CN104310267A - Small-amplitude synchronous lifting platform - Google Patents

Abstract

The invention discloses a movable synchronous lifting platform, which aims to realize the stable rise and fall of goods, and can be applied to the research and development of fast loading and unloading devices for goods. The invention includes: a chassis 1, a loading plate 19, a lifting drive motor 4, Motor coupling 5, bidirectional output reducer 6, first reducer coupling 3-1, first transmission shaft 2-1, first transmission mechanism, second transmission mechanism 101-1, second reducer coupling device 3-2, the second transmission shaft 2-2, the second transmission mechanism 101-2; also includes eight longitudinally positioned shrink frames 10 and four groups of driven roller groups 9, and the lifting drive motor 4 is the first transmission mechanism 101- 1 and the second transmission mechanism 101-2 provide power to realize the lifting and lowering of goods by the first transmission mechanism 101-1 and the second transmission mechanism 101-2. The invention overcomes the shortcomings of the existing hydraulic lifting platform, such as large vibration, large deformation under load conditions, and sensitivity to sudden loads. The lifting platform not only has the characteristics of high stability and synchronization, but also has low cost and high efficiency. Features, can be applied to the research and development of fast loading and unloading equipment.

Description

Small amplitude synchronous lifting platform

technical field

The invention relates to material handling equipment, in particular to a small-amplitude synchronous lifting platform used for lifting and lowering containers, brackets and pallets.

Background technique

At present, the loading and unloading equipment of existing goods, brackets and pallets generally adopts gantry cranes and forklifts. When using a gantry crane for cargo loading and unloading, precise positioning is required, and in order to prevent danger due to shaking during cargo hoisting, the hoisting speed is very slow. The purchase, use and maintenance costs of the equipment used are very high; when the forklift is used for loading and unloading goods, the carrying capacity of the forklift is small, and multiple forklifts are required to cooperate with each other to carry it at the same time. Dangers are prone to occur during the operation, and labor costs and equipment use and maintenance costs Also very high. If reorganization and loading and unloading are carried out, a large number of gantry cranes and forklifts need to be purchased. The purchase cost is high and the floor space is large. Neither of these two methods can meet the requirements of reorganization and fast simultaneous loading and unloading of freight vehicles in the future. At present, fast and automatic cargo handling equipment for freight vehicles is still in a blank stage at home and abroad. In order to meet the needs of future freight vehicles for fast, automated, and low-cost loading and unloading systems, it is urgent to develop fast cargo handling equipment for freight vehicles. In order to reduce the operational difficulty of the fast cargo handling equipment, the movable synchronous lifting device provided by the present invention can meet the market demand for the fast cargo handling equipment.

Contents of the invention

The invention overcomes the deficiencies in the prior art and provides a small amplitude synchronous lifting platform.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

A small-amplitude synchronous lifting platform with a symmetrical structure, which includes: an underframe 1, a loading plate 19, a lifting drive motor 4, a motor coupling 5, a bidirectional output reducer 6, and a first reducer coupling 3- 1. The first transmission shaft 2-1, the first transmission mechanism 101-1, the second reducer coupling 3-2, the second transmission shaft 2-2, the second transmission mechanism 101-2, and eight longitudinal Locate the retractable frame 10 and four groups of driven roller groups 9;

The underframe 1 is a U-shaped structure symmetrical to the center line;

Among them: the lifting drive motor 4 and the bidirectional output reducer 6 are installed on the chassis 1, the output shaft of the lifting drive motor 4 is connected to the input end of the motor coupling 5, and the output end of the motor coupling 5 is connected to the bidirectional output reducer 6, one output end of the two-way output reducer 6 is connected to one end of the first transmission shaft 2-1, and the other end of the first transmission shaft 2-1 is connected to the first transmission mechanism 101-1; the two-way output reducer 6 The other output end is connected to one end of the second transmission shaft 2-2, and the other end of the second transmission shaft 2-2 is connected to the second transmission mechanism 101-2; the loading plate 19 is installed on the first transmission mechanism 101-1 and the second transmission mechanism The top of the transmission mechanism 101-2;

