Hydraulic lifting machine for lifting equipment

Abstract

The hydraulic lifting machine comprises a base and a platform support, a sliding groove is formed in the upper end face of the base, a movable seat is installed on the lower end face of the platform support, the movable seat slides on the inner side of the sliding groove through a hydraulic rod, the top end of the platform support is connected with a lifting machine table top, and the lifting machine table top is connected with a hydraulic cylinder. A movable cavity is formed below one side of the sliding groove, a connecting plate is arranged in front of the inner side of the movable cavity, a fixing plate is installed behind the connecting plate, the fixing plate and the movable cavity move relatively through a clamping mechanism, the clamping mechanism comprises a plurality of sawteeth and a shell, and the inner side of the shell is movably connected with a clamping block through a second spring. A transverse groove is formed in the front end face of the base, and an outer sleeve rod is arranged on the inner side of the transverse groove. The lifting machine table top can be prevented from suddenly descending without additionally and independently installing a set of circuit or execution element, and the cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic lifts, in particular to a hydraulic lift used for lifting equipment. Background Art

[0002] Scissor lifts are used in the automotive repair industry. They rely on a hydraulic system to raise and lower the platform, and are also called hydraulic lifts. They play a vital role in vehicle repair and maintenance, and are essential for vehicle overhauls and repairs. For safety reasons, scissor lifts are equipped with protective devices to prevent the raised platform from suddenly dropping, potentially causing injury to the operator. A common solution is to use an anti-drop locking mechanism.

[0003] However, the existing commonly used locking mechanism is a set of ratchet structures: locking is achieved by two sets of mutually meshing rack-like structures to prevent descending. When unlocking, it is necessary to use an actuator such as a cylinder or an oil cylinder to separate the two meshing racks, causing the locking mechanism to fail and the platform to descend. The existing locking mechanism requires a separate set of circuits and actuators to be installed, which not only increases the cost but also increases the failure rate of the equipment; therefore, it does not meet the existing needs. In this regard, we have proposed a hydraulic lift for lifting equipment. Utility Model Content

[0004] The purpose of the present utility model is to provide a hydraulic lift for equipment lifting, so as to solve the problem proposed in the above background technology that the existing commonly used locking mechanism is a group of ratchet structures: locking is achieved by two groups of mutually engaged rack-like structures to prevent falling. When unlocking, it is necessary to use an actuator such as a cylinder or an oil cylinder to separate the two engaged racks, the locking mechanism fails, and the platform is lowered. The existing locking mechanism requires a separate set of circuits and actuators to be installed, which not only increases the cost, but also increases the failure rate of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic lift for equipment lifting, comprising a base and a platform bracket, the upper end surface of the base is provided with a slide groove, the lower end surface of the platform bracket is provided with a movable seat, the movable seat slides inside the slide groove through a hydraulic rod, the top of the platform bracket is connected to the lifting machine table, a movable cavity is provided below one side of the slide groove, a connecting plate is provided in front of the inner side of the movable cavity, a fixed plate is installed behind the connecting plate, the fixed plate and the movable cavity are connected by a clamping mechanism Relative movement, the clamping mechanism includes a plurality of serrations and a shell, the inner side of the shell is movably connected with a clamping block through a second spring, the front end face of the base is provided with a transverse groove, the inner side of the transverse groove is provided with an outer sleeve rod, the inner side of the outer sleeve rod is penetrated by a pull rod, the front end face of the outer sleeve rod is provided with a first through hole, the front end face of the pull rod is sleeved with a first spring, the front end face of the pull rod is installed with a sleeve plate, the lower end face of the sleeve plate is provided with a socket, the lower end face of the pull rod is provided with a positioning hole, and the sleeve plate is limited by a limiting mechanism.

[0006] Preferably, the lower end face of the movable seat is fixedly connected to the upper end face of the connecting plate, the front end face and the rear end face of the movable seat are both installed with strip plates, the front end face and the rear end face of the inner wall of the slide groove are both provided with strip grooves, and the strip plates are stuck in the inner side of the strip grooves, and the fixed plate is fixedly connected to the inner wall of the movable cavity through a support column.

[0007] Preferably, the rear end face of the sawtooth is fixedly connected to the front end face of the fixed plate, the rear end face of the shell is fixedly connected to the rear end face of the pull rod, the rear end face of the shell is provided with an opening, the clamping block moves inside the opening, the front end face of the clamping block is sleeved with a limiting plate, and the size of the limiting plate is larger than the size of the opening.

[0008] Preferably, the rear end face of the connecting plate is provided with a receiving groove, the pull rod passes through the connecting plate, the size of the shell is smaller than the size of the receiving groove, the upper end face and the lower end face of the outer rod are both installed with limiting blocks, the upper end face and the lower end face of the transverse groove are both provided with limiting grooves, and the limiting blocks are stuck in the inner side of the limiting grooves.

