CN106564806B - Goods elevator - Google Patents

Abstract

The invention relates to a cargo elevator. It is used for lifting goods into a multi-layer three-dimensional storage, including a vertical column, including a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall are provided with Guide structures parallel to each other; a hanging basket, slidingly matched with the guiding structure and used for carrying the goods; a lifting mechanism, mounted on the vertical column and connected with the hanging basket, and used for driving the hanging basket along the The guide structure slides up and down. Since two gondolas are installed on one column at the same time, the working efficiency of the hoist is doubled. At the same time, two hanging baskets are arranged on both sides of the column opposite to each other, which enhances the balance of the column during the working process, increases the maximum height that the hanging basket can slide on the column, and is suitable for high-height multi-layer three-dimensional storage. It ensures that the column will not sway strongly due to the overturning moment, reducing operation and maintenance costs.

Description

cargo elevator

technical field

The invention relates to the technical field of automatic logistics storage and lifting equipment, in particular to a cargo hoist.

Background technique

In recent years, due to the rising cost of land transfer, labor costs and transportation costs, the use of upper space to replace flat multi-layer three-dimensional storage has become an inevitable trend of scientific and technological development. In order to reduce labor costs, realize drop-type transportation of multi-layered goods, and make better use of limited space in series, cargo elevators came into being. The cargo hoists in the existing multi-storey three-dimensional storage mostly use double-column (gantry-type) hoists or four-column (car-type) hoists. Set of equipment, the efficiency is very low, and it cannot meet the needs of multi-variety and multi-specification goods that need to be put in and out of the warehouse at the same time.

In recent years, a single-column cargo hoist with only one hanging basket has appeared. Two sets of equipment are installed in the same roadway to meet the lifting needs, but there are defects of low work efficiency and high cost.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a cargo elevator that can improve work efficiency and reduce costs.

A cargo hoist, used for lifting cargo into a multi-layer three-dimensional storage, is characterized in that it includes:

The upright column includes a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall are provided with mutually parallel guide structures along the height direction thereof;

a hanging basket, slidingly matched with the guide structure and used for carrying the goods;

The lifting mechanism is installed on the upright column and connected with the gondola, and is used for driving the gondola to slide up and down along the guide structure.

In one of the embodiments, the upright column is a hollow structure provided with an inner cavity, and the lifting mechanism includes a first lifting assembly and a second lifting assembly oppositely disposed;

The first lifting assembly includes a first tensioning pulley fixed on the top end of the first side wall, a first driving pulley fixed on the bottom end of the first side wall, located in the inner cavity and sleeved on the a first timing belt between the first tensioning pulley and the first driving pulley, and a first driver for driving the first driving pulley to rotate;

The second lifting assembly includes a second tensioning pulley fixed on the top end of the second side wall, a second driving pulley fixed on the bottom end of the second side wall, located in the inner cavity and sleeved on the A second timing belt between the second tensioning pulley and the second driving pulley, and a second driver for driving the second driving pulley to rotate.

In one embodiment, the first driver includes a first servo motor and a first reducer disposed at the bottom end of the column, and an output shaft of the first servo motor is connected to an input shaft of the first reducer , the output shaft of the first reducer is connected with the first driving wheel;

The second driver includes a second servo motor and a second reducer arranged at the bottom end of the column, the output shaft of the second servo motor is connected with the input shaft of the second reducer, the second reducer The output shaft is connected with the second driving wheel.

In one embodiment, the guide structure includes a first guide rail and a second guide rail arranged in parallel and extending from the top end of the upright column to the bottom end of the upright column.

In one of the embodiments, the hanging basket comprises a first sliding block slidably matched with the first guide rail, a second sliding block slidably matched with the second guide rail, connecting the first sliding block and the A mounting frame of the second sliding block, and a support member arranged on the mounting frame and used for carrying the goods.

In one embodiment, the support member includes a first baffle plate fixed on the mounting frame and perpendicular to the first guide rail, and a second baffle plate opposite and parallel to the first baffle plate, and several roller shafts connected between the first baffle and the second baffle and arranged at intervals.

