CN210640607U

CN210640607U - Double-end screw rod propelling device

Info

Publication number: CN210640607U
Application number: CN201921578915.5U
Authority: CN
Inventors: 王瑞元; 蔡孟杰; 苏文成; 徐建环; 潘乙源
Original assignee: Xingji Electric Appliance Co ltd
Current assignee: Xingji Electric Appliance Group Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-05-29
Anticipated expiration: 2029-09-23

Abstract

A double-head screw rod propelling device. The problem of current handcart of falling to the ground all be the monofilament pole drive for the handcart operation straightness nature is poor, and contact is unreliable after target in place, and the lead screw atress is out of shape easily is solved. The end beam is provided with a first position for fixing interlocking and a second position for unlocking to enable the end beam and the vehicle body to move synchronously, the end beam is provided with a driving mechanism, the driving mechanism is connected with the lead screws through a transmission mechanism, and the two lead screws are driven by the transmission mechanism to rotate synchronously. The utility model discloses set up the twin lead screw and driven, guaranteed the highly uniform of handcart side-to-side movement to guaranteed the steady and reliable of handcart motion, and on the handcart resistance average assignment arrived the lead screw of handcart both sides, they were more nearly from end beam left and right ends, the moment of torsion of production was very little, so the rigidity requirement to the end beam is very low, the atress is even and symmetrical non-deformable.

Description

Double-end screw rod propelling device

Technical Field

The utility model relates to a handcart falls to ground, concretely relates to double-end lead screw advancing device.

Background

In medium voltage (12-40.5Kv) power supply and distribution systems, circuit breakers and various electrical units are widely used. In order to facilitate maintenance and improve the reliability of power supply, the circuit breaker and various electrical units are often mounted on a chassis vehicle or made into a floor-type handcart, so that the circuit breaker and various electrical units become movable components. These movable parts can be moved in and out of the electrical distribution cabinet while complying with the requirements of power supply and distribution. At present, chassis vehicle type movable parts are provided with pushing (withdrawing) mechanisms, and the pushing (withdrawing) mechanisms are matched with guide rails in a cabinet body to form a central power distribution cabinet. Various floor-type hand trucks are not provided with a propelling (withdrawing) mechanism, and the moving hand truck needs to be moved to a required position in the cabinet body by the aid of the propelling mechanism. The movable handcart with eight doors produced by various manufacturers at home and abroad and the matched propelling mechanism thereof are also diversified, but the handcart with eight doors is of a T-shaped structure which is not separated from the handcart; the crossbeam is fixed to the cabinet body through the bolt at both ends, and screw rod, nut drive mechanism are installed to the middle part of crossbeam, and rotatory screw rod makes and installs nut on the handcart and be equivalent to the crossbeam and remove to drive the handcart motion, crossbeam and screw rod type are like the T word. The existing pushing mechanism of the floor handcart generally adopts single-wire rod transmission, the handcart is driven to advance and retreat by shaking a lead screw after a cross beam is fixed, a circuit breaker or other electric equipment is generally arranged on the handcart, and a circuit is switched on or switched off by the movement of the handcart. At that time, in the actual production process, the side face of the floor handcart is not limited generally, so that when the monofilament rod rotates, the handcart can have certain swing offset, namely, the equipment cannot be butted reliably. And the stress condition of the screw rod is not good, the cross beam is fixed on the cabinet body through the bolts at the two ends, the screw rod is stressed in the middle of the cross beam, a large torque can be generated under the action of resistance, and the cross beam and the screw rod are easy to deform, so that the rigidity of the cross beam is high.

SUMMERY OF THE UTILITY MODEL

For solving among the background art current handcart of falling to the ground is the monofilament pole drive for the straightness nature is poor when the handcart moves, and the contact is unreliable after targetting in place, the easy problem that warp of lead screw atress, the utility model provides a double-end lead screw advancing device.

