Synchronous mechanism for expanding shelter and expanding shelter

Abstract

The present invention relates to the technical field of expansion cabins, and provides a synchronization mechanism for expansion cabins, including a rotatable gear, two driving rods for providing driving force to two lifting mechanisms of the expansion cabin respectively, and a driving member for providing linear driving force, the two driving rods each having a rack engaged with the gear, the teeth of the two racks being arranged opposite to each other, one of the driving rods being connected to the output end of the driving member, and the direction of the driving force of the driving member being consistent with the length direction of the driving rod. An expansion cabin is provided, including a cabin floor, and also including two lifting mechanisms for lifting the cabin floor and the above-mentioned synchronization mechanism for expansion cabins, the two driving rods being connected to the two lifting mechanisms respectively. The present invention only requires one driving member to realize the synchronous supply of driving force for the two lifting mechanisms through the cooperation of gears and racks, and has a simple structure, is easy to implement, and has low cost but high reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion shelters, and in particular to a synchronization mechanism for expansion shelters and the expansion shelter. Background Art

[0002] In an extended shelter, due to the large size of the shelter floor, two lifting mechanisms are usually used to complete the lifting action. During the lifting process, it is necessary to ensure that the entire shelter floor is lifted or lowered in a balanced and stable manner, so the problem of synchronization of the two lifting mechanisms is involved. However, most of the existing synchronization mechanisms in the shelter field are too complicated and cannot stably and reliably achieve synchronization of the two lifting mechanisms. Summary of the invention

[0003] The object of the present invention is to provide a synchronization mechanism for expanding a shelter and an expanded shelter, which have a simple structure, are easy to implement, have low cost and high reliability.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides the following technical solution: a synchronization mechanism for expanding a cabin, comprising a rotatable gear, and also comprising two driving rods for providing driving force for two lifting mechanisms of the expansion cabin respectively, and a driving member for providing linear driving force, wherein the two driving rods both have a rack engaged with the gear, and the teeth of the two racks are arranged opposite to each other, one of the driving rods is connected to the output end of the driving member, and the direction of the driving force of the driving member is consistent with the length direction of the driving rod.

[0005] Furthermore, the driving member includes a DC telescopic rod motor, wherein one of the driving rods is connected to a connecting rod end of the DC telescopic motor.

[0006] Furthermore, a sleeve structure is provided at the end of one of the driving rods, and the sleeve structure is installed on the connecting rod end of the DC telescopic motor through a pin shaft.

[0007] Furthermore, the driving component also includes a motor fixing base, and the DC telescopic motor is installed on the motor fixing base.

[0008] Furthermore, it also includes a frame-shaped gear base, the gear is rotatably installed in the gear base, and one pair of opposite side surfaces of the gear base is connected, and the two driving rods pass through the gear base.

[0009] Furthermore, two guide wheels are provided in the gear base, each of the racks is sandwiched between the gear and one of the guide wheels, and each of the guide wheels is in rolling contact with a side of the rack away from the teeth.

[0010] Further, one of the drive rods has a double-start threaded adjustment screw.

[0011] Furthermore, it also includes two guide bases for supporting two driving rods respectively, and the two driving rods pass through the two guide bases respectively.

[0012] An embodiment of the present invention provides another technical solution: an expansion cabin, including a cabin floor, two lifting mechanisms for lifting the cabin floor and the above-mentioned synchronization mechanism for expanding the cabin, and the two driving rods are respectively connected to the two lifting mechanisms.

[0013] Furthermore, each of the lifting mechanisms includes a support frame and a support end plate for lifting the cabin floor, the support frame includes a first connecting rod with one end for mounting the support end plate, a second connecting rod with one end hinged to the first connecting rod, and a support base connectable to the extended cabin chassis, the other end of the first connecting rod is a force-bearing end for receiving the driving force provided by the driving rod, the other end of the second connecting rod is hinged to the support base, and the direction from the force-bearing end of the first connecting rod to the support base is consistent with the direction of the driving force provided by the driving rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation of the gear rack, only one driving component is needed to realize the synchronous supply of driving force of the two lifting mechanisms, the structure is simple, easy to implement, low cost but high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram from a first perspective of a lifting mechanism for expanding a shelter provided in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram from a second perspective of a lifting mechanism for expanding a shelter provided in an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of a synchronization mechanism for expanding a shelter provided by an embodiment of the present invention;

[0018] Figure 4 A schematic diagram from a first perspective of a gear base of a synchronization mechanism for expanding a shelter provided in an embodiment of the present invention;

[0019] Figure 5 A schematic diagram from a second perspective of a gear base of a synchronization mechanism for expanding a shelter provided by an embodiment of the present invention;

