 5 can be lowered, so that the spring 77 will pop out the block 73 every time the lifting block 5 rises one level, thereby performing one-way locking and fixing, ensuring that the elevator has sufficient protection even in the process of rising, thereby improving the practicality of the device.

[0047] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking device for a lift, characterized in that: include: A bottom plate (1), wherein two bottom plates (1) are provided and are symmetrically arranged; A fixing plate (2), the fixing plate (2) being fixedly connected to the top of the bottom plate (1), and a rectangular groove (21) being formed on an opposite side of the fixing plate (2); A connecting plate (3), the connecting plate (3) being fixedly connected to a side opposite to the bottom plate (1); A lifting structure (4), wherein the lifting structure (4) is arranged on a side opposite to the fixed plate (2); A lifting block (5), wherein the lifting block (5) is arranged on the lifting structure (4); A locking structure (6), wherein the locking structure (6) is arranged on the fixing plate (2); The second locking structure (7) is arranged on the opposite side of the lifting block (5), and the second locking structure (7) comprises a plurality of inclined grooves (71) provided on the inner wall of the rectangular groove (21) on the opposite side, and the plurality of inclined grooves (71) are linearly and evenly distributed, and the lifting block (5) is provided with three installation grooves (72) on the side close to the inclined grooves (71), and a clamping block (73) is slidably connected in the installation groove (72), and the clamping block (73) is slidably connected to the inclined groove (71). ), the block (73) is provided with a cavity (74) inside, a baffle (75) is slidably connected inside the cavity (74), an electric telescopic rod (76) is fixedly installed on the inner wall of the mounting groove (72) away from the inclined groove (71), the output end of the electric telescopic rod (76) is inserted into the cavity (74) and the end is fixedly connected to the baffle (75), and a spring (77) is fixedly connected between the baffle (75) and the inner wall of the mounting groove (72); A locking structure three (8), wherein the locking structure three (8) is arranged at the front and rear ends of the top of the lifting block (5), and the locking structure three (8) comprises a rack plate (81) fixedly connected to the front and rear ends of the inner wall of the rectangular groove (21); a connecting block is fixedly installed on the top of the lifting block (5), and the front and rear ends of the top of the connecting block are fixedly connected to an electric telescopic rod three (82); the output end of the electric telescopic rod three (82) is fixedly connected to a locking tooth plate (83), and the locking tooth plate (83) is meshingly connected to the rack plate (81).

2. A locking device for a lift according to claim 1, characterized in that: The lifting structure (4) comprises: A screw rod (41), the screw rod (41) being rotatably connected to the top and bottom of the inner wall of the rectangular groove (21); A motor (42), the motor (42) being fixedly mounted on the top of the fixing plate (2), and the output end of the motor (42) being fixedly connected to the top end of the screw rod (41); A limiting rod (43) is fixedly connected to the front and rear ends of the top and bottom of the inner wall of the rectangular groove (21).

3. A locking device for a lift according to claim 2, characterized in that: The lifting block (5) is threadedly connected to the screw rod (41), and a supporting device (9) is provided on the opposite side of the lifting block (5).

4. A locking device for a lift according to claim 2, characterized in that: The locking structure 1 (6) comprises: A groove (61), wherein the groove (61) is formed at the front and rear ends of the inner wall of the rectangular groove (21); An electromagnetic plate (62), wherein the electromagnetic plate (62) is slidably connected in the groove (61); An electric telescopic rod (63), the electric telescopic rod (63) being fixedly mounted at the front and rear ends of the opposite side of the fixed plate (2), the output end of the electric telescopic rod (63) extending into the groove (61) and the end portion being fixedly connected to the electromagnetic plate (62); An electromagnetic block (64) is fixedly mounted on the front and rear ends of the lifting block (5) on a side close to the groove (61).

5. The locking device for a lift according to claim 1, characterized in that: A fixing rib (10) is fixedly connected between the front and rear ends of the bottom of the fixing plate (2) and the bottom plate (1), and a fixing ear (11) is fixedly connected to the front and rear ends of the bottom of the bottom plate (1).

6. A locking device for a lift according to claim 1, characterized in that: A control panel (12) is fixedly mounted on the side of the fixing plate (2) on the right side of the connecting plate (3).

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