CN113247814A - Telescopic device, building and goods conveying system thereof - Google Patents

Abstract

The present disclosure relates to a telescopic device, a building and a cargo conveying system thereof. This telescoping device is including cutting fork mechanism, actuating mechanism and base, cut the one end of fork mechanism with the base links to each other, and the other end is the expansion end, is provided with the removal mount pad on the expansion end, cuts the fork mechanism and has cut the fork subassembly, cuts the fork subassembly and cuts the fork including mutual articulated first scissors fork and second, actuating mechanism install in the base, cut the fork mechanism still include fixed mounting seat and intermeshing's first gear and second gear, fixed mounting seat is fixed in the base, and first gear and second gear rotationally install in fixed mounting seat, and the one end of first scissors fork and first gear are fixed to be continuous, and the one end of second scissors fork and second gear are fixed to be continuous, and actuating mechanism can drive first gear or second gear rotation to realize cutting the flexible of fork subassembly. The telescopic device is simple in structure and good in stability, and when the telescopic device is in the retraction position, the whole telescopic device occupies a small space.

Description

Telescopic device, building and goods conveying system thereof

Technical Field

The disclosure relates to the technical field of telescopic adjusting equipment, in particular to a telescopic device, a building and a cargo conveying system of the building.

Background

In related art telescopic devices, the drive mechanism is typically mounted at a link of a linkage mechanism of the telescopic device. When the lifting mechanism works, the driving mechanism and the related electric connecting line can lift along with the connecting rod mechanism. In consideration of electrical specifications, the telescopic device may be structurally complicated by avoiding the situation that the wiring interferes with other parts or the wiring is wound around itself. In addition, in order to avoid the interference of the driving mechanism with other parts in the movement process, the structure of the telescopic device can be complicated, and in the related art, the stability of the telescopic device in the operation process is poor, which is not beneficial to the stable conveying of goods.

Disclosure of Invention

The invention aims to provide a telescopic device, a building and a cargo conveying system of the building.

In order to achieve the above object, the present disclosure provides a telescopic device, including a scissor mechanism, a driving mechanism, and a base, wherein one end of the scissor mechanism is connected to the base, the other end of the scissor mechanism is a movable end, a movable mounting seat is disposed on the movable end, the scissor mechanism has a scissor assembly, the scissor assembly includes a first scissor and a second scissor hinged to each other, the driving mechanism is mounted to the base, the scissor mechanism further includes a fixed mounting seat, and a first gear and a second gear engaged with each other, the fixed mounting seat is fixed to the base, the first gear and the second gear are rotatably mounted to the fixed mounting seat, and one end of the first scissor is fixedly connected to the first gear, one end of the second scissor is fixedly connected to the second gear, the driving mechanism can drive the first gear or the second gear to rotate, so as to realize the extension and retraction of the scissor component.

Optionally, the scissors mechanism further includes a third gear and a fourth gear that are engaged with each other, the third gear and the fourth gear are rotatably mounted on the fixed mounting base, and the other end of the first scissors is fixedly connected to the third gear, and the other end of the second scissors is fixedly connected to the fourth gear.

Optionally, the first scissor includes a plurality of scissor levers, and two adjacent scissor levers of the first scissor are connected to each other through a node structure, the second scissor includes a plurality of scissor levers, and the two adjacent scissor levers of the second scissor are connected to each other through the node structure, the node structure includes a pin shaft and a node bearing, and two adjacent scissor levers pass through the pin shaft connection, and two adjacent scissor levers pass through the node bearing housing is established on the pin shaft.

Optionally, the node structure further comprises a first fastening screw, a second fastening screw, a bearing inner ring pressing sheet and a bearing outer ring pressing sheet, the first fastening screw is arranged at the end of the pin shaft to axially limit the bearing inner ring pressing sheet, and the second fastening screw is arranged on the corresponding scissor lever to axially limit the bearing outer ring pressing sheet.

Optionally, the telescopic device further comprises a guide rail installed on the base, the guide rail extends along the telescopic direction of the scissors mechanism, and a sliding block in sliding fit with the guide rail is arranged on the scissors mechanism.

Optionally, a guide groove extending in the length direction is formed in the guide rail, the guide groove is a T-shaped guide groove, the slider is configured on the hinge shaft of the first scissors fork and the hinge shaft of the second scissors fork, and the slider is slidably fitted in the T-shaped guide groove.

Optionally, a proximity switch is further disposed on the base, and a striker is disposed on the scissors mechanism, and the striker cooperates with the proximity switch to define a retracted position of the scissors mechanism.

Optionally, the proximity switch is mounted on the base through a mounting bracket, and the position of the proximity switch on the mounting bracket can be adjusted along the telescopic direction of the scissors mechanism.

Optionally, a limit bracket is further disposed on the base, and the limit bracket is used for limiting the retraction position of the scissors mechanism.

