CN216584054U

CN216584054U - Movable lifting platform

Info

Publication number: CN216584054U
Application number: CN202120406088.2U
Authority: CN
Inventors: 熊坤; 卢伟; 陈微
Original assignee: Frantec Changzhou Construction Machinery Co ltd
Current assignee: Frantec Changzhou Construction Machinery Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2022-05-24
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses a movable lifting platform, which comprises a lifting platform, wherein the lifting platform consists of a chassis, a lifting device, a transmission device and a load-carrying platform; the bottom end of the chassis is provided with a spring balancer and a traction rope, wherein a conical winding rope path is arranged in the spring balancer, a bidirectional pulley roller group is arranged at the end face of the spring balancer, the traction rope is fixedly wound in the conical winding rope path, and an inert spring is arranged between the tail end of the traction rope and a positioning table of the spring balancer and connected and fixed. The utility model discloses a mobile platform can one rely on the portable lift platform that muscle strength can easily operate, easy operation, transportation convenience, go up and down fast, and complete machine compact structure simultaneously, safe and reliable can use for a long time, and this mobile platform has used the balancer device to have excellent durability and reliability simultaneously, has obvious difference in the great region of the difference in temperature and the region that does not have any safety problem.

Description

Movable lifting platform

Technical Field

The utility model relates to the technical field of aerial work platforms, in particular to a movable lifting platform.

Background

The movable lifting platform is widely applied to industries such as factories, buildings, decorations, conference centers and the like, can be operated by one person or at most 2 to 3 persons, and can be vertically transported on a horizontal plane which is several meters higher than the ground. Platforms for vertically transporting personnel are typically attached to a moving mast, with the various sections of the mast being moved relative to one another by cables or other suitable power transmission systems to ultimately produce relative movement of the platform. At present, the driving is mostly performed through hydraulic or electric driving, and can also be performed manually. For the manual driving mode, since the manual force of the operator is determined by the mass of the platform, the mass of the platform is relatively large to ensure stability and safety requirements, and in addition, the higher the load, the higher the maximum working height and the greater the power required by the personnel and tools yet to be transported. Various designs are known on the market which support the upward movement of the platform by means of a spring or screw device. This in turn not only affects the segmented mast, but also increases the workload on the user as the springs progressively fail in a manner that uses gas springs to reduce manual effort.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages caused by the structure of supporting the platform to move upwards through the spring or screw device in the prior art, thereby providing a mobile lifting platform which can be easily operated by a single person with muscle strength.

In order to solve the technical problem, the movable lifting platform comprises a lifting platform, wherein the lifting platform consists of a chassis, a lifting device, a transmission device and a loading platform;

the bottom end of the chassis is provided with a spring balancer and a traction rope, wherein a conical winding rope path is arranged inside the spring balancer, a bidirectional pulley roller group is arranged at the end face of the spring balancer, the traction rope is fixedly wound in the conical winding rope path, and an inert spring is arranged between the tail end of the traction rope and a positioning table of the spring balancer for connection and fixation;

the loading platform is fixedly connected with the lifting device, the lifting device is connected with the chassis through a middle roller in the pulley roller group, and the transmission device is fixedly connected to the front plate part of the loading platform.

In an embodiment of the present invention, the base plate is provided with a fixed caster, a swivel caster and a pulley roller set, wherein the fixed caster is provided with an automatic locking structure for cooperating with the platform to rise, and the swivel caster is fixed at the front end of the advancing direction of the lifting platform through a threaded support.

In an embodiment of the present invention, the pulley roller group includes fixed stand, fixing device a, lower pulley roller, upper pulley roller, haulage rope, fixing device a on the integration be equipped with the stiff end, just fixed stand with fixing device a between through spout structural connection, the lower pulley roller with fixed stand between through leg joint, the upper pulley roller with fixing device a pass through leg joint.

In one embodiment of the present invention, the pulling rope is led out from the spring balancer, passes through the lower pulley roller, winds around the upper pulley roller, goes to the middle roller, and is fixed at the fixed end of the fixing device a.

In one embodiment of the present invention, the lifting device comprises a lifting column, a pulley a, a pulley b, a belt, a fixing device, a transmission case a, and an intermediate roller.

In an embodiment of the utility model, the vertical assembly in the side of pulley roller group of lift stand, belt pulley a, belt pulley b locate the both ends of lift stand respectively, and belt pulley b passes through the axle bed and links to each other fixedly with the draw-in groove of lift stand, belt pulley a passes through the keyway structure and links to each other fixedly with the both sides output of transmission case a.

In an embodiment of the present invention, the belt is disposed between the pulley grooves of the pulley a and the pulley b, one end of the fixing device is fixedly connected to the load platform, the other end of the fixing device is tightly connected to the moving upright, and the transmission case a is a lifter of a manual worm gear.

