CN112249048A

CN112249048A - Instant braking unpowered trolley

Info

Publication number: CN112249048A
Application number: CN202011307665.9A
Authority: CN
Inventors: 李飞飞; 吴宝游; 徐嵩; 吴彦君
Original assignee: China Railway Electrification Engineering Group Co Ltd
Current assignee: China Railway Electrification Engineering Group Co Ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-01-22

Abstract

The invention discloses an instant braking unpowered trolley, which comprises: the device comprises a frame, a walking system, a holding assembly and a brake assembly; the running system is arranged at the bottom of the frame and comprises a first wheel set and a second wheel set; braking system include with second wheelset fixed connection's joint spare and with the pothook that the frame rotates the connection, the pothook blocks the joint spare is with the locking the second wheelset, the subassembly that grips with the pothook is kept away from the one end activity of joint spare and the connection that does not break away from, the pothook with still be provided with reset spring between the frame. The brake system keeps a locking state when no external force for holding the assembly is input. The brake system in the normally locked state can prevent the occurrence of vehicle slipping and backward slipping. The subassembly is held in the pressure during walking for the external force that braking system received disappears immediately, and then makes the handcart in marcing can be braked immediately, has guaranteed driving safety.

Description

Instant braking unpowered trolley

Technical Field

The invention relates to the technical field of track construction transportation equipment, in particular to an instant braking unpowered trolley.

Background

In the track construction process, because the construction interval is long, apart from far away, often need adopt hand push flatbed to transport small-size material, frock and machines. However, the track area has a lot of cross operations, and the number of personnel, equipment and the like is large. Resulting in the need for frequent braking to avoid the builder or equipment when pushing or pulling the cart.

The existing hand-push flat car usually realizes braking by means of dead weight or manual brake handles. The braking mechanisms or the braking methods are not timely in braking feedback, and the phenomena of slope slipping and backward slipping are easy to occur in the rail transportation and parking processes, so that great potential safety hazards are caused to safety production.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an instant braking unpowered trolley which can be braked instantly when the trolley is in a travelling state and avoid sliding when the trolley is parked, so that the unpowered trolley is safer to use.

The invention provides a technical scheme that: an instant braking unpowered cart, comprising: the device comprises a frame, a walking system, a holding assembly and a brake assembly;

the running system is arranged at the bottom of the frame and comprises a first wheel set and a second wheel set, the first wheel set and the second wheel set are respectively close to two ends of the frame, and the widths of the first wheel set and the second wheel set are the same;

braking system include with second wheelset fixed connection's joint spare and with the pothook that the frame rotates the connection, the pothook blocks the joint spare is with the locking the second wheelset, the subassembly that grips with the pothook is kept away from the connection that the one end activity of joint spare just did not break away from, when marcing, presses the pothook through the subassembly and keeps away from the one end of joint spare is in order to make the pothook break away from the joint spare, and then the unblock the second wheelset, the pothook with still be provided with reset spring between the frame.

The beneficial effects of the above technical scheme are: the arranged brake system can be linked with the holding assembly, and the brake system keeps a locking state when no external force of the holding assembly is input. The brake system in the normally locked state can prevent the occurrence of vehicle slipping and backward slipping. The holding assembly is released during walking, so that the external force applied to the braking system disappears immediately, the handcart in the process of advancing can be braked immediately, and the driving safety is ensured.

Furthermore, the first wheel set comprises two independent first rollers, the second wheel set comprises two independent second rollers, the distance between the two first rollers is consistent with the width of the to-be-driven rail, and the distance between the two second rollers is consistent with the width of the to-be-driven rail. Two first gyro wheels and two second gyro wheels can correspond two rail respectively for the handcart can normally advance on the track.

Further, the unlocking piece is a fluted disc fixedly connected with the inner sides of the second rollers, the fluted discs are fixedly arranged on the inner sides of the second rollers, and the end parts of the clamping hooks are in lap joint with the upper parts of the fluted discs and are matched with tooth grooves of the fluted discs. The fluted disc has continuous tooth's socket for the pothook can block in the fluted disc in very little displacement, and then can block the second gyro wheel in time when making the brake.