[0009] Preferably, one side of the outer surface of the serration is set as a first arc surface, and the other side of the outer surface of the serration is provided with a slot, a second arc surface is provided above one side of the outer surface of the block, and a protrusion is provided above the other side of the outer surface of the block, and the protrusion can be inserted into the inner side of the slot.

[0010] Preferably, a limiting ring is sleeved on the front of the outer surface of the pull rod, the front end surface of the first spring is fixedly connected to the rear end surface of the limiting ring, and the rear end surface of the first spring is fixedly connected to the inner wall of the first through hole.

[0011] Preferably, the limiting mechanism includes a horizontal plate, the rear end face of the horizontal plate is connected to the front end face of the base, the upper end face of the horizontal plate is penetrated by a second through hole, an insertion rod is provided on the inner side of the second through hole, the outer surface of the insertion rod is sleeved with a third spring, the insertion rod can be inserted into the inner side of the insertion hole and the positioning hole, and the lower end face of the insertion rod is sleeved with a pull plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model is provided with a clamping mechanism. When the lifting platform is raised by the hydraulic rod, the mobile seat on the right side will move to the left on the inner side of the slide groove, driving the connecting plate to move to the left. When the connecting plate moves to the left, the second curved surface of the clamping block will contact the first curved surface of the outer surface of the sawtooth. The sawtooth will squeeze the clamping block, and the clamping block will move forward and retract into the inner side of the shell to avoid affecting the movement of the connecting plate. When it is adjusted to a suitable height, the hydraulic rod is closed. At this time, the protrusion of the clamping block is clamped into the clamping groove of the adjacent sawtooth. If the lifting platform is lowered, the mobile seat and the connecting plate will be driven to move to the right. At this time, the sawtooth The card block is limited to prevent the connecting plate from sliding to the right, and by setting a limiting mechanism, when the lift table needs to be lowered, the insertion rod can be pulled first to make the insertion rod leave the inner side of the socket, and then the sleeve plate can be pulled to move the pull rod forward, driving the shell and the card block forward, and retracted into the inner side of the storage groove to prevent the serrations from obstructing the connecting plate when it moves to the right. At the same time, the insertion rod can be inserted into the inner side of the positioning hole to limit the pull rod, and the operator does not need to pull the sleeve plate all the time. This utility model does not require an additional independent installation of a set of circuits or actuators to prevent the lift table from suddenly dropping, which greatly reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is the main view of the entire utility model;

[0016] Figure 3 It is a top sectional view of the active cavity of the utility model;

[0017] Figure 4 This is a schematic diagram of the partial structure of the clamping mechanism of the utility model;

[0018] Figure 5 It is a side view of the entire utility model;

[0019] Figure 6 It is a partial structural diagram of the limiting mechanism of the utility model.

[0020] In the figure: 1. base; 2. hydraulic rod; 3. platform bracket; 4. slide; 5. sleeve; 6. transverse groove; 7. lift table; 8. movable cavity; 9. connecting plate; 10. fixing plate; 11. pull rod; 12. first spring; 13. first through hole; 14. outer sleeve; 15. movable seat; 16. clamping mechanism; 1601. sawtooth; 1602. clamping block; 1603. shell; 1604. second spring; 17. storage slot; 18. positioning hole; 19. insertion hole; 20. limiting mechanism; 2001. insertion rod; 2002. second through hole; 2003. transverse plate; 2004. third spring. DETAILED DESCRIPTION

[0021] 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.

[0022] The hydraulic rod (model SJYG70-1000) mentioned in the present invention can be purchased from the market or obtained through private customization.

[0023] See also Figures 1 to 6 The utility model provides an embodiment: a hydraulic lift for equipment lifting, including a base 1 and a platform bracket 3, the upper end surface of the base 1 is provided with a slide 4, the lower end surface of the platform bracket 3 is installed with a movable seat 15, the movable seat 15 slides on the inner side of the slide 4 through the hydraulic rod 2, the top of the platform bracket 3 is connected with the lifting machine table 7, the lower side of the slide 4 is provided with a movable cavity 8, the front side of the movable cavity 8 is provided with a connecting plate 9, the rear side of the connecting plate 9 is provided with a fixed plate 10, the fixed plate 10 and the movable cavity 8 are relatively movable through a clamping mechanism 16, and the clamping mechanism 16 includes multiple A saw tooth 1601 and a shell 1603, the inner side of the shell 1603 is movably connected with a block 1602 through a second spring 1604, the front end face of the base 1 is provided with a transverse groove 6, the inner side of the transverse groove 6 is provided with an outer sleeve rod 14, the inner side of the outer sleeve rod 14 is penetrated by a pull rod 11, the front end face of the outer sleeve rod 14 is provided with a first through hole 13, the front end face of the outer surface of the pull rod 11 is sleeved with a first spring 12, the front end face of the pull rod 11 is installed with a sleeve plate 5, the lower end face of the sleeve plate 5 is provided with a socket 19, the lower end face of the pull rod 11 is provided with a positioning hole 18, and the sleeve plate 5 is limited by a limiting mechanism 20.

