CN216833732U

CN216833732U - Pallet truck

Info

Publication number: CN216833732U
Application number: CN202220623079.3U
Authority: CN
Inventors: 周韬; 刘鑫
Original assignee: Mahle Automobile Technology China Co ltd
Current assignee: Mahle Automobile Technology China Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-06-28
Anticipated expiration: 2032-03-21

Abstract

The utility model provides a novel pallet truck. This pallet truck includes: the pallet truck comprises a frame and a caster wheel installed on the frame, a handle pivotally connected to the frame, at least one wheel groove arranged on the handle and used for receiving a universal caster wheel of the pallet truck arranged above the handle when the pallet trucks are stacked, and arc-shaped wheel supporting pieces arranged on the handle and at least partially limiting the wheel groove and supporting the rolling surface of the universal caster wheel of the upper pallet truck when the pallet trucks are stacked. Therefore, the rigidity of the fixed caster wheel can be improved, and the condition that the folding of the handle is interfered with the supporting piece to influence the stacking and storage is avoided; the trolley is characterized in that the directional wheels are stored in a wheel groove formed by the reinforcing members and the frame in a horizontal state by folding the handle, and the universal wheels are stored in the wheel groove formed by the support frame in a surrounding mode to achieve stacking of the trolley, so that the storage area is saved.

Description

Pallet truck

Technical Field

The utility model relates to an equipment field is used in the commodity circulation turnover, especially relates to a pallet truck.

Background

In recent years, various wheel-type pallet trucks have become indispensable for cargo transportation. Traditional pallet truck includes the base of rectangle, and self has and piles up or nested system, can adapt to the scene and correspond when switching and pile up or retrieve the form, and the tray removes the base and generally sets up the gyro wheel, for the ease of control installation universal wheel on the base, but the universal wheel because its swing when accomodating, stacks and causes the unstability when accomodating and piles up, causes to empty. As an improvement, there is a prior art that a wheel support is arranged on a base to limit a universal wheel, as shown in fig. 1, and the arrangement has the defects that: due to the problem of the installation radius of the supporting piece, the wheel plate for installing the wheel is lack of support when being installed on the base, and the wheel plate deforms and collapses when the pallet truck is in heavy load; in order to adapt to the supporting piece, the structure of the chassis must be changed, so that the sizes of welding pieces used by the chassis are various, and the structure and welding are complicated; further, the pallet truck with the folding handle interferes with the supporting piece after the handle is folded, and the influence is piled up and is stored.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems, the present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model provides a novel pallet truck to following technical scheme has been adopted:

the pallet truck includes: the device comprises a frame, castors arranged on the frame, wherein at least one of the castors is a universal castor and is pivotally connected to a handle of the frame, the castors are in an unfolded state when the pallet truck is in a use state, and the castors are folded to a state that a plane where the castors are located is parallel to a plane where the frame is located when the pallet truck is in a storage state; at least one wheel groove for receiving a caster of a pallet truck disposed thereabove when the pallet trucks are stacked, and further, curved wheel supports are provided on the handle, the wheel supports at least partially defining the wheel groove for supporting a rolling surface of the caster of the upper pallet truck when the pallet trucks are stacked.

Further, the pallet truck further comprises a wheel plate, the wheel plate is arranged at the bottom of the frame, and the wheel plate supports the caster wheels of the pallet truck above when the pallet truck is stacked. Also, the wheel plate can be used as a support plate for mounting the wheel to provide sufficient support for load bearing.

Further, at least one wheel groove is at least partially defined by the stem of the handle.

Further, an arcuate wheel support extends from one of the longitudinal bar or the transverse bar of the handle to one of the longitudinal bar or the transverse bar.

Further, at least one lateral reinforcement member at the other end of the frame from the end of the frame where the casters are located is arranged to support at least the rolling surface of the caster of the pallet truck above in cooperation with the frame when the pallet trucks are stacked. This side is typically provided as a non-universal caster, i.e. a fixed wheel. And when setting up the tight pulley, this kind of setting can more effectual restriction this side the roll to stability when better improvement stacks.

