CN219236917U - Lifting device for small vehicle-mounted equipment - Google Patents

Abstract

The utility model provides a lifting device of small-sized vehicle-mounted equipment, which drives a trapezoidal screw rod of a speed reducer to rotate by a motor or a manual mode, and a nut arranged at the bottom of a movable cylinder is driven by the trapezoidal screw rod to realize the up-and-down lifting of the movable cylinder; the sequence mechanism controls the lifting sequence of the movable cylinders, and the movable rods which do not participate in the movement are locked on the fixed cylinders and kept still; the locking mechanism locks the two adjacent movable cylinders into a whole, so that the lower movable cylinder can push the upper movable cylinder to lift together; the limiting mechanism limits the lifting height, and when the lifting frame is lifted to the highest position and the lifting frame is lowered to the lowest position, the whole mechanism is powered off and locked. The utility model avoids abrasion or movement interference caused by relative movement of adjacent cylinder bodies in the transportation or lifting process, can realize rigid locking at any position in the lifting process, has automatic and manual double working modes, has simple structure and good maintainability, and can more widely meet the lifting requirements of various small-sized vehicle-mounted equipment.

Description

Lifting device for small vehicle-mounted equipment

technical field

The invention relates to the field of vehicle-mounted equipment, in particular to a vehicle-mounted elevating device.

Background technique

At present, the lifting devices of vehicle-mounted equipment mainly include manual lifting devices, electric lifting devices and manual/electric dual-mode lifting devices. Manual lifting devices generally use steel wire ropes to drive and carry the lifting cylinder to drive the equipment to a higher height. The disadvantage is that some ropes are exposed to the external environment for a long time, and often circulate inside and outside the mechanism, which is easy to bring in pollutants and has poor environmental adaptability. The 2nd, rope has elasticity, and environmental change causes poor repeatability of positioning, and the 3rd, carrying capacity is little, and manual operation is time-consuming and laborious. The electric lifting device generally has a high degree of integration, and the motion control and locking components are often designed at the joint position of the cylinder body and the head of each section. The design of the locking mechanism, the limit mechanism and the cylinder body structure is relatively complicated, and it is impossible to visually view the details from the outside. The structure is difficult to disassemble, and the on-site maintenance guarantee is poor.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a lifting device for small vehicle-mounted equipment, which has automatic and manual dual working modes, simple structure, good maintainability, and can more widely meet the elevating requirements of various small vehicle-mounted equipment.

The technical solution adopted by the present invention to solve its technical problems is:

A lifting device for a small vehicle-mounted device comprises a speed reducer, a fixed cylinder, a movable cylinder, a locking mechanism, a sequence mechanism and a limiting mechanism.

The reducer includes a gear and a trapezoidal screw. A gear is coaxially fixed at the lower end of the trapezoidal screw. The gear meshes with two gears. One of the meshed two gears is coaxially connected to the motor output shaft, and the other is coaxially connected to the motor output shaft. Coaxial connection with manual crank;

The fixed cylinder is a hollow cylinder with limited holes on the outer wall; the lower end of the fixed cylinder is fixedly connected to the reducer, and the upper end supports the movable cylinder;

The movable cylinder is a hollow cylinder with limited holes on the outer wall; the screw nut is installed at the lower end of the cylinder body to achieve engagement with the trapezoidal screw, and converts the rotational motion of the screw into the up and down linear motion of the nut, driving the cylinder The body moves up and down; the rod head is installed on the top of the cylinder body to fix the related parts of the locking mechanism, sequence mechanism and limit mechanism;

The limit mechanism is installed on the fixed cylinder, including a telescopic assembly, a driving rod, a pressure rod, a spring, and a limit switch. Two limit switches are installed on the outer wall of the fixed cylinder, and one of them is triggered by the driving rod to control the motor to turn off. The other is triggered by the pressure rod to control the power outage of the motor; the driving rod is hinged on the outer wall of the fixed cylinder, and one end is located at the limit hole of the fixed cylinder. The position hole enters the fixed cylinder, and the other end is triggered by the spring tension to trigger the limit switch. When the movable cylinder descends, the cylinder wall pushes the lever to turn over, and overcomes the spring tension to break away from the limit switch; First, each telescopic assembly is lifted upwards under the action of the spring, and moves downward against the action of the spring under the extrusion of the rod head of the next-stage movable cylinder; The pressure rod moves downward under the action of the telescopic component to trigger the limit switch, and the pressure rod moves upward after the movable cylinder rises to the position, leaving the limit switch;