In an embodiment of the present invention, the transmission device includes a handle, a transmission box b, and a transmission rod, the handle and the transmission box b are fixedly connected to the front plate of the loading platform, and the transmission rod is disposed between the transmission box a and the transmission box b.

In an embodiment of the present invention, the transmission rod is a linear guide sliding block assembly, and two end faces of the transmission rod are provided with bases which are fixedly connected with the transmission box a and the transmission box b respectively.

In an embodiment of the present invention, the load platform is a cage type work platform, the load platform further includes a handrail and an anti-slip floor, and the load platform is assembled on the side surface of the fixing upright in parallel through the fixing device.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a mobile platform can one-man rely on the portable lift platform that muscle strength can easily operate, easy operation, the transportation is convenient, go up and down fast, complete machine compact structure simultaneously, safe and reliable, can use for a long time, this mobile platform has used the balancer device simultaneously, compare with the system that has spring element, the use of its balancer has produced the state of an approximate ideal, it is invariable to support the power of lift platform on whole high demand, no matter how high work platform, operator's muscle strength can both be supported. According to the prior art, the spring force increases with compression of the gas spring or with compression of the helical spring. Furthermore, due to the relatively simple mechanical design, there is excellent durability and reliability compared to gas springs, with a significant difference between the area where the temperature difference is large and the area where there is no safety problem.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

Fig. 1 is a view showing a raised state of a movable elevating platform.

Fig. 2 is a retracted state view of a movable lift platform.

Fig. 3 is a side view of a movable lift platform.

Fig. 4 is a component view of a movable lift platform.

Fig. 5 is a schematic diagram of the transmission of power from the transmission to the elevator in a mobile elevator platform.

FIG. 6 is a schematic diagram of a spring balancer and pull line arrangement for a mobile lift platform.

As shown in the figure: 1. lifting platform, 2, chassis, 21, fixed caster, 22, swivel caster, 23, fixed upright, 24, spring balancer, 25, fixing device a, 26, lower pulley roller, 27, upper pulley roller, 28, traction rope, 3, lifting device, 31, lifting upright, 32, belt pulley a, 33, 5 belt pulley b, 34, belt, 35, fixing device, 36, transmission case a, 37, middle roller, 4, transmission device, 41, handle, 42, transmission case b, 43, transmission rod, 5 and load-carrying platform.

Detailed Description

As shown in the figure, the embodiment provides a movable lifting platform, which comprises a lifting platform 1, wherein the lifting platform 1 consists of a chassis 2, a lifting device 3, a transmission device 4 and a loading platform 5;

the bottom end of the chassis 2 is provided with a spring balancer 24 and a traction rope 28, wherein a conical winding rope path is arranged inside the spring balancer 24, a bidirectional pulley roller group is arranged at the end face of the spring balancer 24, the traction rope 28 is fixedly wound in the conical winding rope path, and an inert spring is arranged between the tail end of the traction rope 28 and a positioning table of the spring balancer 24 for connection and fixation;

the loading platform 5 is fixedly connected with the lifting device 3, the lifting device 3 is connected with the chassis 2 through a middle roller 37 in the pulley roller group, and the transmission device 4 is fixedly connected with the front plate part of the loading platform 5.

Chassis 2 be equipped with truckle 21, swivel caster 22 and pulley roller group, the automatic locking structure that cooperation platform rises is equipped with in truckle 21 wherein, has guaranteed the stability of operation, swivel caster 22 be fixed in lift platform direction of advance's front end through the threaded support, can turn to in a flexible way, be favorable to the quick transportation of operation.

Specifically, a movable lifting platform 1 and a partially raised lifting device 3 are shown in fig. 1. The fixed caster wheels 21 can be synchronously locked at the rising moment of the loading platform 5 so as to ensure the safety of the loading platform; the swivel castors 22 ensure flexible transfer and transport of the machine. The load carrying platform 5 is mounted on the lifting device 3 and the vertical lifting of the platform can be operated by means of a handle 41 mounted on the transmission 4. Normally, the handle 41 has two operation modes, manual and electric, and incorporates an overload protection device to ensure safe operation of the operator.

Specifically, fig. 2 shows a state where the lifting platform 1 is lowered to the lowest position, and the whole device has a compact structure and is convenient to transport and move.

The pulley roller group comprises a fixed upright post 23, a fixing device a25, a lower pulley roller 26, an upper pulley roller 27 and a traction rope 28, wherein a fixing end 29 is integrally arranged on the fixing device a25, the fixed upright post 23 is connected with the fixing device a25 through a sliding groove structure, the lower pulley roller 26 is connected with the fixed upright post 23 through a support, and the upper pulley roller 27 is connected with the fixing device a25 through a support.