[0020] Figure 6 A schematic diagram from a first perspective of a lifting mechanism and a synchronization mechanism for expanding a shelter provided in an embodiment of the present invention;

[0021] Figure 7 A schematic diagram from a second perspective of a lifting mechanism and a synchronization mechanism for expanding a shelter provided in an embodiment of the present invention;

[0022] Figure 8 A schematic diagram from a third perspective of a lifting mechanism and a synchronization mechanism for expanding a shelter provided in an embodiment of the present invention;

[0023] Fig. 9 for Figure 6 An enlarged schematic diagram of point A;

[0024] Fig.10 for Figure 6 An enlarged schematic diagram of point B;

[0025] Fig.11 for Figure 7 An enlarged schematic diagram of point C;

[0026] Fig.12 A schematic diagram of a partial structure of an extended shelter provided in an embodiment of the present invention;

[0027] In the accompanying drawings: 1-lifting mechanism; 10-support end plate; 11-support frame; 110-first connecting rod; 111-second connecting rod; 112-support base; 113-force-bearing end; 114-first cross bar; 115-second cross bar; 116-connecting part; 12-support end plate seat; 13-guide assembly; 130-roller; 131-roller guide base; 2-synchronizing mechanism; 20-gear; 21-driving rod; 210-rack; 211-double-headed threaded adjusting screw; 22-driving member; 220-DC telescopic rod motor; 221-motor fixing base; 23-sleeve structure; 24-gear base; 25-guide wheel; 26-guide base; 3-cabin floor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 as well as Fig.10The embodiment of the present invention provides a synchronization mechanism for expanding a cabin, comprising a rotatable gear 20, two driving rods 21 for providing driving force to two lifting mechanisms 1 of the expansion cabin respectively, and a driving member 22 for providing a linear driving force, wherein the two driving rods 21 each have a rack 210 engaged with the gear 20, and the teeth of the two racks 210 are arranged opposite to each other, wherein one of the driving rods 21 is connected to the output end of the driving member 22, and the direction of the driving force of the driving member 22 is consistent with the length direction of the driving rod 21. Due to the large size of the cabin floor 3, two lifting mechanisms 1 are usually used to complete the lifting action, and the conventional synchronization mechanism 2 for the two lifting mechanisms 1 is relatively complex in structure and difficult to operate. Therefore, in the present embodiment, the structural form of the conventional synchronization mechanism 2 is changed, and only one driving member 22 is needed to realize the synchronous supply of driving force for the two lifting mechanisms 1, which has a simple structure, is easy to implement, has low cost but high reliability. Specifically, it is realized by using a gear 20 and a rack 210. First, the two lifting mechanisms 1 are equipped with two driving rods 21 to provide driving force for them respectively. Racks 210 are provided on the two driving rods 21. In this way, after the two racks 210 are kneaded with the gear 20, it is only necessary to provide a linear driving force to one of the driving rods 21. When the rack 210 of the driving rod 21 drives the gear 20 to rotate, the gear 20 drives the other rack 210 to move in the opposite direction of the rack 210. Due to the kneading characteristics of the gear 20 and the rack 210, the moving speeds of the two driving rods 21 are kept consistent, thereby realizing synchronous drive.

[0031] As an optimization solution of the embodiment of the present invention, please refer to Figure 6 , Figure 7 , Figure 8 as well as Fig.12 , the driving member 22 includes a DC telescopic rod motor 220, wherein one of the driving rods 21 is connected to the connecting rod end of the DC telescopic motor. In this embodiment, the linear driving force is provided by a DC telescopic motor, which is a commonly used driving member 22 in the art, and it can repeatedly provide a linear driving force to push the driving rod 21 or pull the driving rod 21. Of course, in addition to this driving member 22, the driving force can also be provided by a cylinder, or by a screw drive.

[0032] To further optimize the above solution, please refer to Figure 6 and Figure 7 The end of one of the driving rods 21 is provided with a sleeve structure 23, and the sleeve structure 23 is installed on the connecting rod end of the DC telescopic motor through a pin. In this embodiment, the end of the driving rod 21 is provided with a sleeve structure 23 to facilitate installation with the DC telescopic motor.

[0033] As an optimization solution of the embodiment of the present invention, please refer to Figure 6 and Figure 7 The driving member 22 further includes a motor fixing base 221, and the DC telescopic motor is mounted on the motor fixing base 221. In this embodiment, the DC telescopic motor is fixed by the motor fixing base 221, and the motor fixing base 221 is arranged on a side of the driving rod 21 away from the lifting mechanism 1.