In one of the embodiments, the first sliding block is provided with four eccentric guide wheels along the height direction thereof which are adapted to the first guide rail, and the second sliding block is provided with four eccentric guide wheels along the height direction thereof. Two concentric guide wheels matched with the second guide rail, and two eccentric guide wheels located between the two concentric guide wheels.

In one embodiment, the upright column further includes a third side wall and a fourth side wall arranged opposite to each other, and the third side wall and the fourth side wall are respectively connected to the first side wall and the second side Between the walls, the third side wall is spaced along its height direction with a number of balancing pieces, the outer contour of the balancing piece is an isosceles trapezoid, and the balancing piece includes a fixed piece fixed on the third side wall. A rod, a balance rod arranged in parallel with the fixed rod, and two connecting rods respectively connecting the fixed rod and the ends of the balance rod.

In one of the embodiments, the fourth side wall is provided with a stair frame for maintenance and inspection.

In one of the embodiments, it further includes a brake drop arrester mounted on the hanging basket and disposed opposite to the guide structure and connected to the lifting mechanism through a stop pin, the brake drop arrester comprising: :

a mounting seat, arranged on the hanging basket sliding along the guide structure;

A fixed wedge and a movable wedge, the movable wedge is slidably matched with the fixed wedge, the movable wedge is provided with a wear-resistant block in contact with the guide structure, and the stop pin is installed on the the end of the movable wedge; and

A first elastic mechanism and a second elastic mechanism, the first elastic mechanism is connected between the fixed wedge and the mounting seat, and the second elastic mechanism is connected between the movable wedge and the mounting seat. between;

Wherein, when the lifting mechanism is broken and the blocking pin loses the blocking function of the movable wedge, the first elastic mechanism pushes the movable wedge to slide and causes the wear-resistant block to be connected to the guide. At the same time, the second elastic mechanism presses the movable wedge against the guide structure through the fixed wedge, and the frictional force between the movable wedge and the guide structure gradually increases until the gondola stops falling.

In the cargo hoist provided by the present invention, since both the first side wall and the second side wall are provided with a guide structure, and a hanging basket is installed on the guide structure, therefore, two hanging baskets are installed on one column at the same time, and the hoist works Efficiency is doubled, and production and operating costs are reduced accordingly. At the same time, the two hanging baskets are arranged on both sides of the column opposite to each other, which enhances the balance of the column during the working process, increases the maximum height that the hanging basket can slide on the column, and is suitable for high-height multi-layer three-dimensional storage. It ensures that the column will not sway strongly due to the overturning moment, reducing operation and maintenance costs.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the cargo hoist;

Fig. 2 is the enlarged structural schematic diagram of A place in Fig. 1;

Fig. 3 is the plane structure schematic diagram of the cargo elevator;

Fig. 4 is the top view structure schematic diagram of the cargo elevator;

Figure 5 is a schematic diagram of the assembly structure of the hanging basket and the brake fall arrester in a certain state;

6 is a schematic diagram of the assembly structure of the hanging basket and the brake fall arrester in another state;

Fig. 7 is a perspective view of the three-dimensional structure schematic diagram of the brake fall arrester;

FIG. 8 is a schematic three-dimensional structure diagram of the brake fall arrester from another perspective;

Fig. 9 is the structural schematic diagram corresponding to the brake fall arrester and the linear guide rail;

Figure 10 is a schematic diagram of the structure corresponding to the brake fall arrester and the trapezoidal guide rail;

Figure 11 is a schematic diagram of the structure corresponding to the brake fall arrester and the circular guide rail;

Fig. 12 is a schematic diagram of the structure of the brake fall arrester corresponding to the V-shaped guide rail.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , a cargo hoist is used for lifting cargo into a multi-layer three-dimensional warehouse, the hoist includes a vertical column 100 , a hanging basket 200 and a lifting mechanism 300 . The column 100 is a hollow (hollow) cuboid structure. The column 100 includes a first side wall 110 and a second side wall 120 arranged oppositely, and a third side wall 130 and a fourth side wall 140 arranged oppositely. The third side wall 130 , the fourth side wall 140 are respectively connected between the first side wall 110 and the second side wall 120, and the first side wall 110, the second side wall 120, the third side wall 130 and the fourth side wall 140 together enclose The inner cavity 180 of the column 100 . The first side wall 110 and the second side wall 120 are provided with guide structures 170 that are parallel to each other. The hanging basket 200 is slidingly matched with the guiding structure 170. The lifting mechanism 300 is installed on the column 100 , and the lifting mechanism 300 is connected with the gondola 200 , and can drive the gondola 200 to slide up and down along the guide structure 170 .