The first transmission mechanism 101-1 includes: a first transmission shaft coupling 7-1, a first steering reducer 8-1, a first lead screw coupling 11-1, a first lead screw 14-1 , the first front drive block 13-1, the first rear drive block 13-2, the first lifting block chain 30-1, the second lifting block chain 30-2; one end of the first transmission shaft coupling 7-1 Connect the first transmission shaft 2-1, and its other end is connected with the input end of the first steering reducer 8-1, the first steering reducer 8-1 is installed on the chassis 1, the first steering reducer 8-1 The output end is connected with the first lead screw 14-1 through the first lead screw coupling 11-1, the first lead screw 14-1 is installed on the two first lead screw bearing blocks 21, and the two first lead screw The bearing block 21 is installed on the chassis 1, the first front drive block 13-1 and the first rear drive block 13-2 are threaded with the first lead screw 14-1, and the first front drive block 13-1 is installed On the underframe 1, it is connected with the lower shaft 17-1 of the lifting block at one end of the first lifting block chain 30-1 and the lower shaft 17-3 of the lifting block at one end of the second lifting block chain 30-2. The lower shaft 17-2 of the lifting block at the other end of the block chain 30-1 and the lower shaft 17-4 of the lifting block at the other end of the second lifting block chain 30-1 are connected with the first rear drive block 13-2 simultaneously, the first Both the lifting block chain 30-1 and the second lifting block chain 30-2 are installed on the chassis;

The second transmission mechanism 101-2 includes: a second transmission shaft coupling 7-2, a second steering reducer 8-2, a second lead screw coupling 11-2, and a second lead screw 14-2 , the second front drive block 13-3, the second rear drive block 13-4, the third lifting block chain 30-3 and the fourth lifting block chain 30-4;

The composition and assembly relationship of the second transmission mechanism 101-2 is exactly the same as that of the first transmission mechanism 101-1; the second transmission mechanism 101-2 and the first transmission mechanism 101-1 are relatively The line of symmetry of 1 is symmetrically installed on the chassis 1;

The first lifting block chain 30-1, the second lifting block chain 30-2, the third lifting block chain 30-3 and the fourth lifting block chain 30-4 have identical Composition and assembly structures;

The first lifting block chain 30-1 is composed of the lifting block 15, the lower driven wheel 16-1 of the lifting block, the upper driven wheel 16-2 of the lifting block, the lower shaft 17 of the lifting block, the upper shaft 20 of the lifting block, and the locking nut 22. The upper sleeve 23, the lower shaft end buckle cover 24 of the lifting block, the bearing wheel 25 and the lower sleeve 26 are composed of several lifting blocks 15 alternately hinged through the upper shaft 20 of the lifting block and the lower shaft 17 of the lifting block. Two The upper ends of the lifting blocks 15 are hinged by the upper shaft 20 of the lifting block, the upper driven wheel 16-2 of the lifting block is positioned and installed on the upper shaft 20 of the lifting block through the upper sleeve 23, and the two ends of the upper shaft 20 of the lifting block are clamped with nuts 22 locking; the lower ends of the two lifting blocks 15 are hinged through the lower shaft 17 of the lifting block, the lower driven wheel 16-1 of the lifting block is positioned on the lower shaft 17 of the lifting block through the lower sleeve 26, and the lower shaft 17 of the lifting block The bearing wheel 25 is installed at the shaft end of the shaft end and is positioned with the lower shaft end buckle cover 24 of the lifting block, and the lower shaft end buckle cover 24 of the lifting block is fixed with the lower shaft 17 of the lifting block;

The lifting block driven wheel 16-2 on the lifting block upper shaft 20 of the first lifting block chain 30-1 is always tangent to the bottom surface of the loading plate 19, and the second lifting block chain 30-2, the The lifting block driven wheel on the lifting block upper shaft of the third lifting block chain 30-3 and the fourth lifting block chain 30-4 is always tangent to the bottom surface of the loading plate 19;