The sequence mechanism includes a lock seat, a lock shaft and a spring. The upper end of the lock seat is wedge-shaped. One end of the lock shaft moves toward the inside of the movable cylinder under the action of the spring and passes through the limit hole on the wall of the movable cylinder. There is a wedge groove at one end, and the wedge groove cooperates with the lock seat of the upper level to drive the lock shaft to move outward and break away from the limit hole of the movable cylinder wall;

The locking mechanism includes a lock seat, a lock shaft and a spring. The lock seat is provided with a through hole, and one end of the lock shaft moves toward the inside of the movable cylinder under the action of the spring, and passes through the wall of the movable cylinder to enter the next stage. The limit hole of the movable cylinder, when the lower stage movable cylinder is lowered in place, pushes the lock shaft to overcome the action of the spring, and enters the lock seat of the upper stage movable cylinder.

There are multiple movable cylinders, one movable cylinder is coaxially installed in the fixed cylinder, and the other movable cylinders are coaxially installed in the upper-level movable cylinder successively. Lever meshing; the upper end of the movable cylinder is fixedly connected with the rod head whose outer diameter is larger than the movable cylinder, and the upper end surface of the rod head is provided with a sequence mechanism and a locking mechanism.

The limit mechanism also includes a box body, the box body is installed on the fixed cylinder, the telescopic assembly, driving rod, pressure rod, spring, and limit switch are installed in the box body, and the telescopic assembly is installed on the head of each movable cylinder body. When retracting and descending, after the four-rod head of the uppermost movable cylinder descends to the predetermined minimum position, the telescopic components at all levels are compressed, transmitted layer by layer, and finally transmitted to the pressure rod, and the contact piece of the limit switch is compressed to trigger the signal of falling in place, and the mechanism Power off and stop movement, so that the entire mechanism locks and remains in the retracted state. When erecting and rising, after the movable cylinder rises to the position, the spring pulls the lever, compresses the contact piece of the limit switch, triggers the rising signal, and the mechanism stops moving when the power is turned off. The entire mechanism is locked and kept in the erected state.

The beneficial effects of the present invention are:

1) During transportation or lifting, the movable cylinders and between the movable cylinder and the fixed cylinder are locked together at all times to avoid relative movement of adjacent cylinders, causing wear or motion interference; when erecting and rising, drive them step by step The movable cylinder 4, movable cylinder 3, movable cylinder 2 and movable cylinder 1 go up, and the previous movable cylinder is locked into one body with the next movable cylinder after it rises in place, and is driven by the lower movable cylinder to continue to rise. All cylinders are locked into one body and maintain this state; when retracting and descending, the movable cylinder 1, movable cylinder 2, movable cylinder 3 and movable cylinder 4 are sequentially driven down step by step, and the movable cylinders that have fallen in place are locked with the fixed cylinders, and all cylinders are locked. After falling into place, they are locked together and maintained in this state, and the non-moving moving cylinder and fixed cylinder are locked together to avoid relative movement of adjacent cylinders during transportation or lifting, resulting in wear or motion interference.

2) Using the trapezoidal screw drive with self-locking function, it can realize rigid locking at any position during the lifting process.

3) With manual and electric dual working modes, it is suitable for various working occasions.

4) All mechanisms are visible from the outside, disassembled, good maintainability, and easy to repair and replace.