Since both the first side wall 110 and the second side wall 120 are provided with the guide structure 170, the guide structure 170 is installed with the hanging basket 200, therefore, two hanging baskets 200 are installed on one column 100 at the same time, and the working efficiency of the hoist is improved. At the same time, the two hanging baskets 200 are oppositely arranged on both sides of the upright column 100, which enhances the balance of the upright column 100 in the working process, increases the maximum height that the hanging basket 200 can slide on the upright column 100, and can be used for heights. The high multi-layer three-dimensional storage ensures that the column 100 will not shake strongly due to the influence of the overturning moment, which reduces the operation and maintenance costs. In the prior art, only one hanging basket 200 is set on the upright column 100 , and the hanging basket 200 cooperates with the upright column 100 in an embracing manner. Due to this design method, in order to maintain the stability of the upright column 100 , it must be carried out on the top of the upright column 100 . Reinforcement treatment, if the height of the goods lifted exceeds six meters, the hanging basket 200 will shake when it starts or stops at the high position of the column 100. It can only be applied to the multi-storey three-dimensional storage with low height. The installation, commissioning and maintenance are very inconvenient, and the production and operation costs are high.

Referring to FIGS. 1 and 3 , the lifting mechanism 300 includes a first lifting assembly and a second lifting assembly disposed opposite to each other, the first lifting assembly is disposed on the first side wall 110 , and the second lifting assembly is disposed on the second side wall 120 , The first lifting assembly includes a first tensioning pulley 331 , a first driving pulley 321 , a first timing belt 311 and a first driver 340 . The first tensioning pulley 331 is fixed on the top end of the first side wall 110 , the first driving pulley 321 is fixed at the bottom end of the first side wall 110 , and the first timing belt 311 is sleeved and tensioned between the first tensioning pulley 331 and the Between the first driving wheels 321, the first side wall 110 is sandwiched in the first timing belt 311, and the first driver 340 is used to drive the first driving wheel 321 to rotate. Specifically, the first driver 340 includes a first servo motor 241 and the first reducer 342 , the output shaft of the first servo motor 241 is connected with the input shaft of the first reducer 342 , and the output shaft of the first reducer 342 is connected with the first driving wheel 321 .

Referring to FIGS. 1 and 3 , the second lifting assembly includes a second tensioning pulley 332 , a second driving pulley 322 , a second timing belt 312 and a second driver. The second tensioning pulley 332 is fixed on the top end of the second side wall 120 , the second driving pulley 322 is fixed on the bottom end of the second side wall 120 , and the second timing belt 312 is sleeved and tensioned between the second tensioning pulley 332 and the bottom end of the second side wall 120 . Between the second driving wheels 322, the second side wall 120 is sandwiched in the second timing belt 312, and the second driver is used to drive the second driving wheel 322 to rotate. Specifically, the second driver includes a second servo motor and a first Second reducer, the output shaft of the second servo motor is connected with the input shaft of the second reducer, and the output shaft of the second reducer is connected with the second driving wheel 322 .

1 and 3, the two hanging baskets 200 are respectively connected with the first timing belt 311 and the second timing belt 312. When the first timing belt 311 and the second timing belt 312 move up and down, the two hanging baskets 200 are driven. It slides up and down relative to the upright column 100 along the guide structure 170. Therefore, during the sliding process, the gondola 200 can lift the goods from the ground to each storage layer of the multi-layer three-dimensional The goods are delivered to the ground.