The pull cord 28 is led out from the spring balancer 24, passes through the lower pulley roller 26, is wound around the upper pulley roller 27, passes through the intermediate roller 37, and is finally fixed to the fixed end 29 of the fixing device a 25.

Specifically, FIG. 6 shows the arrangement of the spring balancer 24 and the pull cord 28. The lower pulley roller 26 is firmly connected to the fixed post 23, the upper pulley roller 27 is firmly connected to the fixing means a25, and the intermediate roller 37 is connected to the elevating means. The spring force provided by the spring balancer 24 is doubled by the bi-directional arrangement of the pulley roller sets.

If the pull-cord 28 of the spring balancer 24 breaks, the self-locking feature of the worm gear in the gear box a36 can effectively prevent the load carrying platform 5 from falling freely, which is equivalent to providing an additional brake.

The conical winding action within the spring balancer 24 provides a reciprocating force independent of the length of the wire rope, as the increasing diameter of the conical winding action relative to the progressive winding of the pull line 28 also steadily increases the compensation.

The lifting device 3 comprises a lifting upright post 31, a belt pulley a32, a belt pulley b33, a belt 34, a fixing device 35, a transmission case a36 and an intermediate roller 37.

The lifting upright column 31 is vertically assembled on the side face of the pulley roller column group, the belt pulley a32 and the belt pulley b33 are respectively arranged at two ends of the lifting upright column 31, the belt pulley b33 is fixedly connected with a clamping groove of the lifting upright column 31 through a shaft seat, and the belt pulley a32 is fixedly connected with output ends of two sides of the transmission case a36 through a key groove structure.

Specifically, fig. 4 shows the internal arrangement of the lifting device. The upper end 5 of the lifting upright post 31 is provided with a group of belt pulleys b33 which are connected with belt pulleys a32 at two sides of a transmission case a36 through two belts 34. The fixing device 35 has one end fixedly connected to the load platform 5 and the other end tightly connected to the lifting column 31, so that when the lifting device 3 is pulled to be lifted upwards, the load platform 5 moves upwards together with the lifting column.

The belt 34 is arranged between the pulley grooves of the pulley a32 and the pulley b33, one end of the fixing device 35 is fixedly connected with the load platform 5, and the other end of the fixing device is tightly connected to the lifting upright post 31, so that when the lifting device 3 is pulled to be lifted upwards, the load platform 5 moves upwards along with the lifting upright post, the transmission case a36 is a manual worm gear lifter, and meanwhile, the transmission case a36 is integrated with a self-locking characteristic to effectively prevent the load platform 5 from falling freely, which is equivalent to providing an additional brake.

In particular, fig. 5 shows how the lifting device 3 operates an upward movement (as indicated by the arrow). Fixing device a25 and fixed stand 23 zonulae occludens, fixing device a25 one end and belt 34 fixed connection, operator operating handle 41 rotates to transmit through transmission b42, transfer line 43 and drive transmission a36 and drive belt pulley a32 anticlockwise rotation, belt pulley a32 provides belt 34 an upwards power of promoting, thereby drive elevating gear 3 upward movement, load platform 5 passes through fixing device 35 and elevating gear 3 fixed connection, thereby load platform 5 also can be the upward movement together.

The transmission device 4 comprises a handle 41, a transmission box b42 and a transmission rod 43, wherein the handle 41 and the transmission box b42 are fixedly connected to the front plate of the load-bearing platform 5, and the transmission rod 43 is arranged between the transmission box a36 and the transmission box b 42.

Specifically, FIG. 3 illustrates a side view of the movable lift platform. The handle 41 and the transmission box b42 are fixedly connected on the front plate of the loading platform 5, power transmission is carried out through the transmission rod 43, and one end of the transmission rod 43 is connected with the transmission box a 36. The two side outputs of the transmission case a36 each have a pulley a32, the pulleys on one side are connected by a common belt 34, one on each side and a set of pulleys for safety reasons, the specific arrangement being shown in fig. 4.

In the figure it can be seen that the lower end of the frame of the chassis 2 is provided with a suspended spring balancer 24, which is secured to the lifting device 3 by a pull rope, as will be clearly explained with reference to figure 6. The spring balancer 24 compensates for a substantial portion of the force that must be applied by the spring force to facilitate manual lifting of the platform.

The transmission rod is a linear guide rail sliding block component, and two end faces of the transmission rod 43 are provided with bases 6 which are respectively fixedly connected with the transmission box a36 and the transmission box b 42.