Description of drawings

Fig. 1 is the forward and side sectional view of overall structure of the present invention;

Fig. 2 is the structural schematic diagram of the reducer of the present invention;

Fig. 3 is the structural principle diagram of movable cylinder one of the present invention;

Fig. 4 is the structural principle diagram of the position-limiting mechanism of the present invention;

Fig. 5 is the structural principle diagram of sequence mechanism of the present invention;

Fig. 6 is a structural principle diagram of the locking mechanism of the present invention;

The state shown in Fig. 7 (a) is that the lock shaft two of the locking mechanism installed on the rod head of the movable cylinder stretches out under the action of elastic force; Cylinder two (4) continue to descend together; The state shown in Fig. 7 (c) is that the lock shaft one of the sequential mechanism that is installed on the movable cylinder one rod head stretches out to the right under the sliding effect of the wedge groove inclined plane on the right side of movable cylinder two;

Fig. 8 is a structural diagram of the present invention rising to the position state;

In the figure, 1-reducer, 2-fixed cylinder, 3-movable cylinder 1, 4-movable cylinder 2, 5-movable cylinder 3, 6-movable cylinder 4, 7-limiting mechanism, 8-sequence mechanism, 9- Locking mechanism, 11-trapezoidal screw, 12-base, 13-box, 14-motor, 15-pinion one, 16-pinion two, 17-big gear, 18-bearing, 31-screw nut, 32-Cylinder body, 33-Rod head, 34-Sequential lock seat, 35-Locking mechanism deadbolt, 71-Box body, 72-Drive lever, 73-Spring 1, 74-Limit switch 1, 75-Limit Switch two, 76-spring two, 77-pressure rod, 78-telescopic component, 81-lock seat one, 82-lock shaft one, 83-spring three, 91-lock seat two, 92-lock shaft two, 93-spring Four.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The invention provides a lifting device for small vehicle equipment, which is realized by a simple and modular lifting mechanism and a lifting locking method, including a reducer, a fixed cylinder, a movable cylinder one, a movable cylinder two, a movable cylinder three, and a movable cylinder four , Locking mechanism, sequence mechanism and limit mechanism.

The reducer is composed of a box body, a motor, a large gear, a pinion one, a pinion two, a bearing, a base, and a trapezoidal screw. Among them, the box realizes the supporting function of internal gears, bearings, bases and trapezoidal screws; in electric mode, the motor drives the pinion to rotate, and the pinion drives the large gear to rotate, and the large gear drives the trapezoidal screw to rotate; in manual mode, it passes Manually turn the pinion 2, the pinion 2 drives the large gear to rotate, and the large gear drives the trapezoidal screw to rotate; the reducer as a whole plays the role of deceleration, support and transmission;

The fixed cylinder plays an intermediate transition role, the lower end is integrated with the reducer and the vehicle body, and the upper part supports the internal movable cylinder body.

Described movable cylinder one, movable cylinder two, movable cylinder three and movable cylinder four all are made up of cylinder body, leading screw nut, rod head, sequence lock seat, locking mechanism deadbolt. The screw nut is installed at the lower end of the cylinder to achieve engagement with the trapezoidal screw, converting the rotation of the screw into the up and down linear motion of the nut, driving the cylinder to move up and down; the rod head is installed on the top of the cylinder to fix the locking mechanism , sequence mechanism, limit mechanism related components.

The limit mechanism is composed of a box body, a telescopic assembly, a driving rod, a pressure rod, a spring one, a spring two, a limit switch one and a limit switch two. Casing is installed on the fixed cylinder, driving lever, depression bar, spring one, spring two, limit switch are installed in the casing, telescopic assembly is installed on each movable cylinder head. When retracting and descending, after the four-rod head of the uppermost movable cylinder descends to the predetermined minimum position, the telescopic components at all levels are compressed, transmitted layer by layer, and finally transmitted to the pressure rod, and the second contact piece of the limit switch is compressed to trigger the signal of falling in place. The mechanism is de-energized and stopped, leaving the entire mechanism locked in the retracted state. When erecting and rising, once the movable cylinder is raised to the position, the spring pulls the lever, compresses the contact piece of the limit switch, triggers the rising signal, the mechanism is powered off and stops moving, and the whole mechanism is locked and kept in the erected state.

Described sequential mechanism is made up of lock base one, lock shaft one, spring three. The lock seat is installed on the rod head of the movable cylinder, and the external force generated by the wedge groove slope on the upper movable cylinder and the spring interact with each other to drive the lock shaft to move left and right, and to disengage or insert the lock seat in sequence to realize the movable cylinder during the lifting process. sequence of unlocking and locking.