1 and 2, the guide structure 170 is a double-track structure, that is, the guide structure 170 includes a first guide rail 171 and a second guide rail 172. The first guide rail 171 and the second guide rail 172 extend along the height direction of the column 100. The first guide rail 171 and the second guide rail 172 are arranged on the outer surfaces of the first side wall 110 and the second side wall 120, the first guide rail 171 and the second guide rail 172 are parallel to each other, and the hanging basket 200 is installed across the first guide rail 171 and the second guide rail 172. on the second guide rail 172 .

Referring to FIG. 2 , the gondola 200 includes a first sliding block 210 , a second sliding block 220 , a mounting frame 230 and a support member 240 . The first sliding block 210 and the second sliding block 220 are arranged opposite to each other, the first sliding block 210 is slidingly matched with the first guide rail 171 , the second sliding block 220 is slidingly matched with the second sliding block 172 , and the mounting bracket 230 is installed on the first sliding block 210 And on the second sliding block 220 , the support member 240 is arranged on the mounting frame 230 . Specifically, the support member 240 includes a first baffle plate 241 , a second baffle plate 242 and several roller shafts 243 . The first baffle 241 is fixedly installed on the mounting frame 230 and is perpendicular to the first guide rail 171 , the second baffle 242 is opposite and parallel to the first baffle 241 , one end of the roller shaft 243 is connected to the first baffle 241 , and the roller The other end of the shaft 243 is connected to the second baffle plate 242 , and several roller shafts 243 are spaced apart from each other. The goods are directly loaded on the roller shaft 243 , and the first baffle 241 and the second baffle 242 limit the goods to prevent the goods from being thrown out of the gondola 200 . Through the rolling friction between the roller shaft 243 and the goods, the loading and unloading of the goods on the gondola 200 is facilitated, so that loading and unloading saves time and effort.

5 and 6, the first slider 210 is provided with four eccentric guide wheels 252, and the four eccentric guide wheels 252 are arranged along the height direction of the first slider 210 (ie, the extension direction of the first guide rail 171). The second slider 220 is provided with two concentric guide wheels 251 and two eccentric guide wheels 252. The concentric guide wheels 251 and the two eccentric guide wheels 252 are arranged along the height direction of the second slider 220 (ie the height of the second guide rail 172). extending direction) arrangement, two eccentric guide wheels 252 are located between two concentric guide wheels 251 . It can be understood that the functions of the first sliding block 210 and the second sliding block 220 are the same, and their positions can be interchanged.

Since the eccentric guide wheel 252 and the concentric guide wheel 251 are provided, the eccentric guide wheel 252 and the concentric guide wheel 251 slide along the first guide rail 171 and the second guide rail 172, thereby driving the first slider 210 and the second slider 220 to move, in other words , the eccentric guide wheel 252 and the concentric guide wheel 251 convert the sliding friction between the gondola 200 and the guide structure 170 into rolling friction, so that the friction force between the gondola 200 and the guide structure 170 is greatly reduced, and the performance of the gondola 200 is improved. The lifting speed is improved, the wear between the gondola 200 and the guide structure 170 is reduced, and the structural strength of the column 100 is ensured. At the same time, based on the movement track of the concentric guide wheel 251, the eccentric guide wheels 252 on the first slider 210 and the second slider 220 can adjust and correct the movement of the gondola 200, thus improving the movement of the gondola 200. The accuracy of the trajectory ensures that the moving trajectory of the gondola 200 is a straight line, reduces the shaking effect on the column 100 due to the irregular movement trajectory of the gondola 200 , and further reduces the wear between the gondola 200 and the column 100 .

Referring to FIGS. 1 and 4 , a plurality of balance members 150 are arranged on the third side wall 130 at intervals, and the plurality of balance members 150 are arranged along the height direction of the third side wall 130. The outer contour of the balance member 150 is an isosceles trapezoid. Of course, it can be It is understood that rectangular or other polygonal structures are also possible. Specifically, the balance member 150 includes a fixed rod 151 , a balance rod 152 and two connecting rods 153 . The fixing rod 151 is directly fixed on the third side wall 130, the balance rod 152 is located outside the third side wall 130 and keeps a certain distance from the third side wall 130, the balance rod 152 and the fixing rod 151 are parallel to each other, and the two are connected. The rods 153 are connected to the ends of the fixed rod 151 and the balance rod 152, respectively. Due to the provision of the balancer 150, the stability of the upright column 100 can be ensured when the height of the upright column 100 is relatively large, and the anti-overturning capability of the upright column 100 itself can be improved by the action of the weight of the balancer 150 itself.