The eight longitudinal positioning shrink frames 10 are divided into two groups on average, and the four longitudinal positioning shrink frames 10 in each group are installed on the four corners of the loading plate 19 respectively, fixedly connected with the loading plate 19, and longitudinally positioned The lower end of the shrink frame 10 is fixedly connected with the bottom frame 1;

The four sets of driven roller sets 9 are installed on the underframe 1 and are located on both sides of the first transmission mechanism 101-1 and the two second transmission mechanisms for supporting the loading plate 19, and each set of driven wheel sets 9 is provided with Seven driven wheels 9-1.

The two ends of the driven roller shaft 9-1 are installed in the driven roller groove of the bottom frame 1 through bearings, and the driven wheel bearing buckle cover 18 buckles the driven wheel shaft 9-1 for positioning, and is installed and fixed on the bottom frame with screws. Rack 1.

Due to the adoption of the above technical solution, a small-amplitude synchronous lifting platform provided by the present invention has the following beneficial effects:

The present invention takes the use of existing hardware conditions as the premise, takes low cost as the concept, and takes time-saving, high efficiency, and automation as the basic principles, and overcomes the large vibration, large deformation under load-bearing conditions, slow response speed, and problems of the existing hydraulic lifting platform. The shortcoming of being sensitive to abrupt loads, the present invention has high stability, synchronization, high rigidity, small deformation, strong controllability and fast response during use. The system structure of the present invention is simple, the overall manufacturing cost is low, and compared with the hydraulic structure, it has the advantages of high efficiency, energy saving and environmental protection. The safety of lifting heavy objects. The invention has the advantages of compact volume and structure, strong controllability and high safety, and is very suitable for small-scale synchronous lifting work of fast loading and unloading equipment.

Description of drawings

Fig. 1. is the front view of a small movable synchronous lifting platform of the present invention;

Fig. 2 is a top view of a small movable synchronous lifting platform of the present invention;

Fig. 3. is 1-A, 1-B partial enlarged view in Fig. 2;

Figure 4. is a partial enlarged view of 1-C in Figure 2, and a cross-sectional view of B-B;

Figure 5. is a 1-D partial enlarged view in Figure 2, a C-C cross-sectional view

Figure 6. Partial enlarged view of 7-A and 7-B in Figure 1;

Figure 7. is a partial enlarged view of 1-E in Figure 2, a D-D sectional view;

Figure 8. Partial enlargement of 1-F in Figure 2.

Detailed ways

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

A small amplitude synchronous lifting platform, as shown in Figure 1 and Figure 2, is a symmetrical structure, which includes: an underframe 1, a loading plate 19, a lifting drive motor 4, a motor coupling 5, and a bidirectional output reducer 6 , the first reducer coupling 3-1, the first transmission shaft 2-1, the first transmission mechanism 101-1, the second reducer coupling 3-2, the second transmission shaft 2-2, the second transmission Mechanism 101-2; also includes eight longitudinally positioned retractable frames 10 and four sets of driven roller groups 9;

The underframe 1 is a U-shaped structure symmetrical to the center line;

Among them: the lifting drive motor 4 and the bidirectional output reducer 6 are installed on the chassis 1, the output shaft of the lifting drive motor 4 is connected to the input end of the motor coupling 5, and the output end of the motor coupling 5 is connected to the bidirectional output reducer 6, one output end of the two-way output reducer 6 is connected to one end of the first transmission shaft 2-1, and the other end of the first transmission shaft 2-1 is connected to the first transmission mechanism 101-1; the two-way output reducer 6 The other output end is connected to one end of the second transmission shaft 2-2, and the other end of the second transmission shaft 2-2 is connected to the second transmission mechanism 101-2; the loading plate 19 is installed on the first transmission mechanism 101-1 and the second transmission mechanism The top of the transmission mechanism 101-2;