Described locking mechanism is made up of lock base two, lock shaft two, spring four. The lock seat 2 is installed on the rod head of the movable cylinder, and the lock bolt of the locking mechanism installed on the rod head of the next stage interacts with the spring 4 to drive the lock shaft 2 to move left and right, to disengage from or insert into the lock hole on the movable cylinder of the upper stage, and realize the locking mechanism. The process of raising and withdrawing and the locking and unlocking of adjacent movable cylinders.

The working principle of the present invention is to drive the trapezoidal screw of the reducer to rotate through the motor or manually, and the nut installed at the bottom of the movable cylinder is driven by the trapezoidal screw to realize the lifting and lowering of the movable cylinder; the sequence mechanism controls the lifting sequence of the movable cylinder. The movable rod participating in the movement is locked on the fixed cylinder and remains stationary; the locking mechanism locks the two adjacent movable cylinders into one body, so that the lower movable cylinder can push the upper movable cylinder to rise and fall together; the limit mechanism limits the lifting height, When it is raised to the highest position and lowered to the lowest position, the whole mechanism will be locked when it is powered off.

The lifting device involved in the present invention includes a reducer, a fixed cylinder, a movable cylinder one, a movable cylinder two, a movable cylinder three, a movable cylinder four, a locking mechanism, a sequential mechanism, and a limit mechanism, wherein the movable cylinder, the locking mechanism, the sequential mechanism, The precise coordination of the limit mechanism completes the complex multi-cylinder continuous lifting movement, which is a key component with a high failure rate. The invention adopts the design idea of modularization and easy maintenance. The structure of each component is simple, and the movement process can be observed and checked externally. The faults in the external field can be quickly located and the on-site maintenance or component replacement can be implemented, which improves the maintainability and supportability of the equipment in the external field, and saves The cost of time and manpower, especially on military equipment, is of great concern to this capability.

Embodiments of the present invention are shown in Fig. 1, provide a kind of lifting device of small vehicle-mounted equipment, comprise speed reducer 1, fixed cylinder 2, movable cylinder one 3, movable cylinder two 4, movable cylinder three 5, movable cylinder four 6, limit Bit mechanism 7, sequential mechanism 8, locking mechanism 9.

Described speed reducer 1 is made up of trapezoidal screw 11, base 12, casing 13, motor 14, pinion one 15, pinion two 16, bull gear 17, bearing 18, as shown in Figure 2. The pinion one 15 is the transmission gear of the electric mode, drives the large gear 17 and the trapezoidal screw 11 to rotate through the motor drive; Rotation; the two small transmission gears are in parallel mode, drive in electric mode during normal operation, and the pinion 2 16 in manual mode follows the rotation; in the case of power failure, use manual mode, the pinion 2 16 in electric mode and the motor 14 have no torque Generated, following idling without resistance.

Described movable cylinder is taken movable cylinder one 3 as example, is made up of lead screw nut 31, cylinder body 32, bar head 33, sequence lock lock seat 34, locking mechanism dead bolt 35, as shown in Figure 3. The lead screw nut 31 converts the rotary motion of the lead screw into up and down linear motion, the cylinder body 32 acts as an intermediate support, and the rod head 33 is installed with a sequence mechanism 8, a locking mechanism 9, a sequence lock seat 34, a locking mechanism deadbolt 35 and a limit mechanism The telescopic assembly 78.

The limit mechanism 7 is composed of a box body 71, a shift lever 72, a spring 73, a limit switch 74, a limit switch 2 75, a spring 76, a pressure rod 77, and a telescopic assembly 78, as shown in Figure 4 . When the movable cylinders at all levels rise, each telescopic assembly 78 is driven to rise and separate, and the pressure disappears, and the pressure rod 77 rises under the elastic force of the spring 2 76, so that it breaks away from the shrapnel of the limit switch 2 75, and the limit switch 75 resets; After all movable cylinders all rise to put in place, spring one 73 pulls driving rod 72 to rotate, presses the shrapnel of limit switch one 74, and the system is powered off and locked. When the movable cylinders of all levels descend, contrary to the rising process, the descending movable cylinder squeezes the shift rod 72 to rotate, making it break away from the shrapnel of the limit switch one 74, and the limit switch one 74 resets; The telescopic components 78 at all levels are compressed downwards, and the push bar 77 is pushed downwards to press and touch the shrapnel of the limit switch 2 75 to drop to the right position, and the system is powered off and locked.