Referring to FIGS. 1 and 4, further, a stair frame 160 is installed on the fourth side wall 140, and the staff can perform real-time inspection and maintenance on the hoist on the stair frame 160. At the same time, the stair frame 160 can also lift the column 100. To balance, the stability of the column 100 with a larger height is further enhanced.

Since the design mode of single column and double hanging baskets is adopted, that is, two hanging baskets 200 share one column 100 . The structure of the hoist is simple, and the two hanging baskets 200 obviously improve the working efficiency of the hoist. At the same time, it saves space, and the hoist can be installed and debugged in a narrow roadway. The two hanging baskets 200 can be controlled independently, their movements do not interfere with each other, the equipment cost is low, and one hoist can be used to replace the traditional two hoists.

Referring to FIGS. 5 and 6 , the hoist further includes a brake drop arrester 400 . The brake drop arrester 400 is installed in the middle of the first sliding block 210 and the second sliding block 220 , that is, one hanging basket 200 is installed with two Brake fall arrester 400. The brake fall arrester 400 is arranged opposite to the first guide rail 171 or the second guide rail 171, and is connected to the first synchronous belt 311 or the second synchronous belt 312 on the lifting mechanism 300 through the stop pin 500. The first synchronous belt 311 or the second synchronous belt 312 The two timing belts 312 are also lifting belts. In the first sliding block 210 , two eccentric guide wheels 252 are arranged above the brake drop arrester 400 , and the other two eccentric guide wheels 252 are arranged below the lock brake drop arrester 400 . In the second sliding block 220 , one concentric guide wheel 251 and one eccentric guide wheel 252 are located above the brake safety device 400 , and the other concentric guide wheel 251 and the other eccentric guide wheel 252 are located at the top of the brake safety device 400 . below.

Referring to FIGS. 7 and 8 , the brake fall arrester 400 includes a mounting seat 410 , a fixed wedge 430 , a movable wedge 420 , a first elastic mechanism 440 and a second elastic mechanism 450 . The mounting seat 410 is fixed on the first sliding block 210 and the second sliding block 220 , the movable wedge 420 is slidably matched with the fixed wedge 430 , and the movable wedge 420 is provided with a contact with the first guide rail 171 or the second guide rail 172 . The wear-resistant block 426 and the stop pin 500 are installed on the top of the movable wedge 420 . The first elastic mechanism 440 is provided between the fixed wedge 430 and the mounting seat 410 , and the second elastic mechanism 450 is provided between the movable wedge 420 and the mounting seat 410 . When the first synchronous belt 311 or the second synchronous belt 312 breaks (ie, when the lifting belt breaks), the blocking pin 500 will lose its blocking function to the movable wedge 420, and at this time, the first elastic mechanism 440 pushes the movable wedge 420 to slide The wear-resistant block 426 is brought into contact with the guide structure 170, the second elastic mechanism 450 presses the movable wedge 420 against the guide structure 170 through the fixed wedge 430, and the frictional force between the movable wedge 420 and the guide structure 170 gradually increases until the gondola 200 stops falling.

The longitudinal section of the mounting seat 410 is L-shaped, and the mounting seat 410 includes a first mounting body 411 and a second mounting body 412 , which are integrally connected and perpendicular to each other.

The first elastic mechanism 440 includes a first elastic member 441 and a tightening screw 442. One end of the first elastic member 441 is in contact with the other end of the movable wedge 420 away from the stop pin 500 (ie, the bottom of the movable wedge 420). The other end of the elastic member 441 is in contact with the tightening screw 442 , a screw hole is vertically opened on the first mounting body 411 , and the tightening screw 442 is installed in the screw hole. Specifically, the first elastic member 441 is a rectangular spring, and the rectangular spring generates elastic force in the vertical direction (ie, the direction of the elastic force is parallel to the first guide rail 171 or the second guide rail 172 ). When the tightening screw 442 is tightened, the first elastic member 441 is compressed between the movable wedge 420 and the tightening screw 442,