Optionally, the driving mechanism includes a motor, and an output shaft of the motor is in transmission connection with the first scissor or the second scissor to respectively drive the first scissor and the second scissor to swing on the base.

Optionally, the swing angle of the scissor rod connected with the base of the first scissor is not greater than 90 °, the swing angle of the scissor rod connected with the base of the second scissor is not greater than 90 °, the driving mechanism comprises a steering engine, and an output shaft of the steering engine is in transmission connection with the first scissor and the second scissor so as to respectively drive the first scissor and the second scissor and the scissor rod connected with the base to swing on the base.

According to another aspect of the present disclosure, a building cargo conveying system is provided, which includes a wall, an object stage and the above-mentioned telescopic device, wherein an opening for the object stage to pass through is provided on the wall, the object stage is provided at the movable end of the scissors mechanism, so that the object stage can be transported inside and outside the wall by the telescopic action of the scissors mechanism.

According to yet another aspect of the present disclosure, a building is provided that includes the building cargo delivery system described above.

Because the driving mechanism is arranged on the base, when the scissor mechanism stretches, the driving mechanism is fixed in position and cannot move along with the stretching of the scissor mechanism. Compared with the scheme that the driving mechanism is arranged on the connecting rod mechanism in the related art, the telescopic device provided by the disclosure can relatively easily avoid the interference between the driving mechanism and parts on the scissors mechanism without special structural design. And the driving mechanism is fixed, so that the wiring of the driving mechanism (such as a motor or a steering engine) is fixed, the condition that the wiring interferes with other parts or the wiring is wound is easily avoided, and the structure of the telescopic device is favorably simplified.

Moreover, the driving mechanism is not arranged on the scissor mechanism, so that the scissor mechanism can be fully retracted, the telescopic ratio of the scissor mechanism is increased, and the occupied space of the whole telescopic device is smaller after the scissor mechanism is in the retracted position.

In addition, through setting up gear drive, make the scissors fork pole that first scissors fork and base link to each other swing for the base, make the scissors fork pole that second scissors fork and base link to each other swing for the base, gear drive's synchronism and stationarity are better, be favorable to promoting the stationarity that first scissors fork and second scissors fork concertina movement, thereby be favorable to promoting the stationarity that whole telescoping device moved, avoid the telescoping device to produce the beat at flexible in-process, when being applied to goods conveying system with this telescoping device, be favorable to promoting the stationarity that the goods conveyed.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a telescopic device according to an embodiment of the present disclosure;

FIG. 2 is a perspective view of another perspective of a retractor device according to an embodiment of the present disclosure;

FIG. 3 is a schematic front view of a retractor device according to an embodiment of the present disclosure;

FIG. 4 is a schematic left side view of a retractor according to an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view taken along line C-C of FIG. 3;

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 3;

fig. 8 is an enlarged partial schematic view of fig. 3 showing the proximity switch and the mounting bracket.

Description of the reference numerals

100-a scissor mechanism; 11-a first scissor; 111-a first scissor lever; 112-a second scissor lever; 113-a third scissor lever; 12-a second scissors; 121-a fourth scissor lever; 122-fifth scissors rod; 123-a sixth scissor pole; 13-a hinged axis; 14-a slide block; 21-fixing the mounting seat; 211-a first plate; 212-a second plate; 213-a base plate; 22-a mobile mount; 101-a first installation axis; 102-a second mounting shaft; 103-a third mounting axis; 104-a fourth installation shaft; 105-a first bearing; 106-a second bearing; 107-a spacing sleeve; 108-a third bearing; 109-a fourth bearing; 31-a first gear; 32-a second gear; 33-third gear; 34-a fourth gear; 40-node structure; 41-a pin shaft; a 42-node bearing; 43-a first fastening screw; 44-a second fastening screw; 45-pressing the bearing inner ring; 46-bearing outer ring tabletting; 50-collision sheet; 200-a drive mechanism; 210-a motor; 201-output shaft of motor; 220-a coupler; 300-a base; 400-a guide rail; 410-a chute; 500-proximity switches; 510-long hole; 520-a fastener; 600-mounting a bracket; 700-limit bracket.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the terms of orientation such as "upper" and "lower" are generally defined in the drawing direction of the drawings, and "inner" and "outer" refer to the inner and outer of the relevant components, and the terms "first" and "second" and the like used in the embodiments of the present disclosure are used to distinguish one element from another element, and have no order or importance.

As shown in fig. 1 to 8, the present disclosure provides a telescopic device, which includes a driving mechanism 200, a scissors mechanism 100, and a base 300, wherein one end of the scissors mechanism 100 is connected to the base 300, and the other end is a movable end, and a movable mounting seat 22 is disposed on the movable end. The scissors mechanism 100 has a scissors assembly, the scissors assembly includes a first scissors 11 and a second scissors 12 hinged to each other, and the driving mechanism 200 can drive the scissors rod of the first scissors 11 and the second scissors 12 closest to the base 300 to move, so as to realize the smooth extension and retraction of the scissors mechanism 100. Wherein the driving mechanism 200 may be mounted to the base 300. When a load is placed at the movable end of the scissors mechanism 100, the load can be transferred by using the retractable device.

