Trolley device

Abstract

The embodiment of the utility model discloses a cart device which comprises a handle, a ratchet wheel, a V-shaped pawl and a trigger, and the two ends of the handle are a handheld end and a working end respectively; a clamping jaw is arranged on the ratchet wheel; the V-shaped pawl is slidably mounted on the handle and provided with a long pawl and a short pawl which are oppositely arranged, and a push rod is arranged at the closed end of the V-shaped pawl; the trigger is provided with a first abutting part and a second abutting part, and the trigger moves in the direction perpendicular to the plane where the V-shaped pawl is located, so that the first abutting part or the second abutting part abuts against the push rod. When the first abutting part abuts against the push rod, the V-shaped pawl is matched with the ratchet wheel, and the cart device pushes the wheels to rotate; when the second abutting part abuts against the push rod, the long pawl of the V-shaped pawl is matched with the ratchet wheel, the ratchet wheel and the pawl are not locked, and a worker can adjust the angle of the handle. According to the vehicle pushing device, the lever principle is adopted, the wheels can be pushed to rotate by applying small force, the difficulty that a vehicle walks again is lowered, and the efficiency of vehicle pushing operation is improved.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a trolley device. Background Technology

[0002] Underground, mine cars are mainly used to transport materials. In areas where there are no battery-powered cars or where battery-powered cars cannot operate, manual pushing of the cars is required. When pushing cars encounter track junctions, the cars are prone to getting stuck. When a heavy car is parked on the track for a long time, the track and wheels require more pushing force to start moving than when the car is pushed. In both of these situations, multiple people are needed to push the car to get it moving again, resulting in low efficiency and high manual labor intensity.

[0003] Therefore, how to improve the efficiency of cart operations while reducing the manual labor intensity of cart operations has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application proposes a trolley device to improve the efficiency of trolley operations while reducing the manual labor intensity of trolley operations.

[0005] To achieve the above objectives, this application provides a trolley device, comprising:

[0006] A handle, wherein the two ends of the handle along its length are a handheld end and a working end, respectively;

[0007] A ratchet is mounted on the working end, the axis of the ratchet is perpendicular to the length direction of the handle, and the ratchet is provided with a pawl that can extend into a wheel.

[0008] A V-shaped pawl, capable of engaging with the ratchet, has a long pawl and a short pawl arranged opposite to each other. The V-shaped pawl is slidably mounted on the handle, and the sliding direction of the V-shaped pawl is consistent with the length direction of the handle. A push rod is provided at the closed end of the V-shaped pawl.

[0009] A reset member, one end of which is connected to the push rod and / or the V-shaped pawl, and the other end of which is connected to the handle. The reset member is used to apply a pulling force to the push rod and / or the V-shaped pawl so that the push rod and / or the V-shaped pawl moves away from the ratchet.

[0010] The trigger has a first abutment and a second abutment, which are arranged side by side in a sliding direction perpendicular to the V-shaped pawl. The length of the first abutment is greater than the length of the second abutment along the sliding direction of the V-shaped pawl. The trigger can move in a plane perpendicular to the V-shaped pawl so that the first abutment or the second abutment abuts against the push rod.

[0011] Preferably, in the above-described trolley device, the first abutting portion and the second abutting portion have first teeth, and the push rod has second teeth that engage with the first teeth for limiting.

[0012] Preferably, in the above-mentioned trolley device, the end of the push rod that engages with the V-shaped pawl is provided with a third tooth, and the closed end of the V-shaped pawl has a fourth tooth that engages with the third tooth.

[0013] Preferably, in the above-described trolley device, the ratchet is rotatably connected to the handle via a bearing, the outer ring of the bearing is connected to the handle, and the inner ring of the bearing is connected to the ratchet.

[0014] Preferably, in the above-mentioned trolley device, the sliding direction of the V-shaped pawl is consistent with the length direction of the push rod, and the push rod is inclined towards the short pawl from the first end connected to the trigger to the second end of the push rod that engages with the V-shaped pawl.

[0015] Preferably, in the above-mentioned trolley device, the handle is provided with a guide channel for guiding the push rod.

[0016] Preferably, in the above-described trolley device, the number of the claws is at least two;

[0017] And / or, the number of the pawls is equal to the number of holes in the wheel.

