An instant braking non-powered trolley

Abstract

The present invention discloses an instant braking non-powered trolley, comprising: a frame, a running system, a gripping assembly and a brake assembly; the running system is arranged at the bottom of the frame, the running system comprises a first wheel group and a second wheel group; the brake system comprises a clamping member fixedly connected to the second wheel group and a hook rotatably connected to the frame, the hook clamps the clamping member to lock the second wheel group, the gripping assembly is movably and non-detachably connected to one end of the hook away from the clamping member, and a reset spring is further arranged between the hook and the frame. The brake system maintains a locked state when there is no external force input from the gripping assembly. The brake system in a normally locked state can prevent the vehicle from slipping and sliding backward. Pressing the gripping assembly during walking can make the external force on the brake system disappear immediately, so that the moving trolley can be braked immediately, ensuring driving safety.

Description

Technical Field

[0001] The invention relates to the technical field of track construction transportation equipment, and in particular to an instant braking unpowered trolley. Background Art

[0002] During the track construction process, due to the long construction area and long distance, it is often necessary to use a push flatbed truck to transport small materials, tools and equipment. However, there are many cross-operations in the track area, and the number of personnel and equipment is large. As a result, when pushing or pulling the push flatbed truck, frequent braking is required to avoid construction personnel or equipment.

[0003] Existing hand-pushed flatbed trucks usually rely on deadweight or manual brakes to achieve braking. These braking mechanisms or methods do not provide timely braking feedback, and are prone to slipping and sliding during rail transportation and parking, posing a huge safety hazard to production safety. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides an instant braking non-powered trolley, which can brake instantly when the trolley is moving and prevent the trolley from slipping when parked, making the use of the non-powered trolley safer.

[0005] The present invention provides a technical solution: an instant braking non-powered trolley, comprising: a frame, a running system, a grip assembly and a brake assembly;

[0006] The running system is arranged at the bottom of the frame, and comprises a first wheel set and a second wheel set, wherein the first wheel set and the second wheel set are respectively close to two ends of the frame, and the first wheel set and the second wheel set have the same width;

[0007] The brake assembly includes a clamping part fixedly connected to the second wheel set and a hook rotatably connected to the frame, the hook clamps the clamping part to lock the second wheel set, the holding assembly is movably and non-detachably connected to the end of the hook away from the clamping part, when traveling, the holding assembly presses the end of the hook away from the clamping part so that the hook is disengaged from the clamping part, thereby unlocking the second wheel set, and a return spring is also arranged between the hook and the frame.

[0008] The above technical solution has the following beneficial effects: the brake assembly can be linked with the grip assembly, and the brake assembly remains locked when there is no external force input from the grip assembly. The brake assembly in a normally locked state can prevent the vehicle from slipping and sliding backward. When the grip assembly is released during walking, the external force on the brake assembly disappears immediately, and the moving trolley can be braked immediately, thereby ensuring driving safety.

[0009] Furthermore, the first wheel group includes two independent first rollers, the second wheel group includes two independent second rollers, the spacing between the two first rollers is consistent with the width of the track to be traveled, and the spacing between the two second rollers is consistent with the width of the track to be traveled. The two first rollers and the two second rollers can correspond to two rails respectively, so that the trolley can travel normally on the track.

[0010] Furthermore, the clamping member is a toothed disc fastened to the inner side of the second roller, and the inner sides of the two second rollers are fastened with toothed discs, and the end of the hook overlaps the upper part of the toothed disc and matches the tooth groove of the toothed disc. The toothed disc has continuous tooth grooves, so that the hook can be clamped into the toothed disc within a small displacement, thereby enabling the second roller to be instantly clamped when braking.

[0011] Furthermore, a fixing piece extending downward is provided at the bottom of the frame corresponding to the hook, a rotating shaft is provided on the fixing piece, and a rotating hole rotatably connected to the rotating shaft is provided on the hook. The hook moves around the rotating shaft to lock and release the toothed disc.