Since the driving mechanism 200 is disposed on the base 300, when the scissors mechanism 100 extends and contracts, the driving mechanism 200 is fixed and does not move along with the extension and contraction of the scissors mechanism 100. Compared with the prior art in which the driving mechanism is disposed on the link mechanism, in the telescopic device provided by the present disclosure, interference between the driving mechanism 200 and the components on the scissors mechanism 100 can be avoided relatively easily without a special structural design. And the driving mechanism 200 is fixed, so that the wiring of the driving mechanism 200 (such as the motor 210 or the steering engine) is fixed, the situation that the wiring interferes with other parts or the wiring is wound is easily avoided, and the structure of the telescopic device is simplified.

Moreover, since the driving mechanism 200 is not disposed on the scissors mechanism 100, the scissors mechanism 100 can be retracted sufficiently, the expansion ratio of the scissors mechanism 100 can be increased, and the space occupied by the whole expansion device after the scissors mechanism 100 is in the retracted position can be reduced.

Since the movable end of the scissors mechanism 100 is provided with the movable mounting base 22, it is easy to mount external parts, such as a stage, on the one hand. On the other hand, to facilitate mounting of the gear structure (see in particular below)

As shown in fig. 1 and 5, in an embodiment of the present disclosure, the scissors mechanism 100 further includes a fixed mounting base 21, and a first gear 31 and a second gear 32 engaged with each other, the fixed mounting base 21 is fixed (e.g., screwed) to the base 300, the first gear 31 and the second gear 32 are rotatably mounted to the fixed mounting base 21, one end of the first scissors 11 is fixedly connected to the first gear 31, one end of the second scissors 12 is fixedly connected to the second gear 32, and the driving mechanism 200 can drive the first gear 31 or the second gear 32 to rotate, so as to achieve the extension and retraction of the scissors assembly. Alternatively, as shown in fig. 5, the first gear 31 may be mounted to the fixed mount 21 by a first mounting shaft 101, and the first gear 31 may be fixed on the first mounting shaft 101 by flat keys, the second gear 32 may be mounted on the fixed mount 21 by a second mounting shaft 102, and the second gear 32 may be fixed on the second mounting shaft 102 by flat keys.

Through setting up gear drive for the scissor pole that first scissor 11 and base 300 link to each other swings for base 300, makes the scissor pole that second scissor 12 and base 300 link to each other swing for base 300, is favorable to promoting the stationarity of first scissor 11 and the 12 concertina movements of second scissor, thereby is favorable to promoting the stationarity of whole telescoping device operation, avoids the telescoping device to produce the beat at flexible in-process. When the telescopic device is applied to a cargo conveying system, the stability of cargo conveying is favorably improved.

Specifically, as shown in fig. 3 and 5, and referring to the drawing direction of fig. 3, when the driving mechanism 200 drives the first gear 31 to rotate counterclockwise, the lowermost scissors rod (e.g., the first scissors rod 111 shown in fig. 3) of the first scissors 11 is driven to rotate counterclockwise. At the same time, the second gear 32 is rotated clockwise, which drives the lowermost fork rod (i.e. the fourth fork rod 121 shown in fig. 3) of the second fork 12 to rotate clockwise. In this way, the angle between the lowest scissors rod of the first scissors 11 and the lowest scissors rod of the second scissors 12 is increased, so that the movable end of the scissors mechanism 100 moves downwards, and the telescopic device is retracted.

When the driving mechanism 200 drives the first gear 31 to rotate clockwise, the second gear 32 is driven to rotate counterclockwise. In this way, the angle between the lowermost fork shaft of the first fork 11 and the lowermost fork shaft of the second fork 12 is reduced, so that the free end of the fork mechanism 100 moves upward, and the extension of the telescopic device is achieved.

It should be noted that, in the present disclosure, the scissors mechanism 100 may be disposed in any direction besides the up-down direction, for example, in the horizontal direction, in which the telescopic direction of the scissors mechanism 100 is the horizontal direction, or in the direction forming an angle with the horizontal direction, and the present disclosure is not limited thereto.

Alternatively, the gear ratio of the first gear 31 and the second gear 32 is 1: 1. In this way, the lowermost scissor lever of the first scissor 11 and the lowermost scissor lever of the second scissor 12 will move synchronously, swinging the same angle, facilitating the scissor mechanism 100 to remain telescopic in the same direction, e.g., up and down as shown in fig. 3.

Of course, if the scissors mechanism 100 needs to extend and retract at a certain angle from the up-down direction, the transmission ratio of the first gear 31 and the second gear 32 can be set reasonably to realize the extension and retraction of the scissors mechanism 100 in the inclined direction.