[0018] Preferably, in the above-mentioned trolley device, a spherical limiting block is provided at the end of the handheld end, and the circumferential dimension of the spherical limiting block is larger than the circumferential dimension of the handheld end of the handle.

[0019] Preferably, in the above-described trolley device, the handheld end is in the shape of a first cylinder, the axis of which is aligned with the length direction of the handle; the working end is in the shape of a second cylinder, the axis of which is perpendicular to the length direction of the handle; and the diameter of the first cylinder is smaller than the diameter of the second cylinder.

[0020] Preferably, in the above-mentioned trolley device, the handle is a one-piece molded handle.

[0021] The cart device provided in this application includes a handle, a ratchet, a V-shaped pawl, and a trigger. The handle has a hand-held end and a working end, respectively. The ratchet is located at the working end of the handle and has a pawl that can extend into the hole of the wheel. The V-shaped pawl is slidably mounted on the handle and has a long pawl and a short pawl arranged opposite to each other. A push rod is provided at the closed end of the V-shaped pawl. The trigger has a first abutment part and a second abutment part arranged along the sliding direction of the V-shaped pawl. The length of the first abutment part is greater than the length of the second abutment part. The trigger moves in a direction perpendicular to the plane where the V-shaped pawl is located. When the first contact point abuts against the push rod, the trigger applies a pushing force to the push rod, pushing the V-shaped pawl towards the ratchet. Both the long and short pawls of the V-shaped pawl engage with the ratchet. At this time, the operator rotates the handle clockwise with the hand end, causing the handle to rotate clockwise simultaneously. The V-shaped pawl then rotates the ratchet clockwise, which in turn rotates the pawl, which in turn rotates the pawl, which in turn rotates the wheel clockwise. When the second contact point abuts against the push rod, the push rod moves away from the ratchet under the action of the elastic reset element. The long pawl of the V-shaped pawl engages with the ratchet. At this time, the operator rotates the handle counterclockwise with the hand end. The ratchet and pawl are not locked. The movement of the handle rotates the V-shaped pawl, but the V-shaped pawl does not rotate the ratchet. The ratchet is fixed to the wheel by the pawl. When the handle is rotated, there is relative movement between the ratchet and the handle, allowing the operator to adjust the angle of the handle for the next operation. Workers use the pusher device disclosed in this solution in conjunction with the wheels to push the cart. The pusher device adopts the lever principle, with the center of the ratchet as the fulcrum, the pawl as the load point, and the hand-held end as the force point, forming a force-saving lever. Workers can push the wheels to rotate by applying a small force. Compared with the method of workers directly pushing the cart in related technologies, this reduces the difficulty of getting the vehicle moving again, improves the efficiency of the pusher operation, and achieves more effective savings in manpower to get the vehicle moving again while ensuring safety, and reduces the difficulty of pushing the mine car over the initial components. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0023] Figure 1 This is a schematic diagram of the trolley device of this application;

[0024] Figure 2 This is an exploded view of the cart assembly of this application;

[0025] Figure 3 This is a top view of the trolley device of this application;

[0026] Figure 4 This is a schematic diagram of the handle of the cart device of this application;

[0027] Figure 5 This is a schematic diagram of the trolley device (without handle) of this application;

[0028] Figure 6 This is a schematic diagram of the V-shaped pawl, push rod, and trigger mechanism of the cart device of this application.

[0029] Figure 7 This is a schematic diagram of the structure of the push rod and trigger of the trolley device of this application;

[0030] Figure 8 This is a schematic diagram of the V-shaped ratchet of the trolley device of this application;

[0031] Figure 9 This is a schematic diagram of the ratchet mechanism of the trolley device of this application;

[0032] Figure 10 This is a schematic diagram of the trigger of the cart device of this application.

[0033] in:

[0034] 1-Handle; 11-Handheld end; 12-Working end; 13-Spherical limit block; 2-Ratchet; 21-Pawl; 3-V-shaped pawl; 31-Long pawl; 32-Short pawl; 33-Fourth tooth; 4-Push rod; 41-Third tooth; 5-Reset part; 6-Trigger; 61-First abutment part; 62-Second abutment part. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0036] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0037] It should be understood that the terms "system," "apparatus," "unit," and / or "module" used in this application are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0038] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0039] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0040] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0041] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0042] Please see Figures 1-10 .