[0012] Furthermore, hooks are provided at the bottom of the frame corresponding to the two toothed discs, and the gripping assembly includes a crossbar higher than the frame, and both ends of the crossbar are provided with vertical bars extending downward, and the two vertical bars are respectively connected to the corresponding hooks. The gripping assembly can control the two second rollers at the same time, so that the start and stop of the trolley are more stable.

[0013] Furthermore, a limiting ring is provided on the frame corresponding to the vertical rod, and the vertical rod passes through the limiting ring and is connected to the hook. The limiting ring can limit the force direction of the grip assembly on the hook, so that the hook can quickly respond to the action of the grip assembly.

[0014] Furthermore, the return spring includes a compression spring and a tension spring, the tension spring is located between the hook and the frame, the compression spring is located below the hook, a fixing frame is provided at the bottom of the frame corresponding to the compression spring, and the fixing frame extends to below the hook.

[0015] Furthermore, a supporting ear seat for mounting the first roller and the second roller is provided at the bottom of the frame, and the supporting ear seat includes a top plate and a side plate, and downwardly extending side plates are provided on both sides of the top plate, and a wheel axle is provided between the two side plates.

[0016] Furthermore, the vehicle frame comprises a rectangular outer frame, in which transverse rods and / or longitudinal rods are fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of an embodiment of the present invention docking with a track;

[0020] Figure 3 A top view of an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the structure of a grip assembly in an embodiment of the present invention;

[0022] Figure 5 is a cross-sectional view of the second roller in an embodiment of the present invention;

[0023] Figure 6 is a side view of the second roller in an embodiment of the present invention;

[0024] Figure 7 It is a side view of the first roller in the embodiment of the present invention.

[0025] Reference numerals: frame 100 , limiting ring 110 , supporting ear seat 120 , first roller 200 , second roller 300 , hook 400 , compression spring 410 , fixing frame 411 , tension spring 420 , fixing member 430 , toothed disc 440 , holding assembly 500 , mounting fork 510 . DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0028] like Figure 1-7 As shown, this embodiment provides an instant brake non-powered trolley, comprising: a frame 100 for carrying materials or workers, a travel system, a grip assembly 500 and a brake assembly;

[0029] The running system is arranged at the bottom of the frame 100, and the running system includes a first wheel set and a second wheel set, wherein 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 have the same width;

[0030] The brake assembly includes a clamping part fixedly connected to the second wheel set and a hook 400 rotatably connected to the frame 100, the hook 400 clamps the clamping part to lock the second wheel set, and the holding assembly 500 is movably and non-detachably connected to the end of the hook 400 away from the clamping part. When traveling, the holding assembly 500 presses the end of the hook 400 away from the clamping part so that the hook 400 is disengaged from the clamping part, thereby unlocking the second wheel set. A return spring is also provided between the hook 400 and the frame 100. When the holding assembly 500 is released, the hook 400 is again clamped into the clamping part under the action of the return spring to lock the second wheel set.

[0031] The brake assembly can be linked with the grip assembly 500, and the brake assembly remains locked when there is no external force input from the grip assembly 500. The brake assembly in the normally locked state can prevent the vehicle from slipping and sliding backward. When the grip assembly 500 is released during walking, the external force on the brake assembly disappears immediately, and the moving trolley can be braked immediately, ensuring driving safety.

[0032] In order to reduce the deadweight of the frame 100 and ensure the force bearing capacity of the frame 100 , the frame 100 includes a rectangular outer frame, and transverse rods and / or longitudinal rods are fixed in the rectangular outer frame.

[0033] See also Figure 1 , 2 , 5, 6 and 7, in order to ensure that the first wheel group and the second wheel group can cross the track, the first wheel group includes two independent first rollers 200, and the second wheel group includes two independent second rollers 300. The width of the first roller 200 and the second roller 300 matches the width of a single steel rail, so that the first roller 200 and the second roller 300 can move on the track without leaving the track. The spacing between the two first rollers 200 is consistent with the width of the track to be traveled, and the spacing between the two second rollers 300 is consistent with the width of the track to be traveled. The two first rollers 200 and the two second rollers 300 can correspond to two steel rails respectively, so that the trolley can travel normally on the track.