[0024] The lower end face of the movable seat 15 is fixedly connected to the upper end face of the connecting plate 9. The front end face and the rear end face of the movable seat 15 are both installed with strip plates. The front end face and the rear end face of the inner wall of the slide groove 4 are both provided with strip grooves, and the strip plates are inserted into the inner side of the strip grooves. The fixed plate 10 is fixedly connected to the inner wall of the movable cavity 8 through the support column, which improves the sliding stability of the movable seat 15. The movement of the movable seat 15 can drive the connecting plate 9 to move.

[0025] The rear end face of the sawtooth 1601 is fixedly connected to the front end face of the fixed plate 10, and the rear end face of the shell 1603 is fixedly connected to the rear end face of the pull rod 11. The rear end face of the shell 1603 is provided with an opening, and the block 1602 moves inside the opening. The front end face of the block 1602 is provided with a limit plate, and the size of the limit plate is larger than the size of the opening. The movement of the pull rod 11 can drive the shell 1603 to move, thereby preventing the block 1602 from separating from the shell 1603.

[0026] The rear end face of the connecting plate 9 is provided with a receiving groove 17, the pull rod 11 passes through the connecting plate 9, the size of the shell 1603 is smaller than the size of the receiving groove 17, the upper end face and the lower end face of the outer rod 14 are installed with limiting blocks, the upper end face and the lower end face of the transverse groove 6 are provided with limiting grooves, and the limiting blocks are stuck in the inner side of the limiting grooves. The shell 1603 can be retracted into the inner side of the receiving groove 17, thereby improving the stability of the outer rod 14 sliding on the inner side of the transverse groove 6.

[0027] One side of the outer surface of the sawtooth 1601 is set as a first curved surface, and a slot is provided on the other side of the outer surface of the sawtooth 1601. A second curved surface is provided above one side of the outer surface of the card block 1602, and a protrusion is provided above the other side of the outer surface of the card block 1602. The protrusion can be inserted into the inner side of the slot. When the second curved surface of the card block 1602 contacts the first curved surface of the sawtooth 1601, the sawtooth 1601 will squeeze the card block 1602 forward.

[0028] A limiting ring is sleeved in front of the outer surface of the pull rod 11, the front end face of the first spring 12 is fixedly connected to the rear end face of the limiting ring, and the rear end face of the first spring 12 is fixedly connected to the inner wall of the first through hole 13, thereby improving the stability of the pull rod 11 moving inside the outer rod 14.

[0029] The limiting mechanism 20 includes a horizontal plate 2003, the rear end face of the horizontal plate 2003 is connected to the front end face of the base 1, the upper end face of the horizontal plate 2003 is penetrated by a second through hole 2002, the inner side of the second through hole 2002 is provided with an insertion rod 2001, the outer surface of the insertion rod 2001 is provided with a third spring 2004, the insertion rod 2001 can be inserted into the inner side of the insertion hole 19 and the positioning hole 18, and the lower end face of the insertion rod 2001 is provided with a pull plate, which can be used to move the insertion rod 2001 by pulling the pull plate.