Described sequence mechanism 8 is made up of lock seat one 81, lock shaft one 82, spring three 83, as shown in Figure 5. Lock shaft one 82 can move left and right under the effect of external force and spring three 83, realizes locking and unlocking.

The locking mechanism 9 is composed of a second lock seat 91, a second lock shaft 92, and a fourth spring 93, as shown in FIG. 6 . Lock shaft two 92 can move left and right under the effect of external force and spring four 93, realize locking and unlocking.

In terms of the overall structure, the reducer and the fixed cylinder are installed as a whole, installed on the vehicle platform, which is a fixed part, and the other parts are movable parts. When working, the trapezoidal screw of the reducer drives the movable cylinder one 3, movable cylinder two 4, movable cylinder three 5, and movable cylinder four 6 to rise and fall in sequence; The locking mechanism on the cylinder locks it into one body, and then it is pushed by the lower-level movable cylinder to continue to rise. After all the movable cylinders are raised to their positions, the last-stage movable cylinders that rise sequentially rise to their positions and trigger the limit mechanism. The whole mechanism is powered off and locked. ;When retracting and descending, after the upper movable cylinder is lowered in place, it will be locked by the sequential mechanism on the rod head of the lower movable cylinder. Power off hold and lock. During the process of descending and ascending, the principle of locking and unlocking between adjacent movable cylinders and fixed cylinders is shown in Figure 7.

The state shown in Fig. 7 (a) is that the lock shaft two 92 of the locking mechanism 9 that is installed on the movable cylinder one 3 bar head stretches out under the action of elastic force, inserts in the movable cylinder two 4 left side lockholes, and the two movable cylinders Locked as one, the two descend under the drive of the trapezoidal screw pair, and the movable cylinder one 3 is about to get back to the fixed cylinder 2 inside, and the lock shaft one 82 of the sequence mechanism 8 is in the movable cylinder two 4 right side wedge grooves under elastic force.

The state shown in Fig. 7 (b) is that along with movable cylinder one 3 and movable cylinder two 4 continue to descend together, movable cylinder one 3 descends to put in place, and the sequence lock seat 34 on the rod head of fixed cylinder 2, locking mechanism deadbolt 35 Through the rod head 33 of the movable cylinder one 3, the locking mechanism deadbolt 35 is inserted in the left side chute of the lock shaft two 92 of the locking mechanism 9, and it is pushed out to the left, so that the movable cylinder one 3 and the movable cylinder two 4 are unlocked and separated, Movable cylinder one 3 descends to put in place motionless, and movable cylinder two 4 continues to descend under leading screw auxiliary drive.

The state shown in Figure 7 (c) is that after the movable cylinder 2 4 continues to descend for a certain distance, the lock shaft 1 82 of the sequence mechanism 8 installed on the rod head of the movable cylinder 1 3 slides on the wedge groove slope on the right side of the movable cylinder 2 4 Stretch out to the right down, insert in the sequence lock seat 34 on the fixed cylinder 2 rod heads, movable cylinder one 3 and fixed cylinder 2 are locked as one.

The descending of movable cylinder two 4, movable cylinder three 5 and movable cylinder four 6, locking mechanism unlocking, sequence mechanism locking principle is the same as above.

The rising process of each movable cylinder is opposite to the principle of the falling process, and the state of the whole mechanism after it has risen to its place is shown in Figure 8.

Claims (2)

1. The utility model provides a small-size vehicle-mounted equipment's elevating gear, includes reduction gear, fixed cylinder, movable cylinder, locking mechanical system, order mechanism and stop gear, its characterized in that:

in the lifting device of the small-sized vehicle-mounted equipment, the speed reducer comprises a gear and a trapezoidal screw, the lower end of the trapezoidal screw is coaxially and fixedly connected with a gear, the gear is meshed with two gears, one of the meshed two gears is coaxially connected with an output shaft of a motor, and the other gear is coaxially connected with a manual rocking handle;

the fixed cylinder is a hollow cylinder, and a limiting hole is formed in the outer side wall of the fixed cylinder; the lower end of the fixed cylinder is fixedly connected with a speed reducer, and the upper end of the fixed cylinder supports the movable cylinder body;