In the embodiment shown in fig. 3, the first gear 31 serves as a driving gear, and the second gear 32 serves as a driven gear. Alternatively, in other embodiments of the present disclosure, the driving mechanism 200 may drive the second gear 32 to rotate so as to drive the first gear 31 to rotate. That is, the first gear 31 serves as a driven gear, and the second gear 32 serves as a driving gear.

Alternatively, as shown in fig. 5, a first bearing 105, a second bearing 106, a bearing ring, a fastening screw, a limiting sleeve 107, etc. are further disposed in the fixed mounting seat 21, the first mounting shaft 101 may be rotatably disposed on the fixed mounting seat 21 through two first bearings 105 respectively, and the first gear 31 is located between the two first bearings 105. The second mounting shaft 102 may be rotatably disposed on the fixed mounting base 21 through two second bearings 106, respectively, and the second gear 32 is located between the two second bearings 106. The ends of the first and second mounting shafts 101, 102 are provided with a bearing collar and a fastening screw to achieve axial retention of the first and second bearings 105, 106, respectively. Wherein, the first mounting shaft 101 and the second mounting shaft 102 can also be sleeved with a limiting sleeve 107 respectively to realize axial limiting of the first gear 31 and the second gear 32 on the corresponding mounting shafts.

In the present disclosure, the fixed mount 21 may have any suitable structure and shape. As shown in fig. 2 and 5, in an embodiment of the present disclosure, the fixed mounting base 21 includes a bottom plate 213 and a first plate 211 and a second plate 212 oppositely disposed on the bottom plate, the bottom plate 213 is fixed (e.g., screwed) on the mounting base 300, two ends of the first mounting shaft 101 are respectively mounted on the first plate 211 and the second plate 212 through two first bearings 105, and two ends of the second mounting shaft 102 are respectively mounted on the first plate 211 and the second plate 212 through two second bearings 106.

As shown in fig. 1, 3 and 6, the scissors mechanism 100 may further include a movable mounting base 22, and a third gear 33 and a fourth gear 34 engaged with each other, the third gear 33 and the fourth gear 34 are rotatably mounted on the movable mounting base 22, and the other end of the first scissors 11 is fixedly connected to the third gear 33, and the other end of the second scissors 12 is fixedly connected to the fourth gear 34. Here, the movable mount 22 is a movable mount that moves together with the scissors assembly when the scissors assembly is extended and retracted. Alternatively, the third gear 33 may be mounted to the mobile mount 22 by a third mounting shaft 103, and the third gear 33 may be fixed on the third mounting shaft 103 by flat keys, the fourth gear 34 may be mounted on the mobile mount 22 by a fourth mounting shaft 104, and the fourth gear 34 may be fixed on the fourth mounting shaft 104 by flat keys.

Through setting up third gear 33 and fourth gear 34, cooperate with first gear 31 and second gear 32 that are located the fork subassembly lower extreme for both ends all adopt gear drive about scissors fork mechanism 100, are favorable to promoting the stationarity of first scissors fork 11 and the 12 concertina movements of second scissors fork, thereby are favorable to promoting the stationarity of whole telescoping device motion, avoid the telescoping device to produce the beat at flexible in-process.

Specifically, as shown in fig. 1, 3 and 6, and referring to the drawing direction of fig. 3, when the driving mechanism 200 drives the first gear 31 to rotate counterclockwise, the third gear 33 at the upper end of the first scissors 11 rotates counterclockwise, which drives the scissors rod at the uppermost end of the first scissors 11 (i.e. the third scissors rod 113 shown in fig. 3) to rotate counterclockwise. Meanwhile, the fourth gear 34 at the upper end of the second scissors 12 rotates clockwise, which drives the uppermost scissors rod (i.e. the sixth scissors rod 123 shown in fig. 3) of the second scissors 12 to rotate clockwise. Thus, the angle between the uppermost fork rod of the first fork 11 and the uppermost fork rod of the second fork 12 is increased, and the retraction of the telescopic device is realized.

When the driving mechanism 200 drives the first gear 31 to rotate clockwise, the third gear 33 at the upper end of the first scissors 11 rotates clockwise, and the fourth gear 34 at the upper end of the second scissors 12 rotates counterclockwise. In this way, the angle between the uppermost fork rod of the first fork 11 and the uppermost fork rod of the second fork 12 is reduced, and the extension of the telescopic device is achieved.

Alternatively, the gear ratio of the third gear 33 and the fourth gear 34 is 1:1, so that the uppermost fork rod of the first scissors 11 and the uppermost fork rod of the second scissors 12 will move synchronously and swing by the same angle, which is beneficial to keep the scissors mechanism 100 telescopic in the same direction.

Of course, if the scissors mechanism 100 needs to be extended and retracted at a certain angle with the vertical direction, the transmission ratio of the third gear 33 and the fourth gear 34 can be set reasonably, so that the scissors mechanism 100 can be extended and retracted in the inclined direction.