Further, a wheel blocking member is provided on the wheel plate, the wheel blocking member being cylindrical or conical, the central axis of which coincides with the rotational axis of the caster. The height and radius of the blocking piece are determined according to the diameter of the wheel, and the blocking piece is arranged to limit the rolling of the universal caster together with the wheel supporting piece and the wheel plate.

Further, the pallet truck still includes: at least one transversely disposed stiffening member connected to the longitudinal frame members of the frame, at least one of the stiffening members providing a contact point for interaction with a fixed pallet of the pallet truck; or at least one transversely disposed stiffening member connected to the longitudinal bar of the handle, the stiffening member providing a contact point for interaction with a fixed pallet of the pallet truck. The transversely disposed reinforcement member directly provides the locking contact point, avoiding manufacturing complications that would otherwise result from a separate arrangement. And the horizontal reinforcing member with the handle provides the contact point that is used for with the fixed tray interact of pallet truck, makes the reinforcing member setting on the chassis more free, and the distance can be according to actual bearing and stress demand setting.

Further, a connector is also arranged on the frame.

Further, the connectors include a first connector and a second connector configured to connect the corresponding second connector and first connector of the front and rear pallet trucks, respectively, when the plurality of pallet trucks are connected. So that the pallet truck can be conveniently consigned by connecting the pallet truck end to end.

Further, the first connector is provided outside the universal caster-side frame of the pallet truck.

Implement the technical scheme of the utility model, following beneficial effect has at least:

1. the bearing capacity of fixedly connecting the trundles of the pallet truck and the chassis is improved, and the wheel plates are prevented from deforming and collapsing when the pallet truck is in heavy load.

2. The condition that the folding of the handle interferes with the supporting piece to influence the stacking and storing of the pallet truck with the folding handle is avoided.

3. During the storage, through folding handle to horizontality, accomodate the directive wheel in the race of constituteing by strengthening member and frame, the universal wheel is accomodate and is realized piling up of dolly in the race that the support frame encloses, saves storage area. When the trolley is used, the connector is connected with a plurality of trolleys, so that the trolleys are mounted and transported.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an axial view of a prior art pallet truck design.

Fig. 2 is an axial view of an embodiment of the present invention.

Fig. 3 is a schematic view of a stacked state of handles according to an embodiment of the present invention.

Fig. 4 is a schematic view of a stack of a plurality of identical pallet trucks of the present invention.

Fig. 5 is a schematic cross-sectional view of a plurality of identical pallet trucks stacked rear wheel spacing of the present invention.

Fig. 6 is a schematic view of an embodiment of the present invention with a trailing connector.

Description of reference numerals:

100-pallet truck;

110-a frame; 111-a transverse frame member; 112-a longitudinal frame member; 113-a reinforcing member; 114-wheel plate; 115-a support; 116-wheel groove; 117-wheel stops;

120-universal caster wheel; 121-a wheel; 122-wheel frame

130-fixed casters;

140-a handle; 141-transverse bar; 142-a longitudinal rod;

150-connector, 151-first connector; 152-second connector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As will be appreciated by those skilled in the art, the pallet truck 100 has a generally rectangular shaped frame 110 as shown in fig. 2. The frame is a rectangular base formed by welding together a transverse frame member 111 extending in parallel and two longitudinal frame members 112 connected to the transverse frame member 111 and extending in parallel. In order to simplify the manufacturing process of the pallet truck, the welding pallet truck is assembled with a minimum of components, in the present embodiment only at least one transverse reinforcement member 113 is provided in the frame 110 parallel to the transverse frame members 111, while the reinforcement member 113 extends within the space defined by the frame 110.