[0043] Some embodiments of this application disclose a trolley device, including a handle 1, a ratchet 2, a V-shaped pawl 3, and a trigger 6, wherein,

[0044] The handle 1 is a long handle. One end of the handle 1 along its length is the hand-held end 11, which is used by the staff to hold and operate the trolley device. The other end of the handle 1 along its length is the working end 12, which is used to cooperate with the wheels.

[0045] The ratchet 2 is located at the working end 12 of the handle 1. The plane of the ratchet 2 is parallel to the length direction of the handle 1, or the ratchet 2 is located on one side of the length direction of the handle 1. The ratchet 2 is provided with a pawl 21, which can be inserted into the hole of the wheel. The ratchet 2 is connected to the hole of the wheel through the pawl 21.

[0046] V-shaped pawl 3 is mounted on handle 1 and close to working end 12. V-shaped pawl 3 engages with ratchet 2. V-shaped pawl 3 has a long pawl 31 and a short pawl 32 arranged opposite to each other. The long pawl 31 and the short pawl 32 form the two sides of V-shaped pawl 3. The open end of V-shaped pawl faces ratchet 2. A push rod 4 is provided at the closed end of V-shaped pawl 3. V-shaped pawl 3 is slidably mounted on handle 1. V-shaped pawl 3 slides along the length of handle 1. When V-shaped pawl 3 moves towards ratchet 2, both the long pawl 31 and the short pawl 32 of V-shaped pawl 3 engage with ratchet 2. When V-shaped pawl 3 moves away from ratchet 2, the long pawl 31 of V-shaped pawl 3 engages with ratchet 2.

[0047] The V-shaped pawl 3 moves away from the ratchet 2 via a reset mechanism, as shown below. Figure 2 and Figure 3 As shown, the V-shaped pawl 3 and the push rod 4 are connected to the handle 1 through the reset member 5. The reset member 5 is used to provide a pulling force to the V-shaped pawl 3 and the push rod 4. The reset member 5 is used to pull the V-shaped pawl 3 and the push rod 4 towards the trigger 6. Optionally, the reset member 5 can be set on the same side of the V-shaped pawl 3 and the push rod 4, or it can be set on both sides of the V-shaped pawl 3 and the push rod 4. The reset member 5 is used to ensure that the V-shaped pawl 3 and the push rod 4 move synchronously.

[0048] Optionally, the plane where the reset member 5 is located is parallel to the plane where the V-shaped pawl 3 is located, so as to reduce the circumferential dimension of the handle 1. The reset member 5 is a spring.

[0049] The trigger 6 has a first abutment part 61 and a second abutment part 62. The first abutment part 61 and the second abutment part 62 are arranged side by side in the sliding direction perpendicular to the V-shaped pawl 3. The length of the first abutment part 61 is greater than the length of the second abutment part 62 in the sliding direction of the V-shaped pawl 3. The trigger 6 can move in the plane direction perpendicular to the V-shaped pawl 3 to change the position of the first abutment part 61 and the second abutment part 62 so that the first abutment part 61 or the second abutment part 62 corresponds to the position of the push rod 4, thereby realizing the abutment of the first abutment part 61 or the second abutment part 62 with the push rod 4.

[0050] Optionally, the handle 1 is provided with a mounting shaft, the axis of which is perpendicular to the sliding direction of the V-shaped pawl 3, or in other words, the axis of the mounting shaft is perpendicular to the plane where the V-shaped pawl 3 is located, or in other words, the axis of the mounting shaft is parallel to the axis of the ratchet. The trigger 6 has a shaft hole that mates with the mounting shaft. The trigger 6 slides on the mounting shaft to achieve the engagement of the first abutment part 61 or the second abutment part 62 with the push rod 4.

[0051] The trigger 6 has a paddle located outside the handle 1. The user moves the trigger 6 by paddle so that the first abutment 61 or the second abutment 62 engages with the push rod 4.