[0030] When the hydraulic lift for lifting equipment is in use, the power is first turned on, and the clamping mechanism 16 is provided. At the same time, the lifting platform 7 is raised by the hydraulic rod 2, and the movable seat 15 on the right side moves to the left on the inner side of the slide 4, driving the connecting plate 9 to move to the left. When the connecting plate 9 moves to the left, the second curved surface of the surface of the block 1602 contacts the first curved surface of the outer surface of the serration 1601, and the serration 1601 squeezes the block 1602. The block 1602 moves forward and retracts into the inner side of the shell 1603 to avoid affecting the movement of the connecting plate 9. When it is adjusted to a suitable height, the hydraulic rod 2 is closed. At this time, the protrusion of the block 1602 is stuck in the clamping groove of the adjacent serration 1601. If the lifting platform 7 drops, the movable seat 15 and the connecting plate 9 are driven to move to the right. At this time, the sawtooth 1601 limits the block 1602, which can prevent the connecting plate 9 from sliding to the right. By setting the limiting mechanism 20, when the lifting platform 7 needs to be lowered, the insertion rod 2001 can be pulled first to make the insertion rod 2001 leave the inner side of the socket 19, and then the sleeve plate 5 is pulled to make the pull rod 11 move forward, driving the shell 1603 and the block 1602 to move forward and retract into the inner side of the storage groove 17 to prevent the sawtooth 1601 from hindering the connecting plate 9 when it moves to the right. At the same time, the insertion rod 2001 can be inserted into the inner side of the positioning hole 18 to limit the pull rod 11. There is no need for the operator to keep pulling the sleeve plate 5. The utility model does not require an additional independent installation of a set of circuits or actuators to prevent the lifting platform 7 from suddenly falling, which greatly reduces the cost.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A hydraulic lift for equipment lifting, comprising a base (1) and a platform support (3), wherein the upper end surface of the base (1) is provided with a slide groove (4), the lower end surface of the platform support (3) is provided with a movable seat (15), the movable seat (15) slides inside the slide groove (4) through a hydraulic rod (2), and the top end of the platform support (3) is connected to a lift table (7), characterized in that: A movable cavity (8) is provided below one side of the slide groove (4), a connecting plate (9) is provided in front of the inner side of the movable cavity (8), a fixed plate (10) is installed behind the connecting plate (9), the fixed plate (10) and the movable cavity (8) are relatively movable via a clamping mechanism (16), the clamping mechanism (16) comprises a plurality of saw teeth (1601) and a shell (1603), the inner side of the shell (1603) is movably connected to a clamping block (1602) via a second spring (1604), and a transverse groove ( 6), an outer rod (14) is provided on the inner side of the transverse groove (6), a pull rod (11) is provided through the inner side of the outer rod (14), a first through hole (13) is provided on the front end face of the outer rod (14), a first spring (12) is sleeved in front of the outer surface of the pull rod (11), a sleeve plate (5) is installed on the front end face of the pull rod (11), a socket (19) is provided on the lower end face of the sleeve plate (5), a positioning hole (18) is provided on the lower end face of the pull rod (11), and the sleeve plate (5) is limited by a limiting mechanism (20).

2. The hydraulic lift for equipment lifting according to claim 1, characterized in that: The lower end face of the movable seat (15) is fixedly connected to the upper end face of the connecting plate (9), the front end face and the rear end face of the movable seat (15) are both installed with strip plates, the front end face and the rear end face of the inner wall of the slide groove (4) are both provided with strip grooves, and the strip plates are inserted into the inner side of the strip grooves, and the fixed plate (10) is fixedly connected to the inner wall of the movable cavity (8) through a support column.

3. The hydraulic lift for equipment lifting according to claim 1, characterized in that: The rear end face of the saw tooth (1601) is fixedly connected to the front end face of the fixed plate (10), and the rear end face of the shell (1603) is fixedly connected to the rear end face of the pull rod (11). The rear end face of the shell (1603) is provided with an opening, and the clamping block (1602) moves inside the opening. The front end face of the clamping block (1602) is sleeved with a limiting plate, and the size of the limiting plate is larger than the size of the opening.

4. The hydraulic lift for equipment lifting according to claim 1, characterized in that: The rear end face of the connecting plate (9) is provided with a receiving groove (17), the pull rod (11) passes through the connecting plate (9), the size of the shell (1603) is smaller than the size of the receiving groove (17), the upper end face and the lower end face of the outer rod (14) are both installed with limiting blocks, the upper end face and the lower end face of the transverse groove (6) are both provided with limiting grooves, and the limiting blocks are stuck in the inner side of the limiting grooves.

5. The hydraulic lift for equipment lifting according to claim 1, characterized in that: One side of the outer surface of the sawtooth (1601) is set as a first arc surface, and the other side of the outer surface of the sawtooth (1601) is provided with a slot. A second arc surface is provided above one side of the outer surface of the block (1602), and a protrusion is provided above the other side of the outer surface of the block (1602), and the protrusion can be inserted into the inner side of the slot.

6. The hydraulic lift for equipment lifting according to claim 1, characterized in that: A limiting ring is sleeved in front of the outer surface of the pull rod (11), the front end surface of the first spring (12) is fixedly connected to the rear end surface of the limiting ring, and the rear end surface of the first spring (12) is fixedly connected to the inner wall of the first through hole (13).

7. The hydraulic lift for equipment lifting according to claim 1, characterized in that: The limiting mechanism (20) includes a transverse plate (2003), the rear end face of the transverse plate (2003) is connected to the front end face of the base (1), the upper end face of the transverse plate (2003) is provided with a second through hole (2002), the inner side of the second through hole (2002) is provided with an insertion rod (2001), the outer surface of the insertion rod (2001) is provided with a third spring (2004), the insertion rod (2001) can be inserted into the inner side of the insertion hole (19) and the positioning hole (18), and the lower end face of the insertion rod (2001) is provided with a pull plate.

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