Alternatively, as shown in fig. 6, a third bearing 108, a fourth bearing 109, a retainer ring, a fastening screw, a limiting sleeve, etc. are further disposed in the movable mounting seat 22, the third mounting shaft 103 can be rotatably disposed on the movable mounting seat 22 through two third bearings 108 respectively, and the third gear 33 is located between the two third bearings 108. The fourth mounting shaft 104 can be rotatably disposed on the movable mounting base 22 through two fourth bearings 109, respectively, and the fourth gear 34 is located between the two fourth bearings 104. The ends of the second mounting shaft 103 and the second mounting shaft 104 are provided with a bearing collar and a fastening screw to achieve axial spacing of the third bearing 108 and the fourth bearing 109, respectively. Wherein, the third mounting shaft 103 and the fourth mounting shaft 104 can also be sleeved with a limiting sleeve respectively to realize the axial limiting of the third gear 33 and the fourth gear 34 on the corresponding mounting shafts.

In addition, in other disclosed embodiments, other structures besides gear drives may be used to achieve the telescoping of the scissor assembly. For example, a first sliding slot and a second sliding slot are provided on the base 300, the lower end of the first scissors 11 is slidably mounted in the first sliding slot, and the lower end of the second scissors 12 is slidably mounted in the second sliding slot. In this way, the extension and retraction of the scissors assembly can be realized by changing the position of the lower end of the first scissors 11 in the first chute and changing the position of the lower end of the second scissors 12 in the second chute.

It should be noted that, in the present disclosure, the number of the scissor levers of the first scissor 11 and the number of the scissor levers of the second scissor 12 are not limited, and any suitable number may be selected as needed.

As shown in fig. 1 and 3, in an embodiment of the present disclosure, the first scissors 11 may include a first scissors shaft 111, a second scissors shaft 112, and a third scissors shaft 113 rotatably connected in sequence. One end of the first scissors rod 111 is connected to the first gear 31, the other end is connected to one end of the second scissors rod 112, the other end of the second scissors rod 112 is connected to one end of the third scissors rod 113, and the other end of the third scissors rod 113 is connected to the third gear 33.

The second scissors 12 may comprise a fourth scissors rod 121, a fifth scissors rod 122 and a sixth scissors rod 123 which are rotatably connected in sequence. One end of the fourth scissors rod 121 is connected to the second gear 32, the other end is connected to one end of the fifth scissors rod 122, the other end of the fifth scissors rod 122 is connected to one end of the sixth scissors rod 123, and the other end of the sixth scissors rod 123 is connected to the fourth gear 34. Wherein, the middle part of the second scissors rod 112 can be hinged with the middle part of the fifth scissors rod 122.

When the required travel of the telescopic device is short, the intermediate scissor levers, i.e. the second scissor lever 112 and the fifth scissor lever 122, are eliminated, and the first scissor lever 111 and the third scissor lever 113 are directly connected, and the fourth scissor lever 114 and the sixth scissor lever 116 are directly connected. If the scissor mechanism 100 requires a longer stroke, the overall stroke can be increased by adding multiple intermediate links.

In order to improve the smoothness of rotation between two adjacent scissors rods on the same scissors. In one embodiment of the present disclosure, two adjacent scissors rods of the first scissors 11 are connected to each other by a node structure 40, and two adjacent scissors rods of the second scissors 12 are connected to each other by a node structure 40. Specifically, in the embodiment shown in fig. 3 and 7, the first scissor bar 111 and the second scissor bar 112, the second scissor bar 112 and the third scissor bar 113 are connected by the node structure 40, and the fourth scissor bar 121 and the fifth scissor bar 122, and the fifth scissor bar 122 and the sixth scissor bar 123 are connected by the node structure 40. The node structure 40 includes a pin shaft 41 and a node bearing 42, two adjacent scissors rods are connected by the pin shaft 41, and the scissors rods are sleeved on the pin shaft 41 by the node bearing 42.

In this way, due to the node bearing 42, the two adjacent scissors fork connecting rods rotate relatively smoothly, and compared with a scheme of dry friction with an oilless bushing, the driving power of the driving mechanism 200 can be effectively reduced, and the abrasion of parts is reduced.

It is understood that in other embodiments of the present disclosure, other connection manners may be adopted between two adjacent scissors rods of the first scissors 11 and two adjacent scissors rods of the second scissors 12, for example, a hinged joint is adopted, and the present disclosure is not limited thereto.