The loading platform 5 is a cage type operation platform, the loading platform 5 further comprises an armrest and an anti-skid floor, and the loading platform 5 is assembled on the side surface of the fixed upright post 23 in parallel through a fixing device 35.

The working principle of the utility model is as follows: the novel mobile platform uses a conical spring balancer which is arranged in multiple layers, and the weight of a suspended object, namely the platform, people and tools on the platform, is compensated by the approximately constant tension of the springs in the spring balancer; and simultaneously, the lift force and the power of the whole traction rope are effectively improved through each winding of the pulley roller.

The handle operation part of the transmission device is positioned on the lifting platform, the transmission device is internally designed to adopt worm and gear transmission, the self-locking characteristic of the transmission device can prevent the telescopic rod from rotating, and meanwhile, the transmission device has a large transmission ratio. The handle part of the transmission device is further integrated with a safety clutch and a connecting device, the connecting device is provided with a square or hexagonal interface and can be used by an electric driving tool, and the impact hazard caused by sudden stop of a platform when an operator uses the electric tool can be avoided by using the safety clutch.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. A mobilizable lift platform which characterized in that: the lifting platform comprises a lifting platform (1), wherein the lifting platform (1) consists of a chassis (2), a lifting device (3), a transmission device (4) and a loading platform (5); a spring balancer (24) and a traction rope (28) are arranged at the bottom end of the chassis (2), wherein a conical winding rope path is arranged inside the spring balancer (24), a bidirectional pulley roller group is arranged at the end face of the spring balancer (24), the traction rope (28) is fixedly wound in the conical winding rope path, and an inert spring is arranged between the tail end of the traction rope (28) and a positioning table of the spring balancer (24) for connection and fixation; the load platform (5) is fixedly connected with the lifting device (3), the lifting device (3) is connected with the chassis (2) through a middle roller (37) in the pulley roller group, and the transmission device (4) is fixedly connected with the front plate part of the load platform (5).

2. The movable lift platform of claim 1, wherein: chassis (2) be equipped with truckle (21), swivel caster (22) and pulley roller group, wherein truckle (21) in be equipped with the automatic dead lock structure that the cooperation platform rises, swivel caster (22) be fixed in the front end of lift platform advancing direction through the screw thread support.

3. The movable lift platform of claim 2, wherein: the pulley roller group include fixed upright post (23), fixing device a (25), lower pulley roller (26), upper pulley roller (27), haulage rope (28), fixing device a (25) go up the integration and be equipped with stiff end (29), just fixed upright post (23) with fixing device a (25) between connect through the spout structure, lower pulley roller (26) with fixed upright post (23) between pass through the leg joint, upper pulley roller (27) with fixing device a (25) pass through the leg joint.

4. The movable lift platform of claim 3, wherein: the traction rope (28) is led out from the spring balancer (24), firstly passes through the lower pulley roller (26), is wound on the upper pulley roller (27), then passes through the middle roller (37), and is finally fixed at the fixed end (29) of the fixing device a (25).

5. The movable lift platform of claim 1, wherein: the lifting device (3) comprises a lifting upright post (31), a belt pulley a (32), a belt pulley b (33), a belt (34), a fixing device (35), a transmission case a (36) and an intermediate roller (37).

6. The movable lift platform of claim 5, wherein: the vertical assembly in the side of pulley roller group of lift stand (31), belt pulley a (32), belt pulley b (33) locate the both ends of lift stand (31) respectively, and belt pulley b (33) link to each other fixedly through the draw-in groove of axle bed with lift stand (31), belt pulley a (32) link to each other fixedly through the both sides output of keyway structure with transmission case a (36).

7. The movable lift platform of claim 5, wherein: the belt (34) is arranged between the wheel grooves of the belt pulley a (32) and the belt pulley b (33), one end of the fixing device (35) is fixedly connected with the loading platform (5), the other end of the fixing device is tightly connected to the lifting upright post (31), and the transmission case a (36) is a lifter of a manual worm gear.

8. The movable lift platform of claim 1, wherein: the transmission device (4) comprises a handle (41), a transmission box b (42) and a transmission rod (43), the handle (41) and the transmission box b (42) are fixedly connected to the front plate of the loading platform (5), and the transmission rod (43) is arranged between the transmission box a (36) and the transmission box b (42).

9. The movable lift platform of claim 8, wherein: the transmission rod is a linear guide rail sliding block assembly, and two end faces of the transmission rod (43) are provided with bases which are respectively and fixedly connected with the transmission box a (36) and the transmission box b (42).

10. The movable lift platform of claim 1, wherein: load platform (5) be cage operation platform, still include handrail and non-slip floor in load platform (5), load platform (5) pass through fixing device (35) and assemble in the side of fixed post (23) in parallel.