As shown in Figures 1-5, the first transmission mechanism 101-1 includes: the first transmission shaft coupling 7-1, the first steering reducer 8-1, the first screw coupling 11- 1. The first lead screw 14-1, the first front drive block 13-1, the first rear drive block 13-2, the first lifting block chain 30-1, the second lifting block chain 30-2; the first transmission One end of the shaft coupling 7-1 is connected to the first transmission shaft 2-1, and the other end is connected to the input end of the first steering reducer 8-1, and the first steering reducer 8-1 is installed on the chassis 1. The output end of the first steering reducer 8-1 is connected with the first lead screw 14-1 through the first lead screw coupling 11-1; as shown in Figure 1, the first lead screw 14-1 is installed on two On the first leading screw bearing block 21, two first leading screw bearing blocks 21 are installed on the chassis 1 and fixed with bolts, the first front drive block 13-1 and the first rear drive block (13-2) are all connected with The first leading screw 14-1 is threaded, and the first front drive block 13-1 is installed on the underframe 1, and simultaneously with the lifting block lower shaft 17-1 and the second lifting block at one end of the first lifting block chain 30-1. The lower shaft 17-3 of the lifting block at one end of the block chain 30-2 is connected, the lower shaft 17-2 of the lifting block at the other end of the first lifting block chain 30-1 and the lower shaft 17-2 of the other end of the second lifting block chain 30-1. The shaft 17-4 is connected with the first rear drive block 13-2 at the same time, and the first lifting block chain 30-1 and the second lifting block chain 30-2 are installed on the chassis;

As shown in Figure 2, the second transmission mechanism 101-2 includes: a second transmission shaft coupling 7-2, a second steering reducer 8-2, a second screw coupling 11-2, a second Two leading screws 14-2, the second front drive block 13-3, the second rear drive block 13-4, the third lifting block chain 30-3 and the fourth lifting block chain 30-4;

The composition and assembly relationship of the second transmission mechanism 101-2 is exactly the same as that of the first transmission mechanism 101-1; the second transmission mechanism 101-2 and the first transmission mechanism 101-1 are relatively 1 is symmetrically installed on the chassis 1; therefore, the composition and assembly relationship of the second transmission mechanism 101-2 will be omitted here.

The first lifting block chain 30-1, the second lifting block chain 30-2, the third lifting block chain 30-3 and the fourth lifting block chain 30-4 have identical Composition and assembly structures;

As shown in Figure 4 and Figure 5, the first lifting block chain 30-1 is composed of the lifting block 15, the lower driven wheel 16-1 of the lifting block, the upper driven wheel 16-2 of the lifting block, the lower shaft 17 of the lifting block, The upper shaft 20 of the lifting block, the clamping nut 22, the upper sleeve 23, the lower shaft end cover 24 of the lifting block, the bearing wheel 25 and the lower sleeve 26 are composed of several lifting blocks 15 passing through the upper shaft 20 of the lifting block and the lifting block The lower shaft 17 is alternately hinged, and the upper ends of the two lifting blocks 15 are hinged through the upper shaft 20 of the lifting block. The upper driven wheel 16-2 of the lifting block is positioned and installed on the upper shaft 20 of the lifting block through the upper sleeve 23. The lifting block Both ends of the upper shaft 20 are locked with clamping nuts 22; the lower ends of the two lifting blocks 15 are hinged through the lower shaft 17 of the lifting block, and the lower driven wheel 16-1 of the lifting block is positioned and installed under the lifting block through the lower sleeve 26 On the shaft 17, the shaft end of the lifting block lower shaft 17 is equipped with a bearing wheel 25 and is positioned with the lower shaft end buckle cover 24 of the lifting block, and the lower shaft end buckle cover 24 of the lifting block is fixed with the lower shaft 17 of the lifting block with hexagon socket screws;

The lifting block driven wheel (16-2) on the lifting block upper shaft (20) of the first lifting block chain 30-1 is always tangent to the bottom surface of the loading plate (19), and the second lifting block The driven wheel of the lifting block on the upper shaft of the lifting block of the chain 30-2, the third lifting block chain 30-3 and the fourth lifting block chain 30-4 is always tangent to the bottom surface of the loading plate 19 ;