Optionally, as shown in fig. 7, the node structure 40 may further include a first fastening screw 43, a second fastening screw 44, a bearing inner ring pressing plate 45 and a bearing outer ring pressing plate 46, where the first fastening screw 43 is disposed at an end of the pin shaft 41 to achieve axial limitation of the bearing inner ring pressing plate 45, and the second fastening screw 44 is disposed at corresponding scissors rods (such as the second scissors rod 112 and the third scissors rod 113 shown in fig. 3) to achieve axial limitation of the bearing outer ring pressing plate 46. By adopting the scheme of fastening screws and bearing pressing sheets, the two adjacent shearing fork rods can be conveniently detached, the quantity of the shearing fork rods can be conveniently increased and decreased, and the number of the shearing fork rods of the shearing fork assembly can be conveniently adjusted. When the scissors are disassembled, the number of the connecting rods of the scissors can be reduced only by screwing out the fastening screws. When the device is installed again, the corresponding fastening screw is only required to be screwed down.

As shown in fig. 1, in an embodiment of the present disclosure, the telescopic device further includes a guide rail 400, the guide rail 400 extends along the telescopic direction of the scissors assembly, and the scissors mechanism 100 is provided with a slider 14 slidably engaged with the guide rail 400. Alternatively, one end of the guide rail 400 may be provided on the base 300. During extension or retraction of the scissors mechanism 100, the slider 14 slides along the guide rail 400. By providing the guide rail 400, lateral (a direction perpendicular to the telescopic direction) support can be provided to the scissors mechanism 100, and the rigidity of the scissors mechanism 100 in the lateral direction can be increased. In addition, the cooperation of the slide block guide rail structure is also beneficial to and improves the stability of the extension and retraction of the scissors mechanism 100.

Alternatively, as shown in fig. 1 and 4, in an embodiment of the present disclosure, the guide rail 400 is provided with a guide groove 410 extending along a length direction of the guide rail 400, the above-mentioned slide block 14 is configured on the hinge shaft of the first scissors 11 and the second scissors, and the slide block 14 slides in the guide groove 410 when the scissors mechanism 100 extends and contracts.

Alternatively, as shown in fig. 5, the guide groove 410 may be a T-shaped guide groove, which can prevent the slider 14 from being accidentally removed from the guide groove 410, and can improve the reliability of the sliding connection between the slider 14 and the guide rail 400.

In other embodiments of the present disclosure, the guide rail 400 may not be mounted on the base 300, but disposed on, for example, the ground. In addition, a slide groove for engaging with the guide rail 400 may be provided on the slider. Furthermore, in other embodiments of the present disclosure, the slider 14 may also be disposed on the movable mount 22.

In the present disclosure, a limiting mechanism may be disposed on the base 300 to limit the telescopic stroke of the scissors mechanism 100, so as to control the telescopic stroke of the scissors mechanism 100.

As shown in fig. 1 and 3, in one embodiment, a proximity switch 500 is also provided on base 300, and a striker 50 is provided on scissor mechanism 100, striker 50 cooperating with proximity switch 500 to define a retracted position of scissor mechanism 100. That is, in the present embodiment, the limit mechanism includes the proximity switch 500 and the striker 50. The specific working process is as follows: when the scissors mechanism 100 retracts a predetermined distance, the striker 50 collides with and triggers the proximity switch 500, and the retracting device stops the retracting movement, at which time the scissors mechanism 100 is in the retracted position, that is, the scissors mechanism 100 is in the starting position of the stroke (zero point position).

The mounting location of striker 50 is not limited by the present disclosure, and striker 50 may alternatively be mounted to mobile mount 22 in other embodiments.

In this disclosure, the end of the extension stroke of the scissors mechanism 100 may be controlled by the driving mechanism 200 (e.g., the motor 210) or may be controlled by a scheme similar to the definition of the retracted position of the scissors mechanism 100, i.e., a scheme using a proximity switch and a striker.

In addition, in other embodiments of the present disclosure, for example, an infrared sensor or the like may be used to detect a real-time position of the free end of the scissors mechanism 100, and the controller cooperates with the driving device (e.g., the motor 210) to limit the stroke of the scissors mechanism 100.

Further, as shown in fig. 3 and 8, the proximity switch 500 may be mounted to the base 300 by a mounting bracket 600, and the position of the proximity switch 500 on the mounting bracket 600 may be adjusted in the direction in which the scissors mechanism 100 extends and retracts. In this way, by adjusting the position of the proximity switch 500 on the mounting bracket 600, the retracted position (stroke start position) of the scissors mechanism 100 can be adjusted, and thus the telescopic stroke of the telescopic device can be adjusted as desired.

There are a variety of ways in which the position of the proximity switch 500 on the mounting bracket 600 can be adjusted. In one embodiment of the present disclosure, as shown in fig. 8, the limit switch is provided with a long hole 510 extending in the telescopic direction of the scissors mechanism 100, the mounting bracket 600 is provided with a limit hole (not shown), and one end of the fastening member 520 passes through the long hole 510 and is fixed in the limit hole, so as to fix the proximity switch 500 on the mounting bracket 600.

In other embodiments of the present disclosure, the mounting bracket 600 may be provided with a plurality of mounting holes extending along the telescopic direction of the scissors mechanism 100, the limit switch is provided with a through hole, and one end of the fastening member 520 passes through and optionally cooperates with one of the mounting holes, so that the adjustment of the position of the proximity switch 500 can be realized.