The second elastic mechanism 450 includes a second elastic member 451 and an equal-height screw 452. One end of the second elastic member 451 is connected to the fixing wedge 430, and the other end of the second elastic member 451 is connected to the equal-height screw 452. The equal-height screw 452 It is installed horizontally in the second mounting body 412 on the mounting seat 410 . Specifically, the second elastic member 451 is a butterfly spring, and the butterfly spring generates elastic force in the horizontal direction (ie, the elastic force direction is perpendicular to the first guide rail 171 or the second guide rail 172 ). When the movable wedge 420 continuously slides relative to the fixed wedge 430 , the movable wedge 420 continuously compresses the second elastic member 451 between the fixed wedge 430 and the equal-height screw 452 through the fixed wedge 430 .

Referring to FIGS. 7 and 8 , the number of the second elastic mechanisms 450 is two, and the connecting line between the two second elastic mechanisms 450 is parallel to the guide structure 170 . When the number of the second elastic mechanisms 450 increases, under the condition that the compression amount of the second elastic member 451 is the same, the pressure generated by the movable wedge 420 on the first guide rail 171 and the second guide rail 172 will increase, resulting in an increase in frictional force. The number of the second elastic mechanisms 450 may be appropriately increased or decreased according to actual needs (for example, the total weight of the gondola 200 and the goods, the friction coefficient of the wear-resistant block 426 , etc.).

The longitudinal cross-sectional contours of the fixed wedge 430 and the movable wedge 420 are both trapezoidal. The fixed wedge 430 includes a first abutting surface 431, a first wedge-shaped surface 432 and two first side surfaces 433. The first abutting surface 431 and the second The elastic piece 451 is in contact, the first wedge surface 432 is in contact with the movable wedge 420 and is opposite to the first abutting surface 431 , and the two first side surfaces 433 are parallel to each other and connected between the first abutting surface 431 and the first wedge surface 432 . After installation, there is an acute angle between the first wedge-shaped surface 432 and the vertical plane (ie, the first wedge-shaped surface 432 has a certain inclination).

The movable wedge block 420 includes a second abutting surface 421 , a second wedge-shaped surface 422 , two second side surfaces 423 , a top surface 424 and a bottom surface 425 . The wear-resistant blocks 426 are installed on the second abutting surface 421 , and there are a plurality of wear-resistant blocks 426 , which are evenly arranged on the second abutting surface 421 . The second wedge surface 422 is opposite to the second abutting surface 421 and forms a sliding fit relationship with the first wedge surface 432 . The two second side surfaces 423 are parallel to each other and are connected between the second abutting surface 421 and the second wedge surface 422 , the blocking pin 500 is installed on the top surface 424 , and the bottom surface 425 is in contact with the first elastic member 441 . After installation, there is also an acute angle between the second wedge-shaped surface 422 and the vertical plane (that is, the second wedge-shaped surface 422 has a certain inclination)

The two second side surfaces 423 of the movable wedge block 420 are respectively provided with guide grooves 423a, the guide grooves 423a are parallel to the second wedge-shaped surface 422, and L-shaped guide plates 460 are respectively fixed on the first side surfaces 433 of the fixed wedge block 430. , the L-shaped guide plate 460 is matched with the guide groove 423a. When the movable wedge 420 slides, the sliding direction is oblique upward, that is, the movable wedge 420 slides obliquely upward relative to the fixed wedge 430 along the first wedge-shaped surface 432 .