As shown in Fig. 1, Fig. 2 and Fig. 6, the eight longitudinally positioned shrinkable frames 10 are divided into two groups on average, and the four longitudinally positioned shrinkable frames 10 in each group are respectively installed on the four corners of the loading plate 19 On the top, it is fixed with the loading plate 19 with hexagon socket head bolts, and the lower end of the longitudinal positioning shrink frame 10 is connected with the bottom frame 1 with screws;

As shown in Figure 1, the four groups of driven rollers are installed on the underframe 1 on both sides of the first transmission mechanism 101-1 and the second transmission mechanism, for supporting the loading plate, each group of driven wheels 9 There are seven driven wheels 9-1;

As shown in Figure 1 and Figure 7, the two ends of the driven roller shaft 9-1 are installed in the driven roller groove of the chassis 1 through bearings, and the driven wheel bearing buckle cover 18 buckles the driven wheel shaft 9-1. Hold the position, and install and fix it on the chassis 1 with screws.

The working principle of the present invention is: the lifting drive motor 4 drives the two-way output reducer 6 to rotate, drives the first transmission shaft 2-1 and the second transmission shaft 2-2 to rotate, thereby drives the first steering reducer 8-1 and the second The steering reducer 8-2 rotates, the first steering reducer 8-1 and the second steering reducer 8-2 drive the first leading screw 14-1 and the second leading screw 14-2 to rotate respectively, and the first front drive block 13-1 and the first rear drive block 13-2 move toward or oppositely under the effect of the first leading screw 14-1, and the second front drive block 13-3 and the first rear drive block 13-4 Under the action of the second lead screw 14-2, it moves towards or away from each other, so that the first-fourth lifting block groups synchronously drive the loading plate 19 up and down.

Claims (2)

