CN207209857U - A kind of manual apparatus for automatically lifting with auto-lock function - Google Patents

Abstract

The utility model discloses a kind of manual apparatus for automatically lifting with auto-lock function, belong to lift field；Technical problem to be solved there is provided a kind of synchronism height, and stability is good, can realize the lowering or hoisting gear of self-locking at work；Solve technical scheme that the technical problem uses for：A kind of manual apparatus for automatically lifting with auto-lock function, including hydraulic motor, the first elevating mechanism, the second elevating mechanism, connected between first elevating mechanism and the second elevating mechanism by universal joint and drive shaft, hydraulic motor is connected with the first elevating mechanism, and self-locking device and manual setter are provided between hydraulic motor and the first elevating mechanism；The utility model can be widely applied to lift field.

Description

A manual automatic lifting device with self-locking function

technical field

The utility model relates to a manual automatic lifting device with a self-locking function, which belongs to the technical field of lifts.

Background technique

Existing lifting devices usually use several sets of hydraulic cylinders to work in parallel to achieve lifting. Although the structure is simple, the synchronization is poor. At the same time, the hydraulic components are prone to leakage during operation and pressure maintenance, resulting in poor equipment stability.

Utility model content

The utility model overcomes the shortcomings of the prior art and provides a lifting device with high synchronization, good stability and self-locking during work.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a manual automatic lifting device with self-locking function, including a transmission mechanism, a first lifting mechanism, and a second lifting mechanism, and the feature is that the transmission mechanism includes a hydraulic motor , the first transmission shaft, the first bevel gear shaft, the second bevel gear shaft, the first universal joint, the second transmission shaft, the second universal joint, the third bevel gear shaft, the first lifting mechanism includes a screw, a nut 1. Bevel gear, the bevel gear and the nut are rigidly connected and set on the lead screw, and the structure of the second lifting mechanism is the same as that of the first lifting mechanism;

One end of the first drive shaft is connected to the output shaft of the hydraulic motor, and the other end is connected to the first bevel gear shaft. The first bevel gear shaft meshes with the bevel gear shaft, the bevel gear meshes with the second bevel gear shaft, and the second bevel gear The first universal joint is connected with the second transmission shaft, the second transmission shaft is connected with the second universal joint, the second universal joint is connected with the third bevel gear shaft, and the third bevel gear shaft is connected with the second lift bevel gear meshing of the mechanism;

The first transmission shaft is provided with a first bevel gear, the first bevel gear is fixedly connected with the first transmission shaft, a hand-operated device is arranged above the first transmission shaft, a second bevel gear is arranged in the hand-operated device, and the first bevel gear Mesh with the second bevel gear;

A self-locking device is provided between the connection between the first transmission shaft and the first bevel gear shaft;

A clutch is arranged at the place where the hydraulic motor is connected with the first transmission shaft.

The hydraulic motor is provided with a safety valve.

A shift fork is arranged in the manual device.

The second transmission shaft is made of carbon fiber.

It is also possible to increase the number of lifting mechanisms according to actual conditions.

Compared with the prior art, the utility model has the following beneficial effects.

1. The hydraulic motor is used as the power source to output torque and power, with compact structure and large output power.

2. There is a safety valve on the hydraulic motor circuit, and the transmission mechanism stops rotating when overloaded, which increases the safety factor of the equipment.

3. Universal joints are used between the lifting devices to transmit torque and power, so that the two axes that are not on the same axis or the axis has a large angle or axial movement are continuously rotated at the same angular speed, and the torque and motion can be reliably transmitted, which increases the equipment. reliability.

4. There is a shift fork under the hand-cranking device, which can swing the toothed clutch to realize the meshing and disengagement of the toothed clutch, so as to realize manual and automatic switching. In an emergency state, the motor drive can be disconnected and the hand-cranking device can be used. The handle realizes the lifting of the equipment.

5. A self-locking device is installed between the first transmission shaft and the first bevel gear shaft for connection, which can ensure that the first bevel gear shaft will not rotate in reverse under the action of external force, and can achieve locking, ensuring the reliability of the product .

6. A bevel gear is installed on the lead screw of the lifting device, the transmission ratio is small, the speed is low, and the transmission is stable.

7. The second transmission shaft is made of carbon fiber, which is light in weight, with a specific modulus 3-5 times higher than steel, and a specific strength 5-8 times higher than steel.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described further.

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a partially enlarged view of FIG. 1 .

In the figure, 1 is the hydraulic motor, 2 is the first transmission shaft, 3 is the first bevel gear shaft, 4 is the second bevel gear shaft, 5 is the first universal joint, 6 is the second transmission shaft, and 7 is the second ten thousand Joint, 8 is the third bevel gear shaft, 9 is the lead screw, 10 is the nut, 11 is the bevel gear, 12 is the self-locking device, 13 is the clutch, 14 is the second bevel gear, 15 is the first bevel gear, 16 For the shift fork.