[0052] When the first contact part 61 contacts the push rod 4, the first contact part of the trigger 6 applies a pushing force to the push rod 4, and the push rod 4 pushes the V-shaped pawl 3 to move towards the ratchet 2. The long pawl 31 and the short pawl 32 of the V-shaped pawl 3 both cooperate with the ratchet 2. At this time, the operator rotates the handle 1 clockwise through the hand end 11. The handle 1 drives the V-shaped pawl 3 to rotate clockwise in sync. The V-shaped pawl 3 drives the ratchet 2 to rotate clockwise, and then the ratchet 2 drives the pawl 21 to rotate. The pawl 21 drives the wheel to rotate clockwise.

[0053] When the second contact part 62 contacts the push rod 4, the push rod 4 and the V-shaped pawl 3 move away from the ratchet 2 under the action of the reset part 5. The long pawl 31 of the V-shaped pawl 3 engages with the ratchet 2, while the short pawl 32 of the V-shaped pawl 3 does not engage with the ratchet 2. At this time, the operator rotates the handle 1 counterclockwise through the hand end 11. The ratchet 2 and the pawl are not locked. The movement of the handle 1 drives the V-shaped pawl 3 to rotate, but the V-shaped pawl 3 does not drive the ratchet 2 to rotate. The handle 1 rotates relative to the ratchet 2. Since the ratchet 2 is fixed to the wheel by the pawl 21, the ratchet 2 does not rotate at this time. The operator adjusts the angle of the handle 1 to facilitate the next clockwise rotation operation.

[0054] In this embodiment, the worker is positioned at the front of the mining car and pushes the car by pressing down on the handle; the worker can also be positioned at the rear of the mining car and push the car by raising the handle.

[0055] The trolley device disclosed in this application, through the cooperation of a V-shaped pawl 3 and a ratchet 2, can enhance the force exerted by the V-shaped pawl 3 on the ratchet 2, and also improve the reliability of the V-shaped pawl 3 driving the ratchet 2. To facilitate the cooperation between the V-shaped pawl 3 and the ratchet 2, as follows... Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, the long pawl 31 and short pawl 32 of the V-shaped pawl 3 are arc-shaped to match the outer circumferential shape of the ratchet 2.

[0056] Optionally, the working end 12 of the handle 1 has a cavity for mounting the ratchet 2, the V-shaped pawl 3 and the trigger 6, so that the ratchet 2, the V-shaped pawl 3 and the trigger 6 are hidden inside the handle 1, which protects the ratchet 2, the V-shaped pawl 3 and the trigger 6 and improves the reliability of the trolley device.

[0057] Workers use the pusher device disclosed in this solution in conjunction with the wheels to push the cart. The pusher device adopts the lever principle, with the center of the ratchet 2 as the fulcrum, the pawl 21 as the pivot point, and the hand-held end 11 as the force point. The pusher device constitutes a force-saving lever, and workers can push the wheels to rotate by applying a small force. Compared with the method of workers directly pushing the cart in related technologies, it reduces the difficulty of getting the vehicle moving again, improves the efficiency of the pusher operation, and achieves more effective savings in manpower to get the vehicle moving again while ensuring safety, and reduces the difficulty of pushing the mine car over the initial components.

[0058] Optionally, when a mining car encounters a track junction or when a loaded car is parked on the track for an extended period of time, a pusher device can be installed on both sides of the mining car's wheels. Multiple pushers can work simultaneously on both sides of the mining car to get the vehicle moving again.

[0059] To save effort, the length of handle 1 can be set as long as possible. Optionally, the length of handle 1 is the distance between two adjacent wheels on the same side of the mining car.

[0060] In some embodiments, the first abutting portion 61 and the second abutting portion 62 have first teeth, and the push rod 4 has second teeth that engage with the first teeth.

[0061] In this embodiment, the first abutting part 61 and the second abutting part 62 cooperate with the second tooth of the push rod 4 through the first tooth to achieve the limiting between the first abutting part 61 and the second abutting part 62 and the push rod 4, so as to ensure that when the first abutting part 61 and the second abutting part 62 act on the push rod 4, the position between the first abutting part 61 and the push rod 4, and the position between the second abutting part 62 and the push rod 4 will not change, thereby improving the stability of the trolley device.