the movable cylinder is a hollow cylinder, and a limiting hole is formed in the outer side wall of the movable cylinder; the screw nut is arranged at the lower end of the cylinder body, so that the screw nut is meshed with the trapezoidal screw, the rotary motion of the screw is converted into the up-down linear motion of the nut, and the cylinder body is driven to move up and down; the rod head is arranged at the top of the cylinder body and used for fixing related components of the locking mechanism, the sequence mechanism and the limiting mechanism;

the limiting mechanism is arranged on the fixed cylinder and comprises a telescopic component, a deflector rod, a pressure rod, a spring and a limiting switch, wherein the two limiting switches are arranged on the outer wall of the fixed cylinder, one of the limiting switches is triggered by the deflector rod to control the motor to be powered off, and the other limiting switch is triggered by the pressure rod to control the motor to be powered off; the driving lever is hinged to the outer wall of the fixed cylinder, one end of the driving lever is positioned at the limit hole of the fixed cylinder, the driving lever penetrates through the limit holes of the fixed cylinder and the movable cylinder to enter the fixed cylinder after the movable cylinder ascends in place, the other end of the driving lever is triggered by the tension of the spring to trigger the limit switch, and the cylinder wall pushes the driving lever to turn over when the movable cylinder descends so as to overcome the tension of the spring and separate from the limit switch; the telescopic components are arranged on the rod heads of the movable cylinders at all levels, each telescopic component is jacked up under the action of a spring, and moves downwards under the extrusion of the rod heads of the movable cylinders at the next level against the action of the spring; the compression bar is jacked up under the action of the spring, the compression bar moves downwards under the action of the telescopic component after the movable cylinder descends in place to trigger the limit switch, and the compression bar moves upwards after the movable cylinder ascends in place to separate from the limit switch;

the sequential mechanism comprises a lock seat, a lock shaft and a spring, wherein the upper end of the lock seat is wedge-shaped, one end of the lock shaft moves towards the inside of the movable cylinder under the action of the spring, penetrates through a limit hole of the movable cylinder wall, and the other end of the lock shaft is provided with a wedge groove which is matched with the lock seat at the previous stage to drive the lock shaft to move outwards and separate from the limit hole of the movable cylinder wall;

the locking mechanism comprises a lock seat, a lock shaft and a spring, wherein a through hole is formed in the lock seat, one end of the lock shaft moves towards the inside of the movable cylinder under the action of the spring, penetrates through the movable cylinder wall to enter a limit hole of the next-stage movable cylinder, and pushes the lock shaft to overcome the action of the spring when the next-stage movable cylinder descends in place and enters the lock seat of the previous-stage movable cylinder;

the limiting mechanism also comprises a box body, the box body is arranged on the fixed cylinder, the telescopic components, the deflector rods, the pressure rods, the springs and the limiting switches are arranged in the box body, the telescopic components are arranged on the rod heads of the movable cylinder, when the telescopic components are withdrawn and lowered, the four rod heads of the uppermost movable cylinder descend to the preset lowest position, the telescopic components at all levels are compressed, and are transmitted layer by layer and finally transmitted to the pressure rods, the limiting switch contact pieces are compressed, the lowering signals are triggered, the mechanism is powered off and stops moving, so that the whole mechanism is locked and kept in a retracted state, and when the movable cylinder is erected and ascends, the deflector rods are pulled by the springs, the limiting switch contact pieces are compressed, the ascending signals are triggered, the mechanism is powered off and stops moving, and the whole mechanism is locked and kept in an erect state.

2. The lifting device of the small-sized vehicle-mounted apparatus according to claim 1, characterized in that:

the plurality of movable cylinders are arranged, one movable cylinder is coaxially arranged in the fixed cylinder, the other movable cylinders are sequentially coaxially arranged in the upper-stage movable cylinder, and the lower end of the movable cylinder is coaxially and fixedly connected with a screw nut and meshed with the trapezoidal screw; the upper end of the movable cylinder is fixedly connected with a club head with the outer diameter larger than that of the movable cylinder, and the upper end surface of the club head is provided with a sequential mechanism and a locking mechanism.

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