[0034] As an optimization solution of the embodiment of the present invention, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 as well as Fig.10 The present synchronization mechanism 2 further includes a frame-shaped gear base 24, in which the gear 20 is rotatably mounted, and one pair of opposite side surfaces of the gear base 24 is penetrated, and the two driving rods 21 penetrate the gear base 24. In this embodiment, the gear 20 can be mounted in the gear base 24, and the two driving rods 21 both pass through the gear base 24, so as to facilitate the positional definition of these components.

[0035] To further optimize the above solution, please refer to Figure 3 , Figure 4 and Figure 5 , two guide wheels 25 are provided in the gear base 24, each of the racks 210 is sandwiched between the gear 20 and one of the guide wheels 25, and each of the guide wheels 25 is in rolling contact with the side of the rack 210 away from the teeth. In this embodiment, in order to ensure that the rack 210 moves smoothly and moves along a predetermined trajectory, a guide wheel 25 can be provided in the gear base 24, and the rack 210 is inserted between the gear 20 and the guide wheel 25, which can be limited and guided by the rotation of the guide wheel 25.

[0036] As an optimization solution of the embodiment of the present invention, please refer to Figure 6 One of the driving rods 21 has a double-threaded adjusting screw 211. In this embodiment, on the one hand, the double-threaded adjusting screw 211 can be fine-tuned during installation to ensure that the cabin floor and the initial height of the expansion cabin are absolutely level. On the other hand, if the motor fails to work properly, the double-threaded adjusting screw 211 can be manually adjusted to raise or lower the cabin floor before repairing it, thereby not affecting the use of the expansion cabin and increasing the reliability of the mechanism.

[0037] As an optimization solution of the embodiment of the present invention, please refer to Figure 3 , Figure 6 , Figure 7 and Fig.11The synchronization mechanism 2 further includes two guide bases 26 for supporting the two driving rods 21, respectively. The two driving rods 21 respectively pass through the two guide bases 26. In this embodiment, the two driving rods 21 usually need to match the size of the cabin floor 3, so they are slender. The guide bases 26 can support the driving rods 21 on the one hand, and guide them on the other hand.

[0038] Embodiment 2:

[0039] See also Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 The embodiment of the present invention provides a lifting mechanism for expanding a shelter, comprising a supporting end plate 10 for lifting a shelter floor 3, a supporting frame 11, and a driving rod 21 for providing a driving force, wherein the supporting frame 11 comprises a first connecting rod 110 having one end for mounting the supporting end plate 10, a second connecting rod 111 having one end hinged to the first connecting rod 110, and a supporting base 112 connectable to the bottom frame of the expanded shelter, the other end of the first connecting rod 110 being a force-bearing end 113 for receiving the driving force provided by the driving rod 21, the other end of the second connecting rod 111 being hinged to the supporting base 112, and the direction from the force-bearing end 113 of the first connecting rod 110 to the supporting base 112 being consistent with the direction of the driving force provided by the driving rod 21. In this embodiment, the lifting and lowering of the shelter floor 3 can be realized by the supporting frame 11 composed of the first connecting rod 110, the second connecting rod 111, and the supporting base 112, in cooperation with the driving rod 21 providing a linear power. Specifically, the driving rod 21 pushes or pulls the first connecting rod 110. When the supporting base 112 is fixed, the first connecting rod 110 will rotate about the hinge between it and the second connecting rod 111, so that its upper end rises or falls, thereby driving the supporting end plate 10 at its upper end to rise or fall. This structural form is simple, easy to implement, low cost and high reliability.

[0040] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12, the support frames 11 have at least two sets, the two sets of the support frames 11 are arranged parallel to each other and spaced apart, the two first connecting rods 110 are connected by a first cross bar 114, and the two first connecting rods 110 jointly support the support end plate 10. In this embodiment, the cabin floor 3 usually has a certain width. In order to ensure that the support frames 11 can provide stable support for the cabin floor 3, multiple sets of support frames 11 can be considered. This embodiment illustrates the form of two sets of support frames 11, that is, the overall lifting mechanism 1 forms an H shape, so that there are two support points at the upper end, which can obtain more stable support, thereby making the lifting more stable. Preferably, the first cross bar 114 passes through the two first connecting rods 110, and the two second connecting rods 111 are respectively hinged on the ends of the first cross bar 114 passing through the first connecting rod 110. In the above embodiment, the first cross bar 114 can only serve as a connecting rod, and the hinge point of the first connecting rod 110 and the second connecting rod 111 can be set separately. In this embodiment, the first cross bar 114 can also be directly passed through the two first connecting rods 110, and the ends through which it passes can be used as hinge points. The above-mentioned hinge forms can all use pins.