[0062] The first abutment portion 61 and the second abutment portion 62 may only have first teeth at the positions corresponding to the push rod 4. The first abutment portion 61 and the second abutment portion 62 have first teeth in the circumferential direction, such as... Figure 10 As shown, the first abutting part 61 and the second abutting part 62 are gear-shaped.

[0063] The push rod 4 and the V-shaped pawl 3 can be an integrated structure or they can be separate structures.

[0064] In embodiments where the push rod 4 and the V-shaped pawl 3 are an integral structure, the push rod 4 and the V-shaped pawl 3 are integrally formed, or the push rod 4 and the V-shaped pawl 3 are welded together, or the push rod 4 and the V-shaped pawl 3 are riveted together, or the push rod 4 and the V-shaped pawl 3 are snapped together, or other connection methods are used. In this embodiment, at least one of the push rod 4 and the V-shaped pawl 3 is connected to the reset member 5.

[0065] In embodiments where the push rod 4 and the V-shaped pawl 3 are separate structures, the push rod 4 and the V-shaped pawl 3 are not connected, such as... Figure 7 As shown, the end of the push rod 4 that engages with the V-shaped pawl 3 is provided with a third tooth 41, and the closed end of the V-shaped pawl 3 has a fourth tooth 33 that engages with the third tooth 41. The push rod 4 and the V-shaped pawl 3 are engaged by the third tooth 41 and the fourth tooth 33. In this embodiment, both the push rod 4 and the V-shaped pawl 3 are connected to the reset member 5.

[0066] The third tooth 41 can be directly set at the end of the push rod 4, or it can be a gear-shaped structure set on one side of the push rod 4; the fourth tooth 33 can be set only at the closed end of the V-shaped pawl 3, or it can be a gear-shaped structure set on the side of the V-shaped pawl 3 near the push rod 4.

[0067] The third tooth 41 at the end of the push rod 4 that mates with the V-shaped pawl 3 and the second tooth at the end of the push rod 4 that mates with the trigger 6 can have the same or different structures.

[0068] The ratchet 2 is rotatably connected to the handle 1 via a bearing. Specifically, the outer ring of the bearing is connected to the handle 1, and the inner ring of the bearing is connected to the ratchet 2. The connection between the inner ring of the bearing and the ratchet 2 is such that the inner ring of the bearing is fitted over the ratchet 2, and both ends of the ratchet 2 protrude from the inner ring of the bearing in the axial direction, so as to facilitate the connection between the ratchet 2 and the push rod 4 and the pawl 21.

[0069] In some embodiments of this solution, the sliding direction of the V-shaped pawl 3 deviates from the axis of the ratchet 2. Optionally, the V-shaped pawl 3 deviates from the axis of the ratchet 2 towards the direction of the short pawl 32.

[0070] The length direction of the push rod 4 is consistent with the sliding direction of the V-shaped pawl 3. Specifically, the push rod 4 is inclined towards the short pawl 32 from the end connected to the trigger 6 towards the end connected to the V-shaped pawl 3. The push rod 4 pushes the V-shaped pawl 3 to move, which can improve the reliability of the separation of the short pawl 32 of the V-shaped pawl 3 from the ratchet 2 and help the handle 1 of the trolley device to rotate counterclockwise.

[0071] In order to improve the stability of the engagement between the push rod 4 and the V-shaped pawl 3 and the trigger 6, the handle 1 of the trolley device disclosed in this application has a guide channel for guiding the movement of the push rod 4, ensuring that the push rod 4 can only move along the length direction of the push rod 4.

[0072] In some embodiments, the number of pawls 21 is at least two; and / or, the number of pawls 21 is equal to the number of holes in the wheel.

[0073] The more holes the pawl 21 has in contact with the wheel, the higher the reliability of driving the wheel to rotate. Moreover, the more pawls 21 there are, the less force each pawl 21 bears, which can extend the service life of the pawl 21 to a certain extent.

[0074] To prevent the user's hand from slipping off the handle 1 during use, this design provides a spherical limiting block 13 at the end of the handheld end 11. The diameter of the spherical limiting block 13 is larger than the diameter of the handle 1. When the user holds the handheld end 11 of the handle 1, the outer side of the user's hand contacts the spherical limiting block 13, which can improve the comfort of operation to a certain extent.