Since the cross-sectional size of the movable wedge block 420 gradually decreases from top to bottom, and the cross-sectional size of the fixed wedge block 430 gradually increases from top to bottom, when the first timing belt 311 or the second timing belt 312 breaks, the movable wedge block 420 When it starts to slide up obliquely, the movable wedge 420 produces both a vertical displacement and a horizontal displacement (that is, it approaches the first guide rail 171 and the second guide rail 172 ), and the horizontal displacement will cause the movable wedge 420 to guide the direction. The structures 170 are brought close together until they abut each other. During the continuous falling of the hanging basket 200 , under the combined action of the friction force between the wear-resistant block 426 and the guide structure 170 and the elastic force of the first elastic member 441 , the movable wedge block 420 will continue to slide upward relative to the mounting seat 410 . , and push the fixed wedge 430 to move toward the second mounting body 412 on the mounting seat 410 against the elastic force of the second elastic member 451, the second elastic member 451 is continuously compressed, and the elastic force generated by the second elastic member 451 will continue to increase, The abutting force and frictional force between the wear block 426 and the guide structure 170 will continue to increase. Therefore, as long as the gondola 200 is in a falling state, the frictional force between the gondola 200 and the guide structure 170 will gradually increase until the gravity of the gondola 200 and the goods is overcome, and finally the gondola 200 stops sliding.

During the fall prevention process of the hanging basket 200 , the brake and fall arrester 400 does not need to consume external energy, and the hanging basket 200 can be stopped from falling only by the friction force generated during the falling process, which simplifies the overall structure of the brake fall arrester 400 . At the same time, the process of stopping the hanging basket 200 from falling is a gradual process, there is a certain buffer time, and the first guide rail 171 or the second guide rail 172 will not be damaged. In the traditional fall arrester with external power, the braking force is suddenly generated, that is, the gondola 200 is "braking suddenly", and the holding force of the gondola 200 will eventually damage the guide structure 170, thereby affecting the guide structure 170. guidance accuracy.

Furthermore, due to the action of the second elastic member 451, when the frictional forces generated between the two brake and fall arresters 400 on the gondola 200 and the first guide rail 171 and the second guide rail 172 are not equal, the second elastic The component 451 will use its own elastic force to fine-tune the distance between the fixed wedge 430 and the mounting seat 410 . In this way, the friction between the two brake anti-falling devices 400 and the guide structure 170 is equalized, ensuring that the hanging basket 200 is evenly stressed during the falling process, protecting the accuracy of the first guide rail 171 and the second guide rail 172, and preventing the hanging basket The unbalanced force of 200 causes the column 100 to shake violently.

Further, in order to ensure the sliding flexibility of the movable wedge 420, the response speed of the brake fall arrester 400 is improved. A first needle roller row (not shown) is arranged on the first wedge-shaped surface 432 or the second wedge-shaped surface 422, and the friction between the fixed wedge block 430 and the movable wedge block 420 can be reduced by the rolling friction of the first needle roller row force to facilitate the upward movement of the movable wedge 420 relative to the fixed wedge 430 . The bottom surface 425 of the movable wedge 420 is also provided with a second needle roller row 470 , which is also used to reduce the frictional force between the movable wedge 420 and the first elastic mechanism 440 .