Detailed ways

As shown in Figure 1, the utility model is a manual automatic lifting device with self-locking function, including a transmission mechanism, a first lifting mechanism, and a second lifting mechanism. The transmission mechanism includes a hydraulic motor 1, a first transmission shaft 2, a first The bevel gear shaft 3, the second bevel gear shaft 4, the first universal joint 5, the second transmission shaft 6, the second universal joint 7, the third bevel gear shaft 8, the first lifting mechanism includes a screw 9, a nut 10 , bevel gear 11, bevel gear 11 and nut 10 are rigidly connected and set on the lead screw 9, the structure of the second lifting mechanism is the same as that of the first lifting mechanism; one end of the first transmission shaft 2 is connected with the output shaft of the hydraulic motor 1, and the other end is connected with the output shaft of the hydraulic motor 1 The first bevel gear shaft 3 is connected, the first bevel gear shaft 3 meshes with the bevel gear 11, the bevel gear 11 meshes with the second bevel gear shaft 4, the second bevel gear 4 is connected with the first universal joint 5, and the first universal joint The joint 5 is connected with the second transmission shaft 6, the second transmission shaft 6 is connected with the second universal joint 7, the second universal joint 7 is connected with the third bevel gear shaft 8, and the third bevel gear shaft 8 is connected with the second lifting mechanism bevel gear meshing; the first transmission shaft is provided with a first bevel gear 15, the first bevel gear 15 is fixedly connected with the first transmission shaft 2, a hand-operated device is provided above the first transmission shaft 2, and a hand-operated device is provided in the hand-operated device The second bevel gear 14, the first bevel gear 15 meshes with the second bevel gear 14; a self-locking device 12 is provided between the first transmission shaft 2 and the first bevel gear shaft 3 connection; the hydraulic motor 1 and the first transmission shaft 2. A clutch 13 is provided at the connecting place; a safety valve is provided on the hydraulic motor 1; a shift fork 16 is provided in the manual device; the second transmission shaft 6 is made of carbon fiber material; The situation increases the number of lifting mechanisms.

When the utility model is in use, the hydraulic motor 1 transmits power to the first lifting device through the first transmission shaft 2 and the first bevel gear shaft 3, driving the bevel gear 11 of the first lifting device to rotate, and the bevel gear of the first lifting device 11 is rigidly connected with the lead screw nut 10, so when the bevel gear 11 rotates, it will drive the lead screw nut 10 to rotate. After the nut 10 rotates, the lead screw 9 is driven to move linearly, and the second bevel gear shaft 4 meshes with the bevel gear 11. Therefore, when the bevel gear 11 rotates, it will drive the second bevel gear shaft 4 to rotate, and the power and torque will be transmitted to the next lifting device through the universal joint 5, so as to realize the synchronous action of the lifting mechanism; when the hydraulic motor 1 stops working, the automatic The lock device 12 can lock the first bevel gear shaft 3, avoiding the reverse movement of the lead screw 9 under the action of the load, and ensuring the reliability of the equipment; when the hydraulic motor 1 fails, the clutch 13 can be disconnected through the shift fork 16, and the Manually drives the lead screw 9 to move.

The above embodiments of the utility model have been described in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (5)

1. A manual automatic lifting device with self-locking function, including a transmission mechanism, a first lifting mechanism, and a second lifting mechanism, characterized in that: the transmission mechanism includes a hydraulic motor (1), a first transmission shaft (2), a second One bevel gear shaft (3), the second bevel gear shaft (4), the first universal joint (5), the second transmission shaft (6), the second universal joint (7), the third bevel gear shaft (8 ), the first lifting mechanism includes a lead screw (9), a nut (10), a bevel gear (11), the bevel gear (11) and the nut (10) are rigidly connected and set on the lead screw (9), and the structure of the second lifting mechanism Same structure as the first lifting mechanism; One end of the first transmission shaft (2) is connected to the output shaft of the hydraulic motor (1), and the other end is connected to the first bevel gear shaft (3). The first bevel gear shaft (3) meshes with the bevel gear (11), and the bevel gear ( 11) Mesh with the second bevel gear shaft (4), the second bevel gear shaft (4) is connected with the first universal joint (5), the first universal joint (5) is connected with the second transmission shaft (6), The second transmission shaft (6) is connected with the second universal joint (7), the second universal joint (7) is connected with the third bevel gear shaft (8), and the third bevel gear shaft (8) is connected with the second lifting mechanism bevel gear meshing; The first bevel gear (15) is arranged on the first transmission shaft, and the first bevel gear (15) is fixedly connected with the first transmission shaft (2). A second bevel gear (14) is arranged inside, and the first bevel gear (15) meshes with the second bevel gear (14); A self-locking device (12) is provided between the connection between the first transmission shaft (2) and the first bevel gear shaft (3); A clutch (13) is provided at the place where the hydraulic motor (1) is connected to the first transmission shaft (2). 2. A manual automatic lifting device with self-locking function according to claim 1, characterized in that: said hydraulic motor (1) is provided with a safety valve. 3. A manual automatic lifting device with self-locking function according to claim 1, characterized in that: a shift fork (16) is arranged in the manual device. 4. The manual automatic lifting device with self-locking function according to claim 1, characterized in that: the second transmission shaft (6) is made of carbon fiber. 5. A manual automatic lifting device with self-locking function according to claim 1, characterized in that: the number of lifting mechanisms can also be increased according to actual conditions.