[0075] The limiting block at the end of the handheld end 11 is not limited to a spherical shape, but can also be other shapes, such as a circular plate or a rectangle.

[0076] like Figure 3 and Figure 4 As shown, the handheld end 11 is a first cylindrical shape, and the working end 12 is a second cylindrical shape. The axis of the first cylindrical shape is aligned with the length direction of the handle 1, and the axis of the second cylindrical shape is perpendicular to the length direction of the handle 1. The diameter of the first cylindrical shape is smaller than the diameter of the second cylindrical shape, and there is a smooth transition between the handheld end 11 and the working end 12. This design not only provides installation space for the ratchet 2, the V-shaped pawl 3, and the trigger 6, but also ensures the strength of the working end 12, while reducing the diameter of the handheld end 11, making it convenient for the operator to hold.

[0077] Preferably, the handle 1 is a one-piece molded handle, which does not affect the strength of the handle 1.

[0078] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A trolley device, characterized in that, include: Handle (1), the two ends of the handle (1) in the length direction are the hand-held end (11) and the working end (12). A ratchet (2) is installed on the working end (12). The axis of the ratchet (2) is perpendicular to the length direction of the handle (1). The ratchet (2) is provided with a pawl (21) that can extend into the wheel. V-shaped pawl (3) can cooperate with the ratchet (2) and has a long pawl (31) and a short pawl (32) arranged opposite to each other. The V-shaped pawl (3) is slidably mounted on the handle (1) and the sliding direction of the V-shaped pawl (3) is consistent with the length direction of the handle (1). The closed end of the V-shaped pawl (3) is provided with a push rod (4). A reset member (5) is provided, one end of which is connected to the push rod (4) and the V-shaped pawl (3), and the other end of which is connected to the handle (1). The reset member (5) is used to apply a pulling force to the push rod (4) and the V-shaped pawl (3) so that the push rod (4) and the V-shaped pawl (3) move away from the ratchet (2). The trigger (6) has a first abutment (61) and a second abutment (62). The first abutment (61) and the second abutment (62) are arranged side by side in the sliding direction perpendicular to the V-shaped pawl (3). The length of the first abutment (61) is greater than the length of the second abutment (62) in the sliding direction of the V-shaped pawl (3). The trigger (6) can move in the plane direction perpendicular to the V-shaped pawl (3) so that the first abutment (61) or the second abutment (62) abuts against the push rod (4).

2. The trolley device according to claim 1, characterized in that, The first abutting part (61) and the second abutting part (62) have first teeth, and the push rod (4) has second teeth that are engaged with the first teeth.

3. The trolley device according to claim 1, characterized in that, The push rod (4) has a third tooth (41) at one end that engages with the V-shaped pawl (3), and the closed end of the V-shaped pawl (3) has a fourth tooth (33) that engages with the third tooth (41).

4. The trolley device according to claim 1, characterized in that, The ratchet (2) is rotatably connected to the handle (1) via a bearing. The outer ring of the bearing is connected to the handle (1), and the inner ring of the bearing is connected to the ratchet (2).

5. The trolley device according to claim 1, characterized in that, The sliding direction of the V-shaped pawl (3) is consistent with the length direction of the push rod (4), and the push rod (4) is inclined towards the short pawl (32) from the first end connected to the trigger (6) to the second end of the push rod (4) that cooperates with the V-shaped pawl.

6. The trolley device according to claim 1, characterized in that, The handle (1) is provided with a guide channel for guiding the push rod (4).

7. The trolley device according to claim 1, characterized in that, The number of the claws (21) is at least two; And / or, the number of the pawls (21) is equal to the number of holes in the wheel.

8. The trolley device according to claim 1, characterized in that, The end of the handheld end (11) is provided with a spherical limiting block (13), the circumferential dimension of which is greater than the circumferential dimension of the handheld end (11) of the handle (1).

9. The trolley device according to claim 1, characterized in that, The handheld end (11) is in the shape of a first cylinder, the axis of which is consistent with the length direction of the handle (1), and the working end (12) is in the shape of a second cylinder, the axis of which is perpendicular to the length direction of the handle (1), and the diameter of the first cylinder is smaller than the diameter of the second cylinder.

10. The trolley device according to claim 1, characterized in that, The handle (1) is a one-piece molded handle.

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