As shown in fig. 1 and 3, a limit bracket 700 may be further disposed on the base 300, the limit bracket 700 being used to define the retracted position of the scissors mechanism 100. If the proximity switch 500 fails, causing the striker 50 to contact the proximity switch 500, the scissors mechanism 100 continues to retract. Due to the arrangement of the limiting support 700, when the movable mounting seat 22 is in contact with the limiting support 700, the scissor mechanism 100 is clamped and stops stretching, the motor 210 or the steering engine blocks rotation, and the motor 210 or the steering engine driving system reports errors and stops working, so that the scissor mechanism 100 is prevented from being damaged.

In the present disclosure, the proximity switch 500 and the limit bracket 700 are arranged to limit the scissor mechanism 100 by software and hardware, so that a dual protection effect is achieved, and the device can be effectively controlled and protected.

In the present disclosure, the specific structure of the driving mechanism 200 is not limited. In one embodiment, the driving mechanism 200 may include a motor 210, and an output shaft 201 of the motor 210 is in transmission connection with the first scissors 11 or the second scissors 12 to respectively drive a scissors rod (e.g., the first scissors rod 111 shown in fig. 3) of the first scissors 11 connected to the base 300 to swing on the base 300, and drive a scissors rod (e.g., the fourth scissors rod 121 shown in fig. 3) of the second scissors 12 connected to the base 300 to swing on the base 300. Specifically, as shown in fig. 4 and 5, the output shaft 201 of the motor 210 may be in transmission connection with the first mounting shaft 101 through, for example, a coupling 220 to rotate the first gear 31. Wherein, the motor 210 can be installed on the base 300 through the base.

As shown in fig. 3, since the driving mechanism 200 directly drives the lowest scissor levers of the first scissor 11 and the second scissor 12 to swing, the swing angle of the scissor lever of the first scissor 11 connected with the base 300 (i.e. the first scissor lever 111 shown in fig. 3) is not greater than 90 °, and the swing angle of the scissor lever of the second scissor 12 connected with the base 300 (i.e. the fourth scissor lever 121 shown in fig. 3) is not greater than 90 °. Thus, the rotation angle of the output shaft of the drive mechanism 200, which is drivingly connected to the first gear 31, is small. Therefore, the power member of the driving mechanism 200 is suitably a steering engine. The output shaft of the steering engine has a small rotation angle, and the rotation angle is usually within 90 degrees. The output shaft of the steering engine can be in transmission connection with the first scissors 11 and the second scissors 12 to respectively drive the scissors rods of the first scissors 11 and the second scissors 12 connected with the base 300 to swing on the base 300, that is, drive the first scissors rod 111 and the fourth scissors rod 121 to swing relative to the base 300.

In addition, the steering engine is adopted as the power part, and the advantages are that: generally, the steering wheel can preset the turned angle of its output shaft, like this, through the structure of reasonable setting scissors mechanism 100 for the output shaft when the steering wheel is at zero angle and predetermine the angle (like 90 °) rotation in-process, can make scissors mechanism 100 just switch at withdrawal position and extension position. Therefore, in the embodiment adopting the steering engine, the limit mechanism can be omitted, the stroke of the scissor mechanism 100 is limited by the rotation angle of the steering engine, the use of parts is reduced, and the structure of the telescopic device is simplified.

In conclusion, the telescopic device provided by the disclosure has the advantages of unique degree of freedom, simple driving, large telescopic ratio, small occupied space after retraction and the like, can be widely applied to various telescopic mechanisms, and can replace linear motion actuating mechanisms such as an electric linear push rod and a pneumatic cylinder.

According to another aspect of the present disclosure, a cargo transfer system for transferring cargo bidirectionally between an inner space and an outer space separated by partitions is provided. The cargo conveying system comprises an object stage and the telescopic device, wherein an opening for the object stage to pass through is formed in the partition, and the object stage is arranged at the movable end of the scissor mechanism 100 so as to realize switching between the internal space and the external space of the object stage through the telescopic action of the scissor mechanism 100.

According to still another aspect of the present disclosure, there is provided a building cargo conveying system, comprising the above cargo conveying system, wherein the partition is a wall body dividing the interior and the exterior, and the wall body is provided with an opening for passing the object stage. In this way, by means of the telescopic device, the goods (e.g. the meal box) can be transported both indoors and outdoors.

As an application scenario, when unmanned aerial vehicle carries the meal case to descend at the user's airport that is located the building, the user can lift the meal case off and place on the objective table, then convey to indoor through the telescoping device. And the dining box can be automatically pushed out to the outside by using the telescopic device.