[0041] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 The force-bearing ends 113 of the two first connecting rods 110 are connected by a second cross bar 115, and the second cross bar 115 has a connecting portion 116 connected to the driving rod 21. In this embodiment, the second cross bar 115 can also be provided to string together the force-bearing ends 113 of the two first connecting rods 110, that is, the driving rod 21 pushes or pulls the second cross bar 115, and the driving force can be applied to the two force-bearing ends 113.

[0042] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 The support end plate 10 is provided with a support end plate seat 12 on the lower surface thereof, and the first connecting rod 110 is connected to the support end plate seat 12 via a pin. In this embodiment, the support end plate seat 12 can facilitate the installation of the first connecting rod 110 and the support end plate 10.

[0043] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 The lifting mechanism 1 further includes a guide assembly 13 for guiding the force-bearing end 113 of the first connecting rod 110. In this embodiment, the guide assembly 13 can limit the moving track of the force-bearing end 113 of the first connecting rod 110, thereby ensuring stable lifting.

[0044] To further optimize the above solution, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 , the guide assembly 13 includes a roller guide base 131 and a roller 130 rolling in the roller guide base 131, which is connected to the force-bearing end 113 of the first connecting rod 110, and the roller guide base 131 has a path for the roller 130 to roll, and the direction of the path is consistent with the direction of the driving force provided by the driving rod 21. In this embodiment, the form of guidance is that the roller 130 rolls in the roller guide base 131, and the roller guide base 131 is used to limit the guidance. Of course, in addition to this form of guidance, other existing guide forms are also possible, which will not be described in detail here. Preferably, the roller guide base 131 is a U-shaped structure, and the path is in the groove of the U-shaped structure. The roller guide base 131 is as follows. Fig. 9 As shown, placed on its side, the wheel tread of the roller 130 rolls on the two vertical sections of the U-shaped structure.

[0045] Embodiment three:

[0046] See also Figures 1 to 12The embodiment of the present invention provides an expansion cabin, including a cabin floor 3, a lifting mechanism 1 and a synchronization mechanism 2, wherein the cabin floor 3 is arranged on the first connecting rod 110, and the two driving rods 21 are respectively connected to the two lifting mechanisms 1. There are two sets of the lifting mechanisms 1, and the two sets of the lifting mechanisms 1 jointly support the cabin floor 3, and the two sets of the lifting mechanisms 1 are synchronously lifted and lowered through the synchronization mechanism 2. In this embodiment, the lifting mechanism 1 and the synchronization mechanism 2 are used to cooperate to realize the lifting or lowering of the cabin floor 3. The lifting or lowering action only needs to change the driving direction of the DC telescopic rod motor 220. For example, when the DC telescopic rod motor 220 pushes one of the driving rods 21, the other driving rod 21 also moves synchronously under the action of the synchronization mechanism 2, and the two force-bearing ends 113 receive the thrust, so that the cabin floor 3 above the first connecting rod 110 rises. Conversely, when the DC telescopic rod motor 220 pulls one of the driving rods 21, the other driving rod 21 also moves synchronously under the action of the synchronization mechanism 2, and the two force-bearing ends 113 receive the pulling force, so that the cabin floor 3 above the first connecting rod 110 falls. The overall structure is simple and easy to implement, low cost but high reliability.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An expansion shelter, comprising a shelter floor, characterized in that: The cam is an axially coupled machine which is used to drive the two gears of the gear train, and the cam is an axially coupled machine which is used to drive the two gears of the gear train. The cam is an axially coupled machine which is used to drive the two gears of the gear train. The cam is an axially coupled machine which is used to drive the two gears of the gear train. The cam is connected to the second end of the support frame by the hinged joint of the first and second ends of the support frame, and the hinged joint of the second and second ends of the support frame are connected to the support frame by the hinged joint of the first and second ends of the support frame.

2. The expansion shelter according to claim 1, characterized in that: The driving member comprises a DC telescopic motor, wherein one of the driving rods is connected to a connecting rod end of the DC telescopic motor.

3. The expansion shelter according to claim 2, characterized in that: A sleeve structure is provided at the end of one of the driving rods, and the sleeve structure is installed on the connecting rod end of the DC telescopic motor through a pin shaft.

4. The expansion shelter according to claim 2, characterized in that: The driving member also includes a motor fixing base, and the DC telescopic motor is mounted on the motor fixing base.

5. The expansion shelter according to claim 1, characterized in that: The gear is rotatably arranged in the gear base, and one pair of opposite side surfaces of the gear base is penetrated, and the two driving rods penetrate the gear base.

6. The expansion shelter according to claim 1, characterized in that: It also includes two guide bases for respectively supporting two driving rods, and the two driving rods pass through the two guide bases respectively.

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