1. A small amplitude synchronous lifting platform is a symmetrical structure, which includes: chassis (1), loading plate (19), lifting drive motor (4), motor coupling (5), bidirectional output reducer (6), the first reducer coupling (3-1), the first transmission shaft (2-1), the first transmission mechanism (101-1), the second reducer coupling (3-2), The second transmission shaft (2-2), the second transmission mechanism (101-2), also includes eight longitudinally positioned shrink frames (10) and four groups of driven roller groups (9); The underframe (1) is a U-shaped structure symmetrical to the centerline; Among them: the lifting drive motor (4) and the bidirectional output reducer (6) are installed on the chassis (1), the output shaft of the lifting drive motor (4) is connected to the input end of the motor coupling (5), and the motor coupling The output end of the device (5) is connected to the input end of the two-way output reducer (6), and one output end of the two-way output reducer (6) is connected to one end of the first transmission shaft (2-1), and the first transmission shaft (2- The other end of 1) is connected to the first transmission mechanism (101-1); the other output end of the bidirectional output reducer (6) is connected to one end of the second transmission shaft (2-2), and the second transmission shaft (2-2) The other end of the second transmission mechanism (101-2); the loading plate (19) is installed on the first transmission mechanism (101-1) and the second transmission mechanism (101-2); The first transmission mechanism (101-1) includes: a first transmission shaft coupling (7-1), a first steering reducer (8-1), a first lead screw coupling (11-1) , the first lead screw (14-1), the first front drive block (13-1), the first rear drive block (13-2), the first lifting block chain (30-1), the second lifting block chain (30-2); one end of the first transmission shaft coupling (7-1) is connected to the first transmission shaft (2-1), and its other end is connected with the input end of the first steering reducer (8-1), The first steering reducer (8-1) is installed on the underframe (1), and the output end of the first steering reducer (8-1) is connected with the first lead screw through the first lead screw coupling (11-1) (14-1) are connected, the first screw (14-1) is installed on the two first screw bearings (21), and the two first screw bearings (21) are installed on the chassis (1) Above, the first front drive block (13-1) and the first rear drive block (13-2) are threaded with the first lead screw (14-1), and the first front drive block (13-1) is installed On the chassis (1), and simultaneously with the lifting block lower shaft (17-1) of the first lifting block chain (30-1) one end and the lifting block lower shaft (17-1) of the second lifting block chain (30-2) one end ( 17-3) are connected, the lower shaft (17-2) of the lifting block at the other end of the first lifting block chain (30-1) and the lower shaft (17-2) of the lifting block at the other end of the second lifting block chain (30-1) 4) At the same time, it is connected with the first rear drive stopper (13-2), and both the first lifting block chain (30-1) and the second lifting block chain (30-2) are installed on the chassis; The second transmission mechanism (101-2) includes: a second transmission shaft coupling (7-2), a second steering reducer (8-2), a second screw coupling (11-2) , the second lead screw (14-2), the second front drive block (13-3), the second rear drive block (13-4), the third lifting block chain (30-3) and the fourth lifting block chain (30-4); The composition and assembly relationship of the second transmission mechanism (101-2) is exactly the same as that of the first transmission mechanism (101-1); the second transmission mechanism (101-2) is identical to the first transmission mechanism ( 101-1) Symmetrically installed on the chassis (1) with respect to the line of symmetry of the chassis (1); The first lifting block chain (30-1), the second lifting block chain (30-2), the third lifting block chain (30-3) and the fourth lifting block chain (30-4) have exactly the same composition and assembly structure; The first lifting block chain (30-1) is composed of the lifting block (15), the lower driven wheel (16-1) of the lifting block, the upper driven wheel (16-2) of the lifting block, the lower shaft (17) of the lifting block , the lifting block upper shaft (20), the clamping nut (22), the upper sleeve (23), the lower shaft end buckle cover of the lifting block (24), the bearing wheel (25) and the lower sleeve (26), consisting of several Two lifting blocks (15) are alternately hinged by the upper shaft (20) of the lifting block and the lower shaft (17) of the lifting block. The upper ends of the two lifting blocks (15) are hinged by the upper shaft (20) of the lifting block. The upper driven wheel (16-2) is positioned and installed on the upper shaft (20) of the lifting block through the upper sleeve (23), and the two ends of the upper shaft (20) of the lifting block are locked with clamping nuts (22); the two lifting blocks The lower ends of (15) are hinged through the lower shaft (17) of the lifting block, and the lower driven wheel (16-1) of the lifting block is positioned and installed on the lower shaft (17) of the lifting block through the lower sleeve (26). The shaft end of the shaft (17) is equipped with a bearing wheel (25) and is positioned with the lower shaft end buckle cover (24) of the lifting block, and the lower shaft end buckle cover (24) of the lifting block is fixed with the lower shaft (17) of the lifting block; The lifting block driven wheel (16-2) on the lifting block upper shaft (20) of the first lifting block chain (30-1) is always tangent to the bottom surface of the loading plate (19), and the second Lifting block chain (30-2), described the 3rd lifting block chain (30-3) and described 4th lifting block chain (30-4) the lifting block driven wheel on the lifting block upper shaft is all always with The bottom surface of the loading plate (19) is tangent; The eight longitudinal positioning contraction frames (10) are equally divided into two groups, and the four longitudinal positioning contraction frames (10) in each group are installed on four corners of the loading plate (19) respectively, and are connected with the loading plate (19) fixedly connected, the lower end of the longitudinal positioning shrinkage frame (10) is fixedly connected with the underframe (1); The four sets of driven roller sets (9) are installed on the underframe (1) on both sides of the first transmission mechanism (101-1) and the two second transmission mechanisms for supporting the loading plate (19), Each driven wheel group (9) is provided with seven driven wheels (9-1). 2. A small amplitude synchronous lifting platform according to claim 1, characterized in that: both ends of the driven roller shaft (9-1) are installed in the driven roller groove of the chassis (1) through bearings , the driven wheel bearing cover (18) fastens the location of the driven wheel shaft (9-1), and is installed and fixed on the chassis (1) with screws.