The technical scheme of the utility model is that: the utility model provides a double-end lead screw advancing device, includes the end beam and is used for driving the lead screw that the automobile body was marchd, the end beam have the second position that is used for fixed interlocking's primary importance and unblock to make end beam and automobile body simultaneous movement, the end beam on be equipped with actuating mechanism, actuating mechanism be connected with the lead screw through drive mechanism, the lead screw have two and two lead screws to drive synchronous rotation by drive mechanism.

As an improvement of the utility model, two the lead screws are respectively arranged at the two sides of the center of the end beam.

As a further improvement, the driving mechanism comprises a driving shaft, one end of the driving shaft is arranged in the end beam, the other end of the driving shaft is provided with an operating part connected with the handle, and the operating part extends out of the end beam.

As a further improvement, the transmission mechanism include an action wheel, a transmission belt and a transmission wheel, the action wheel cover locate in the drive shaft and rotate synchronously with the drive shaft, the transmission wheel cover locate on the lead screw and rotate synchronously with the lead screw, the action wheel be connected with the transmission wheel through the transmission belt.

As a further improvement of the utility model, the diameter of the driving wheel is smaller than that of the driving wheel.

As a further improvement, the driving wheels have two and are respectively arranged on the two lead screws, and the central shaft of the two lead screws and the central shaft of the driving shaft are arranged on the same horizontal plane.

As a further improvement of the present invention, the driving shaft is provided with an interlocking mechanism, the interlocking mechanism includes an interlocking member, the interlocking member includes a first state for shielding the operation portion and a second state for being pressed by the handle to expose the operation portion so that the handle can drive the driving shaft to rotate.

As a further improvement, the drive shaft on be equipped with the locating part, the locating part on be equipped with spacing portion, the interlocking part include interlocking portion and occlusion part, interlocking portion and occlusion part between be equipped with the holding chamber, the interlocking part when being in the first state, the spacing portion axial of interlocking portion and locating part is slided the spacing cooperation of circumferential direction, the interlocking part when being in the second state, spacing portion is located the holding intracavity.

As a further improvement of the present invention, the interlocking mechanism comprises a door closing interlocking assembly, the door closing interlocking assembly has a first position for interlocking before the door is closed, the interlocking is limited to avoid the interlocking axial movement, and a second position for unlocking after the door is closed, so that the interlocking moves along the axial direction of the driving shaft freely.

As a further improvement of the utility model, the door-closing interlocking component include casing, actuating arm, driving plate and be used for the spacing limiting plate of interlocking part, actuating arm and driving plate all articulate in the casing, the actuating arm pass through the driving plate and drive limiting plate horizontal motion.

The beneficial effects of the utility model are that, set up the twin lead screw and driven, guaranteed the highly uniform of handcart side-to-side movement to guaranteed the steady and reliable of handcart motion, and on the lead screw of handcart resistance average assignment handcart both sides, they are more nearly from end beam left and right ends, the moment of torsion of production is very little, so the rigidity requirement to the end beam is very low, the even and symmetrical non-deformable of atress. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Figure 3 is an exploded view of the door closing interlock assembly 52 of figure 2.

Fig. 4 is a schematic view showing the structure of the interlocking member 51 of fig. 2.

In the figure, 1, an end beam; 2. a screw rod; 3. a drive mechanism; 31. a drive shaft; 311. an operation section; 32. a limiting member; 321. a limiting part; 4. a transmission mechanism; 41. a driving wheel; 42. a transmission belt; 43. a driving wheel; 5. an interlock mechanism; 51. an interlock member; 511. an interlocking section; 512. a shielding portion; 513. an accommodating cavity; 52. a door closing interlock assembly; 521. a housing; 522. a drive arm; 523. a drive plate; 524. and a limiting plate.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2-4, the double-end screw rod propulsion device comprises an end beam 1 and a screw rod 2 used for driving a vehicle body to advance, wherein the end beam 1 is provided with a first position used for fixing and interlocking and a second position used for unlocking to enable the end beam 1 and the vehicle body to move synchronously, a driving mechanism 3 is arranged on the end beam 1, the driving mechanism 3 is connected with the screw rod 2 through a transmission mechanism 4, and the screw rod 2 is provided with two screw rods 2 which are driven by the transmission mechanism 4 to rotate synchronously. The beneficial effects of the utility model are that, set up the twin lead screw and driven, guaranteed the highly uniform of handcart side-to-side movement to guaranteed the steady and reliable of handcart motion, and on the lead screw of handcart resistance average assignment handcart both sides, they are more nearly from end beam left and right ends, the moment of torsion of production is very little, so the rigidity requirement to the end beam is very low, the even and symmetrical non-deformable of atress. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