Furthermore, the bottom of the frame is provided with a fixing part which extends downwards corresponding to the clamping hook, the fixing part is provided with a rotating shaft, and the clamping hook is provided with a rotating hole which is rotatably connected with the rotating shaft. The hook moves around the rotating shaft to realize the locking and releasing of the fluted disc.

Furthermore, the frame bottom corresponds two fluted discs and all is provided with the pothook, the subassembly that grips includes and is higher than the horizontal pole of frame, the both ends of horizontal pole all are provided with downwardly extending's montant, two the montant is connected with corresponding pothook respectively. The subassembly of gripping can be controlled two second gyro wheels simultaneously for opening of handcart stops more steadily.

Furthermore, the frame is provided with a limiting ring corresponding to the vertical rod, and the vertical rod penetrates through the limiting ring and then is connected with the clamping hook. The limiting ring can limit the force application direction of the holding component to the clamping hook, so that the clamping hook can quickly respond to the action of the holding component.

Further, reset spring includes pressure spring and extension spring, the extension spring is located the pothook with between the frame, the pressure spring is located the below of pothook, the frame bottom corresponds the pressure spring is provided with the mount, the mount extends to the below of pothook.

Furthermore, the bottom of the frame is provided with a supporting lug seat for mounting the first roller and the second roller, the supporting lug seat comprises a top plate and side plates, the two sides of the top plate are provided with the side plates extending downwards, and a wheel shaft is arranged between the two side plates.

Further, the frame comprises a rectangular outer frame, and a transverse rod piece and/or a longitudinal rod piece are/is fixed in the rectangular outer frame.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

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

FIG. 2 is a cross-sectional view of an embodiment of the present invention interfacing with a rail;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a schematic structural view of a grip assembly according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a second roller in an embodiment of the present invention;

FIG. 6 is a side view of a second roller in an embodiment of the present invention;

FIG. 7 is a side view of a first roller in an embodiment of the invention.

Reference numerals: the frame 100, the limiting ring 110, the supporting ear seat 120, the first roller 200, the second roller 300, the hook 400, the compression spring 410, the fixing frame 411, the tension spring 420, the fixing member 430, the fluted disc 440, the holding assembly 500, and the mounting fork 510.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

As shown in fig. 1-7, the present embodiment provides an instant braking unpowered cart, comprising: a frame 100 for carrying materials or operators, a walking system, a holding assembly 500 and a brake assembly;

the running system is arranged at the bottom of the frame 100 and comprises a first wheel set and a second wheel set, the first wheel set and the second wheel set are respectively close to two ends of the frame 100, and the widths of the first wheel set and the second wheel set are the same;

braking system include with second wheelset fixed connection's joint spare and with frame 100 rotates the pothook 400 of being connected, pothook 400 blocks joint spare is with the locking the second wheelset, the subassembly 500 that grips with pothook 400 keeps away from the one end activity of joint spare and the connection that does not break away from, when marcing, press through the subassembly 500 that grips and move pothook 400 and keep away from the one end of joint spare is in order to make pothook 400 break away from the joint spare, and then the unblock the second wheelset, pothook 400 with still be provided with reset spring between the frame 100, when the release grips subassembly 500, pothook 400 card once more under reset spring's effect realizes the locking to the second wheelset in going into the joint spare.

The braking system is provided to be capable of being interlocked with the grip assembly 500, and maintains a locked state when no external force is input to the grip assembly 500. The brake system in the normally locked state can prevent the occurrence of vehicle slipping and backward slipping. The holding assembly 500 is released during walking, so that the external force applied to the braking system disappears immediately, the trolley in the process of travelling can be braked immediately, and the driving safety is ensured.

In order to reduce the dead weight of the vehicle frame 100 and ensure the stress capability of the vehicle frame 100, the vehicle frame 100 comprises a rectangular outer frame, and a transverse rod and/or a longitudinal rod are/is fixed in the rectangular outer frame.