It is particularly worth mentioning that, under the condition that other components remain unchanged, only the shape of the movable wedge 420 and the wear-resistant block 426 can be changed to realize the compatibility of the brake and fall arrester 400 with different types of guide structures 170, which greatly improves the The scope of application of the brake fall arrester 400 is improved. Specifically, referring to FIG. 9 and FIG. 10 , when the guide structure 170 is a linear guide rail or a trapezoidal guide rail, the second abutting surface 421 and the wear-resistant block 426 on the movable wedge block 420 can be both flat; refer to 11, when the guide structure 170 is a circular guide rail, the second abutting surface 421 and the wear-resistant block 426 on the movable wedge 420 are both set as concave arc surfaces; referring to FIG. 12, when the guide structure 170 is In the case of a V-shaped guide rail, the second abutting surface 421 and the wear-resistant block 426 on the movable wedge block 420 are both set as convex V-shaped surfaces.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A cargo elevator for lifting cargo into a multi-layer three-dimensional storage, is characterized in that, comprising: The upright column includes a first side wall and a second side wall arranged oppositely, and the first side wall and the second side wall are provided with mutually parallel guide structures along the height direction thereof; a hanging basket, slidingly matched with the guide structure and used for carrying the goods; a lifting mechanism, mounted on the upright column and connected with the gondola, and used to drive the gondola to slide up and down along the guide structure; and A brake drop arrester, the brake drop arrester is connected to the lifting mechanism through a stop pin, and the lock brake drop arrester includes: a mounting seat, arranged on the hanging basket sliding along the guide structure; A fixed wedge and a movable wedge, the movable wedge is slidably matched with the fixed wedge, the movable wedge is provided with a wear-resistant block in contact with the guide structure, and the stop pin is installed on the the end of the movable wedge; and A first elastic mechanism and a second elastic mechanism, the first elastic mechanism is connected between the movable wedge and the mounting seat, and the second elastic mechanism is connected between the fixed wedge and the mounting seat. between; Wherein, when the lifting mechanism is broken and the blocking pin loses the blocking function of the movable wedge, the first elastic mechanism pushes the movable wedge to slide and causes the wear-resistant block to be connected to the guide. At the same time, the second elastic mechanism presses the movable wedge against the guide structure through the fixed wedge, and the frictional force between the movable wedge and the guide structure gradually increases until the gondola stops falling. 2. The cargo hoisting machine according to claim 1, wherein the upright column is a hollow structure provided with an inner cavity, and the hoisting mechanism comprises a first hoisting assembly and a second hoisting assembly which are oppositely arranged; The first lifting assembly includes a first tensioning pulley fixed on the top end of the first side wall, a first driving pulley fixed on the bottom end of the first side wall, located in the inner cavity and sleeved on the a first timing belt between the first tensioning pulley and the first driving pulley, and a first driver for driving the first driving pulley to rotate; The second lifting assembly includes a second tensioning pulley fixed on the top end of the second side wall, a second driving pulley fixed on the bottom end of the second side wall, located in the inner cavity and sleeved on the A second timing belt between the second tensioning pulley and the second driving pulley, and a second driver for driving the second driving pulley to rotate. 3 . The cargo hoist according to claim 2 , wherein the first driver comprises a first servo motor and a first reducer arranged at the bottom end of the upright column, and the output shaft of the first servo motor is connected to 3 . the input shaft of the first reducer is connected, and the output shaft of the first reducer is connected with the first driving wheel; The second driver includes a second servo motor and a second reducer arranged at the bottom end of the column, the output shaft of the second servo motor is connected with the input shaft of the second reducer, the second reducer The output shaft is connected with the second driving wheel. 4. The cargo elevator according to claim 1, wherein the guide structure comprises a first guide rail and a second guide rail which are arranged in parallel and extend from the top end of the upright column to the bottom end of the upright column. 5 . The cargo elevator according to claim 4 , wherein the hanging basket comprises a first sliding block slidably matched with the first guide rail, a second sliding block slidably matched with the second guide rail, A mounting frame connecting the first sliding block and the second sliding block, and a support member arranged on the mounting frame and used for carrying the goods. 6 . The cargo elevator according to claim 5 , wherein the support member comprises a first baffle plate fixed on the mounting frame and perpendicular to the first guide rail, and the first baffle plate and the first baffle plate. 7 . A second baffle plate opposite and arranged in parallel, and several roller shafts connected between the first baffle plate and the second baffle plate and arranged at intervals. 7 . The cargo elevator according to claim 5 , wherein the first sliding block is provided with four eccentric guide wheels adapted to the first guide rail along its height direction, and the second sliding block is provided with four eccentric guide wheels. The slider is provided with two concentric guide wheels matched with the second guide rail along its height direction, and two eccentric guide wheels located between the two concentric guide wheels. 8 . The cargo elevator according to claim 1 , wherein the upright column further comprises a third side wall and a fourth side wall which are arranged opposite to each other, and the third side wall and the fourth side wall are respectively connected to 8 . Between the first side wall and the second side wall, the third side wall is spaced along its height direction with a number of balancing pieces, the outer contour of the balancing piece is an isosceles trapezoid, and the balancing piece includes a fixed A fixed rod on the third side wall, a balance rod arranged in parallel with the fixed rod, and two connecting rods respectively connecting the fixed rod and the ends of the balance rod. 9 . The cargo elevator according to claim 8 , wherein the fourth side wall is provided with a stair frame for maintenance and inspection. 10 . 10. The cargo elevator according to any one of claims 1 to 9, wherein the second elastic member is a butterfly spring.

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