According to another aspect of the present disclosure, a building is provided that includes the building cargo delivery system described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner to avoid unnecessary repetition, and the disclosure does not separately describe various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (13)

1. A telescopic device is characterized by comprising a scissor mechanism (100), a driving mechanism (200) and a base (300), wherein one end of the scissor mechanism (100) is connected with the base (300), the other end of the scissor mechanism is a movable end, a movable mounting seat (22) is arranged on the movable end, the scissor mechanism (100) is provided with a scissor assembly, the scissor assembly comprises a first scissor (11) and a second scissor (12) which are hinged with each other, the driving mechanism (200) is arranged on the base (300),

cut fork mechanism (100) and still include fixed mounting seat (21) and intermeshing's first gear (31) and second gear (32), fixed mounting seat (21) are fixed in base (300), first gear (31) and second gear (32) rotationally install in fixed mounting seat (21), just the one end of first scissors fork (11) with first gear (31) are fixed continuous, the one end of second scissors fork (12) with second gear (32) are fixed continuous, actuating mechanism (200) can drive first gear (31) or second gear (32) rotate, in order to realize cut the flexible of fork subassembly.

2. The telescopic device according to claim 1, wherein the scissors mechanism (100) further comprises a third gear (33) and a fourth gear (34) which are engaged with each other, the third gear (33) and the fourth gear (34) are rotatably mounted on the movable mounting base (22), the other end of the first scissors (11) is fixedly connected with the third gear (33), and the other end of the second scissors (12) is fixedly connected with the fourth gear (34).

3. Telescopic device according to claim 1, wherein the first scissor bar (11) comprises a plurality of scissor bars, two adjacent scissor bars of the first scissor bar (11) are connected by a node structure (40), the second scissor bar (12) comprises a plurality of scissor bars, two adjacent scissor bars of the second scissor bar (12) are connected by the node structure (40),

the node structure (40) comprises a pin shaft (41) and a node bearing (42), two adjacent shearing fork rods are connected through the pin shaft (41), and the two adjacent shearing fork rods are sleeved on the pin shaft (41) through the node bearing (42).

4. The telescopic device according to claim 3, wherein the node structure (40) further comprises a first fastening screw (43), a second fastening screw (44), a bearing inner race squash (45) and a bearing outer race squash (46), the first fastening screw (43) being provided at an end of the pin (41) to achieve axial limitation of the bearing inner race squash (45), the second fastening screw (44) being provided on a corresponding scissor lever to achieve axial limitation of the bearing outer race squash (46).

5. The telescopic device according to claim 1, further comprising a guide rail (400) mounted on the base (300), wherein the guide rail (400) extends along the telescopic direction of the scissors mechanism (100), and a slider (14) slidably engaged with the guide rail (400) is arranged on the scissors mechanism (100).

6. The telescopic device according to claim 5, wherein the guide rail (400) is provided with a guide groove (410) extending along the length direction, the guide groove (410) is a T-shaped guide groove, the slide block (14) is formed on the hinge shaft (13) of the first scissor fork (11) and the second scissor fork (12), and the slide block (14) is in sliding fit in the T-shaped guide groove.

7. The telescopic device according to claim 1, wherein a proximity switch (500) is further provided on the base (300), and a striker (50) is provided on the scissors mechanism (100), the striker (50) cooperating with the proximity switch (500) to define a retracted position of the scissors mechanism (100).

8. The telescopic device according to claim 7, wherein the proximity switch (500) is mounted to the base (300) by a mounting bracket (600), and the position of the proximity switch (500) on the mounting bracket (600) is adjustable in the telescopic direction of the scissors mechanism (100).

9. The telescopic device according to claim 1 or 7, wherein a limit bracket (700) is further provided on the base (300), the limit bracket (700) being used to define a retracted position of the scissors mechanism (100).

10. The telescopic device according to claim 1, wherein the driving mechanism (200) comprises a motor (210), and an output shaft (201) of the motor (210) is in transmission connection with the first scissor (11) or the second scissor (12) to respectively drive scissor rods of the first scissor (11) and the second scissor (12) connected with the base (300) to swing on the base (300).

11. The telescopic device according to claim 1, wherein the swing angle of a scissor rod connected with the base (300) of the first scissor (11) is not more than 90 degrees, the swing angle of a scissor rod connected with the base (300) of the second scissor (12) is not more than 90 degrees, the driving mechanism (200) comprises a steering engine, and an output shaft of the steering engine is in transmission connection with the first scissor (11) and the second scissor (12) so as to respectively drive the scissor rod connected with the base (300) of the first scissor (11) and the second scissor (12) to swing on the base (300).

12. A building cargo conveying system, characterized by comprising a wall body, an object stage and the telescopic device according to any one of claims 1-11, wherein the wall body is provided with an opening for the object stage to pass through, and the object stage is arranged at the movable end of the scissor mechanism (100), so that the object stage can be switched between the inside and the outside of the wall body through the telescopic movement of the scissor mechanism (100).

13. A building including a building cargo transfer system according to claim 12.

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