The two screw rods 2 are respectively arranged at two sides of the center of the end beam 1. Specifically, the screw rods are symmetrically arranged on the end beams. Therefore, the end beam is stressed uniformly, and the vehicle body can run stably when torsion is transmitted.

The driving mechanism 3 comprises a driving shaft 31, one end of the driving shaft 31 is arranged in the end beam 1, the other end of the driving shaft 31 is provided with an operating part 311 connected with the handle, and the operating part 311 extends out of the end beam 1. Two screw rods are driven to rotate through one driving shaft, and the synchronization performance is good. The arrangement of the operating part is convenient for being matched with the handle and being convenient for manual operation. Specifically, the operation portion may be a linear axis, a square axis, or a hexagonal axis.

The transmission mechanism 4 comprises a driving wheel 41, a transmission belt 42 and a transmission wheel 43, the driving wheel 41 is sleeved on the driving shaft 31 and rotates synchronously with the driving shaft 31, the transmission wheel 43 is sleeved on the screw rod 2 and rotates synchronously with the screw rod 2, and the driving wheel 41 is connected with the transmission wheel 43 through the transmission belt 42. The structure enables the product to be driven conveniently and reliably, the screw rod acts stably, and more specifically, the transmission belt can be a chain or a belt and the like.

The diameter of the driving wheel 41 is smaller than that of the driving wheel 43. Specifically, two driving wheels 43 are respectively arranged on the two screw rods 2, and the central axes of the two screw rods 2 and the central axis of the driving shaft 31 are both arranged on the same horizontal plane. The driving wheel is driven by the small gear or the small chain wheel, so that the product can transmit larger torque force, a certain speed reduction effect is achieved, the product runs stably, and the vehicle body is convenient and reliable to push and withdraw.

The interlocking mechanism 5 is arranged on the driving shaft 31, the interlocking mechanism 5 comprises an interlocking piece 51, and the interlocking piece 51 comprises a first state of shielding the operating part 311 and a second state of exposing the operating part 311 after being pressed by a handle so that the handle can drive the driving shaft 31 to rotate. The utility model discloses set up interlocking device and made the product realize reliable interlocking, avoided the mechanism malfunction. Specifically, the driving shaft 31 is provided with the limiting part 32, the limiting part 32 is provided with the limiting part 321, the interlocking part 51 comprises an interlocking part 511 and a shielding part 512, an accommodating cavity 513 is arranged between the interlocking part 511 and the shielding part 512, when the interlocking part 51 is in a first state, the interlocking part 511 and the limiting part 321 of the limiting part 32 axially slide and circumferentially rotate to be in limiting fit, and when the interlocking part 51 is in a second state, the limiting part 321 is arranged in the accommodating cavity 513. When the interlocking piece is located at the first position, the operation part is shielded by the shielding part and cannot rotate, and meanwhile, the limiting part of the limiting part is matched with the interlocking part of the interlocking piece, so that the driving shaft is prevented from rotating. More specifically, the limiting part of the limiting part is hexagonal, and the interlocking part of the interlocking part is a hexagonal hole matched with the limiting part. When the handle is sleeved, the interlocking part moves, the limiting part falls into the accommodating cavity, and the driving shaft can rotate freely.