[0034] See also Figure 1-2Furthermore, in order to enable the first roller 200 and the second roller 300 to rotate independently at the bottom of the frame 100 without being disconnected from the frame 100, a supporting ear seat 120 for mounting the first roller 200 and the second roller 300 is provided at the bottom of the frame 100, and the supporting ear seat 120 includes a top plate and a side plate, and side plates extending downward are provided on both sides of the top plate, and a wheel axle is provided between the two side plates.

[0035] See also Figure 1-2 As a preferred embodiment, the unlocking member is a toothed disc 440 fastened to the inner side of the second roller 300. The inner sides of the two second rollers 300 are fastened with toothed discs 440. The end of the hook 400 overlaps the upper part of the toothed disc 440 and matches the tooth groove of the toothed disc 440. The toothed disc 440 has continuous tooth grooves, so that the hook 400 can be inserted into the toothed disc 440 within a small displacement, thereby enabling the second roller 300 to be instantly locked when braking. In this embodiment, the toothed disc 440 preferably has 12 teeth, a tooth width of 25 mm, a tooth thickness of 16 mm, a tooth top circle diameter of φ180, and a tooth root circle diameter of φ150.

[0036] See also Figure 1 In order to make the hook 400 rotatably connected to the frame 100, a fixing member 430 extending downward is provided at the bottom of the frame 100 corresponding to the hook 400, and a rotating shaft is provided on the fixing member 430, and a rotating hole rotatably connected to the rotating shaft is provided on the hook 400. The hook 400 moves around the rotating shaft to achieve the locking and release 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.

[0037] See also Figure 1 As a preferred embodiment, the bottom of the frame 100 is provided with hooks 400 corresponding to the two toothed discs 440, and the hooks are flat rods. The grip assembly 500 includes a crossbar higher than the frame 100, and both ends of the crossbar are provided with vertical rods extending downward, and the two vertical rods are respectively connected to the corresponding hooks 400. The grip assembly 500 can control the two second rollers 300 at the same time, so that the start and stop of the trolley are more stable. The end of the vertical rod is provided with a mounting fork 510 corresponding to the rod.

[0038] See also Figure 1 , 3 As a preferred embodiment, a limiting ring 110 is provided on the frame 100 corresponding to the vertical rod, and the vertical rod passes through the limiting ring 110 and is connected to the hook 400. The limiting ring 110 can limit the force direction of the grip assembly 500 on the hook 400, so that the hook 400 can quickly respond to the action of the grip assembly 500.

[0039] See also Figure 1 As a preferred embodiment, the return spring includes a compression spring 410 and a tension spring 420, and the connection points of the compression spring 410 and the tension spring 420 on the hook 400 are both located between the pin and the holding assembly, and the tension spring 420 is located between the hook 400 and the frame 100. The compression spring 410 is located below the hook 400, and a fixing frame 411 is provided at the bottom of the frame 100 corresponding to the compression spring 410, and the fixing frame 411 extends to the bottom of the hook 400.

[0040] As another preferred embodiment, in order to facilitate the use of the above-mentioned trolley on a flat ground outside the track, a foldable first and second land-running wheel sets are further provided at the bottom of the frame. The lowest points of the first and second land-running wheel sets in the folded state are higher than the lowest point of the running system, and the lowest points of the first and second land-running wheel sets after being unfolded are lower than the lowest point of the running system. The first land-running wheel set is located between the two first rollers, and the second land-running wheel set is located between the two second rollers. The first land-running wheel set includes two first running wheels, which are symmetrically arranged along the central axis of the frame, and the second land-running wheel set includes two second running wheels, which are also symmetrically arranged along the central axis of the frame, and the first running wheels and the second running wheels are respectively connected to the frame through a folding bracket. A locking member is provided between the folding bracket and the frame. When it is needed, the two first running wheels and the two second running wheels are fully unfolded and locked and fastened with the frame, so that the first and second land-running wheel sets can ground to support the frame and run, thereby enabling the frame to run on land outside the track. Furthermore, in order to realize the braking function when walking on land, the axle of the second walking wheel and the axle of the second roller are detachably connected with a detachable coupling. After the second walking wheel is unfolded and locked, it is connected to the second roller through the detachable coupling, so that the second walking wheel can rotate synchronously with the second roller, and then the second walking wheel can be braked by the brake assembly.