Referring to fig. 1, 2, 5, 6 and 7, in order to ensure that the first wheel set and the second wheel set can cross the rail, the first wheel set includes two independent first rollers 200, the second wheel set includes two independent second rollers 300, the widths of the first rollers 200 and the second rollers 300 are matched with the width of a single rail, so that the first rollers 200 and the second rollers 300 can move on the rail without departing from the rail, the distance between the two first rollers 200 is consistent with the width of the rail to be traveled, and the distance between the two second rollers 300 is consistent with the width of the rail to be traveled. The two first rollers 200 and the two second rollers 300 can correspond to two rails, respectively, so that the cart can normally travel on the rails.

Referring to fig. 1-2, in order to enable the first roller 200 and the second roller 300 to rotate independently at the bottom of the vehicle frame 100 without being separated from the vehicle frame 100, a supporting ear seat 120 for mounting the first roller 200 and the second roller 300 is disposed at the bottom of the vehicle frame 100, the supporting ear seat 120 includes a top plate and side plates, the two sides of the top plate are each provided with a side plate extending downwards, and a wheel axle is disposed between the two side plates.

Referring to fig. 1-2, as a preferred embodiment, the unlocking member is a fluted disc 440 fixedly connected to the inner sides of the second rollers 300, fluted discs 440 are fixedly disposed on the inner sides of the second rollers 300, and the end of the hook 400 overlaps the upper portion of the fluted disc 440 and matches with the tooth grooves of the fluted disc 440. The toothed disc 440 has a continuous tooth space, so that the hook 400 can be locked into the toothed disc 440 with a small displacement, and the second roller 300 can be immediately locked during braking. The number of teeth of the fluted disc 440 in this embodiment is preferably 12, the width of the teeth is 25mm, the thickness of the teeth is 16mm, the diameter of the tip circle is phi 180, and the diameter of the root circle is phi 150.

Referring to fig. 1, in order to rotatably connect the hook 400 to the frame 100, a fixing member 430 extending downward is disposed at the bottom of the frame 100 corresponding to the hook 400, a rotating shaft is disposed on the fixing member 430, and a rotating hole rotatably connected to the rotating shaft is disposed on the hook 400. The hook 400 moves around the rotation axis to achieve locking and releasing of the toothed disc 440. The fixing member 430 is a brake support, and the rotating shaft is a pin shaft, so that the hook 400 can rotate around the pin shaft.

Referring to fig. 1, as a preferred embodiment, the bottom of the frame 100 is provided with two hooks 400 corresponding to two gear discs 440, the hooks are flat rods, the holding assembly 500 includes a cross rod higher than the frame 100, two ends of the cross rod are provided with vertical rods extending downwards, and the two vertical rods are respectively connected with the corresponding hooks 400. The gripping assembly 500 can simultaneously control the two second rollers 300, so that the starting and stopping of the trolley are more stable. The end of the vertical rod is provided with a mounting fork 510 corresponding to the rod.

Referring to fig. 1 and 3, as a preferred embodiment, the frame 100 is provided with a limiting ring 110 corresponding to the vertical rod, and the vertical rod passes through the limiting ring 110 and then is connected to the hook 400. The stop ring 110 can limit the force application direction of the grip assembly 500 to the hook 400, so that the hook 400 can respond to the movement of the grip assembly 500 quickly.

Referring to fig. 1, as a preferred embodiment, the return spring includes a pressure spring 410 and a tension spring 420, connection points of the pressure spring 410 and the tension spring 420 on the hook 400 are both located between the pin and the unlocking member, the tension spring 420 is located between the hook 400 and the frame 100, the pressure spring 410 is located below the hook 400, a fixing frame 411 is arranged at the bottom of the frame 100 corresponding to the pressure spring 410, and the fixing frame 411 extends to below the hook 400.