The interlock mechanism 5 includes a door closing interlock assembly 52, the door closing interlock assembly 52 having a first position in which it prevents axial movement of the interlock member 51 before closing the door and a second position in which it is unlocked after closing the door so that the interlock member 51 is free to move axially along the drive shaft. Specifically, the door closing interlock assembly 52 includes a housing 521, a driving arm 522, a driving plate 523 and a limiting plate 524 for limiting the interlock member 51, the driving arm 522 and the driving plate 523 are both hinged in the housing 521, and the driving arm 522 drives the limiting plate 524 to move horizontally through the driving plate 523. The utility model discloses set up the door-closing interlock, only closed the door promptly and just can be pressed by the handle and remove the back interlocking piece, the handle could operate the drive shaft action, and the security performance is higher.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A double-end lead screw propulsion device comprises an end beam (1) and a lead screw (2) used for driving a vehicle body to advance, and is characterized in that the end beam (1) is provided with a first position used for fixing interlocking and a second position used for unlocking to enable the end beam (1) and the vehicle body to move synchronously, a driving mechanism (3) is arranged on the end beam (1), the driving mechanism (3) is connected with the lead screw (2) through a transmission mechanism (4), the lead screw (2) is provided with two lead screws (2), and the two lead screws (2) are driven by the transmission mechanism (4) to rotate synchronously.

2. The double-ended screw propulsion device according to claim 1, characterised in that two of said screws (2) are arranged on each side of the centre of the end beam (1).

3. The double-ended screw propulsion device according to claim 1, characterised in that the drive mechanism (3) comprises a drive shaft (31), one end of the drive shaft (31) is arranged in the end beam (1), the other end is provided with an operating part (311) connected with the handle, and the operating part (311) extends out of the end beam (1).

4. A double-ended lead screw propulsion device according to claim 3, characterised in that the transmission mechanism (4) comprises a driving wheel (41), a transmission belt (42) and a transmission wheel (43), the driving wheel (41) is sleeved on the driving shaft (31) and rotates synchronously with the driving shaft (31), the transmission wheel (43) is sleeved on the lead screw (2) and rotates synchronously with the lead screw (2), and the driving wheel (41) is connected with the transmission wheel (43) through the transmission belt (42).

5. Double-ended screw propulsion device according to claim 4, characterised in that the diameter of the driving wheel (41) is smaller than the diameter of the transmission wheel (43).

6. A double-ended screw propulsion device according to claim 4, characterised in that two drive wheels (43) are provided on each of the two screws (2), the central axes of the two screws (2) and the central axis of the drive shaft (31) being arranged in the same horizontal plane.

7. A double-ended lead screw propulsion device according to claim 3, characterised in that the drive shaft (31) is provided with an interlocking mechanism (5), the interlocking mechanism (5) comprises an interlocking member (51), and the interlocking member (51) comprises a first state in which the operating part (311) is shielded and a second state in which the operating part (311) is exposed after being pressed by the handle, so that the handle drives the drive shaft (31) to rotate.

8. The double-ended screw rod propulsion device according to claim 7, wherein the driving shaft (31) is provided with a limiting part (32), the limiting part (32) is provided with a limiting part (321), the interlocking part (51) comprises an interlocking part (511) and a shielding part (512), a containing cavity (513) is arranged between the interlocking part (511) and the shielding part (512), when the interlocking part (51) is in the first state, the interlocking part (511) slides axially and circumferentially rotates to be in limiting fit with the limiting part (321) of the limiting part (32), and when the interlocking part (51) is in the second state, the limiting part (321) is arranged in the containing cavity (513).

9. A double-ended lead screw pusher according to claim 7, wherein said interlock mechanism (5) comprises a door closing interlock assembly (52), said door closing interlock assembly (52) having a first position in which it prevents axial movement of the interlock (51) before door closing and a second position in which it releases after door closing so that the interlock (51) is free to move axially along the drive shaft.

10. The double-ended screw propulsion device according to claim 9, wherein the door-closing interlock assembly (52) comprises a housing (521), a driving arm (522), a driving plate (523) and a limit plate (524) for limiting the position of the interlock (51), the driving arm (522) and the driving plate (523) are both hinged in the housing (521), and the driving arm (522) drives the limit plate (524) to move horizontally through the driving plate (523).