[0041] In the description of this application, it should be understood that the terms in this application are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically limited.

[0042] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the specification of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, systems and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An instant braking unpowered trolley, characterized in that: include: A frame (100), a running system, a grip assembly (500) and a brake assembly; The running system is arranged at the bottom of the frame (100), and comprises a first wheel group and a second wheel group, wherein the first wheel group and the second wheel group are respectively close to two ends of the frame (100), and the first wheel group and the second wheel group have the same width; The brake assembly comprises a clamping member fixedly connected to the second wheel set and a hook (400) rotatably connected to the frame (100); the hook (400) clamps the clamping member to lock the second wheel set; the holding assembly (500) is movably and non-detachably connected to an end of the hook (400) away from the clamping member; when the vehicle is traveling, the hook (400) is pressed by the holding assembly (500) to disengage the hook (400) from the clamping member, thereby unlocking the second wheel set; and a return spring is further provided between the hook (400) and the frame (100); The first wheel group comprises two independent first rollers (200), the second wheel group comprises two independent second rollers (300), the spacing between the two first rollers (200) is consistent with the width of the track to be traveled, and the spacing between the two second rollers (300) is consistent with the width of the track to be traveled; A foldable first and second land-running wheel sets are also provided at the bottom of the frame, wherein the lowest points of the first and second land-running wheel sets in the folded state are higher than the lowest point of the running system, and the lowest points of the first and second land-running wheel sets after unfolding are lower than the lowest point of the running system; The first land wheel set includes two first running wheels, which are symmetrically arranged along the central axis of the frame, and the second land wheel set includes two second running wheels, which are also symmetrically arranged along the central axis of the frame, and the first running wheels and the second running wheels are respectively connected to the frame through folding brackets; The wheel axle of the second traveling wheel and the wheel axle of the second roller are detachably connected with a detachable coupling.

2. The instant brake non-powered trolley according to claim 1, characterized in that: The clamping member is a toothed disc (440) that is fastened to the inner side of the second roller (300), and the inner sides of the two second rollers (300) are both fastened with a toothed disc (440), and the end of the hook (400) overlaps the upper part of the toothed disc (440) and matches the tooth groove of the toothed disc (440).

3. An instant brake unpowered trolley according to any one of claims 1-2, characterized in that: A fixing member (430) extending downward is provided at the bottom of the vehicle frame (100) corresponding to the hook (400); a rotating shaft is provided on the fixing member (430); and a rotating hole rotatably connected to the rotating shaft is provided on the hook (400).

4. The instant brake non-powered trolley according to claim 3, characterized in that: The bottom of the frame (100) is provided with hooks (400) corresponding to the two toothed discs (440), and the holding assembly (500) comprises a crossbar higher than the frame (100), and both ends of the crossbar are provided with vertical bars extending downwards, and the two vertical bars are respectively connected to the corresponding hooks (400).

5. The instant brake non-powered trolley according to claim 4, characterized in that: A limiting ring (110) is provided on the vehicle frame (100) corresponding to the vertical rod, and the vertical rod passes through the limiting ring (110) and is connected to the hook (400).

6. The instant brake non-powered trolley according to claim 1, characterized in that: The return spring comprises a compression spring (410) and a tension spring (420), wherein the tension spring (420) is located between the hook (400) and the frame (100), and the compression spring (410) is located below the hook (400). A fixing frame (411) is provided at the bottom of the frame (100) corresponding to the compression spring (410), and the fixing frame (411) extends to below the hook (400).

7. The instant brake non-powered trolley according to claim 5, characterized in that: A supporting ear seat (120) for mounting the first roller (200) and the second roller (300) is arranged at the bottom of the frame (100), and the supporting ear seat (120) comprises a top plate and a side plate, and side plates extending downward are arranged on both sides of the top plate, and a wheel axle is arranged between the two side plates.

8. The instant brake non-powered trolley according to claim 1, characterized in that: The vehicle frame (100) comprises a rectangular outer frame, in which a transverse rod and / or a longitudinal rod is fixed.

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