As another preferred embodiment, in order to facilitate the use of the above-mentioned hand truck on a flat ground outside the track, the bottom of the frame is further provided with a first and a second foldable land wheel set, the lowest point of the first and the second foldable land wheel set in the folded state is higher than the lowest point of the running system, and the lowest point of the first and the second unfolded land wheel set is lower than the lowest point of the running system. First land bank of wheels is located two between the first gyro wheel, second land bank of wheels is located two between the second gyro wheel, first land bank of wheels includes two first walking wheels, and two first walking wheels are along the axis symmetrical arrangement of frame, and second land bank of wheels includes two second walking wheels, and two second walking wheels also are along the axis symmetrical arrangement of frame, and first walking wheel and second walking wheel are respectively through folding support and connected to the frame. A locking piece is arranged between the folding support and the frame, when the folding support needs to be used, the two first travelling wheels and the two second travelling wheels are unfolded and locked and fastened with the frame, so that the first land travelling wheel set and the second land travelling wheel set can be grounded to support and travel the frame, and the frame can travel on the land outside the track. More closely, in order to realize the brake function when the land walking, the detachable shaft coupling that is connected with between the shaft of second walking wheel and the shaft of second gyro wheel is being launched the second walking wheel and is being locked the back, is connected with the second gyro wheel through dismantling the shaft coupling for the second walking wheel can rotate with the second gyro wheel is synchronous, and then makes the second walking wheel can be braked by braking system.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of description only and is not intended to be interpreted as indicating or implying any relative importance or implicit indication of the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. An instant braking unpowered cart, comprising: a frame (100), a running system, a holding assembly (500) and a brake assembly;

the running system is arranged at the bottom of the frame (100) and comprises a first wheel set and a second wheel set, the first wheel set and the second wheel set are respectively close to two ends of the frame (100), and the first wheel set and the second wheel set are the same in width;

braking system include with second wheelset fixed connection's joint spare and with pothook (400) of being connected are rotated to frame (100), pothook (400) block joint spare is with the locking the second wheelset, the subassembly (500) that grips with pothook (400) are kept away from the connection that the one end activity of joint spare just did not break away from, when advancing, press through the subassembly (500) that grips and move pothook (400) so that pothook (400) break away from the joint spare, and then the unblock the second wheelset, pothook (400) with still be provided with reset spring between frame (100).

2. An instant braking unpowered cart according to claim 1, wherein the first wheel set comprises two independent first wheels (200) and the second wheel set comprises two independent second wheels (300), the spacing between the two first wheels (200) corresponding to the width of the rail to be traveled and the spacing between the two second wheels (300) corresponding to the width of the rail to be traveled.

3. The instant braking unpowered cart of claim 2, wherein the unlocking member is a toothed plate (440) fixedly connected to the inner sides of the second rollers (300), the toothed plate (440) is fixedly arranged on each of the inner sides of the second rollers (300), and the end of the hook (400) is overlapped with the upper portion of the toothed plate (440) and is matched with the tooth grooves of the toothed plate (440).

4. An instant braking unpowered cart as claimed in any one of claims 1-3, wherein the bottom of the frame (100) is provided with a downwardly extending fixing member (430) corresponding to the hook (400), the fixing member (430) is provided with a pivot shaft, and the hook (400) is provided with a pivot hole rotatably connected to the pivot shaft.

5. An instant braking unpowered cart as claimed in claim 3, wherein the bottom of the frame (100) is provided with hooks (400) corresponding to the two toothed discs (440), the holding assembly (500) comprises a cross bar higher than the frame (100), the cross bar is provided with vertical rods extending downward at both ends, and the two vertical rods are respectively connected to the corresponding hooks (400).

6. An instant braking unpowered cart as claimed in claim 5, wherein said frame (100) is provided with a stop ring (110) corresponding to said vertical rod, said vertical rod passing through said stop ring (110) and then being connected to said hook (400).

7. The instant braking unpowered cart of claim 1, wherein the return spring comprises a compression spring (410) and a tension spring (420), the tension spring (420) is located between the hook (400) and the frame (100), the compression spring (410) is located below the hook (400), a fixing frame (411) is disposed at the bottom of the frame (100) corresponding to the compression spring (410), and the fixing frame (411) extends to below the hook (400).

8. An instant braking unpowered cart according to claim 2, 3 or 5, wherein the frame (100) is provided at a bottom thereof with a support ear mount (120) for mounting the first and second rollers (200, 300), the support ear mount (120) comprising a top plate and side plates, the top plate being provided at both sides thereof with downwardly extending side plates, and a wheel axle being provided between the two side plates.

9. An instant braking unpowered cart in accordance with claim 1, wherein said frame (100) comprises a rectangular outer frame with cross bars and/or longitudinal bars secured therein.