In the present embodiment, 4 casters are disposed at the bottom of the frame 110, including two casters 120 mounted on the same end and two casters 130 mounted on the other end. For ease of understanding, the end where the caster 120 is located is defined as the front end of the pallet truck, and the two casters include wheels 121 rotatably disposed on a wheel plate 114 via a wheel frame 122, the wheel plate 114 being connected to the frame 110. In order to increase the load-carrying capacity of the wheel, a transverse reinforcement member 113 is arranged across the width of the wheel plate and connected to the wheel plate, the design shown in fig. 1 comprising two transverse reinforcement members 113, each supporting a respective wheel plate 114. In this embodiment, a plurality of transverse stiffening members 113 may also be provided, at least one of which transverse stiffening members 113 provides a contact point for interaction with a fixed pallet of the pallet truck. The transversely disposed reinforcement member directly provides the locking contact point, avoiding manufacturing complications that would otherwise result from a separate arrangement.

Two rigid castors 130 are provided at the opposite end of the frame 110 from the castors 120, typically the side opposite the handle will be provided as a non-universal castor, i.e. a rigid wheel. In order to facilitate the spacing of the stacked pallet trucks and to make the stacking more secure, the present embodiment uses wheel grooves 116 for limiting the movement of the wheels, for receiving the corresponding wheels 121 of the casters 120 of the stacked pallet trucks 100, and for better limiting the two casters 130, a receiving groove for the caster 130 is formed in such a way that the reinforcement member 113 cooperates with the transversal frame 111, the receiving groove being arranged such that the reinforcement member 113 and the transversal frame together support the rolling surface of the caster of the pallet truck above when the pallet trucks are stacked. Further, the receiving groove is sized as a distance between the lateral frame 111 and the reinforcement member 113 at opposite sides, which is determined according to the diameter of the wheel of the rigid caster, and the distance is optimally set such that the surface of the rigid caster 130 contacts both the wheel plate and the lateral frame 111 and the lateral reinforcement member 113 when stacked. The advantage of this distance arrangement is that under the condition of self-weight and stacked bearing weight, the wheels of the fixed caster wheel are trapped in the wheel groove, and can not be trapped in the wheel groove and can not freely move on the wheel plate, so that a good positioning and anti-falling-off effect is achieved, and the state can be seen in a figure 5. Furthermore, the pallet truck can be well limited in a longitudinally parallel state, so that the limiting effect of the wheel groove 116 is better.

In order to facilitate the driving of the pallet truck 100, a handle 140 is further provided on the pallet truck, pivotally connected to the frame 110, and in a deployed state when the pallet truck is in a use state, and folded to a state where a plane on which the handle is located is parallel to a plane on which the frame 110 is located when the pallet truck is in a storage state; the advantage that sets up like this, the folding structure more is favorable to the pallet truck to stack the storage, when stacking the storage, only needs fold the horizontal state with handle 140, very big reduction its shared height of cubical space.

In the present embodiment, as will be understood in detail from fig. 2, first, the wheel groove 116 for receiving the wheel 121 of the caster 120 is defined by the support 115 and the wheel plate 114 together. As a suitable example, one side of the wheel well 116 may be formed by the frame of the handle 140 and the other side of the wheel well 116 is defined by the wheel support 115. Further, the wheel support 115 may be a strip of material, such as metal, plastic, composite, or other suitable material, that facilitates welding with the handle 130.

As shown in fig. 3, in the folded state of the handle, the pallet truck 100 is in this state for stacking. The wheel support 115 is provided in combination with an arc shape extending on the inner surface of the longitudinal frame of the handle according to the rotation radius of the caster 120, and the arc-shaped outer surface may be provided with a reinforcing member (not shown) in order to reinforce the supporting strength of the arc-shaped support 115. The wheel support 115 is welded to the handle frame and the reinforcement. Thus, the wheel support 115 extends in the space defined by the frame of the handle 140 and the lateral and/or longitudinal reinforcements. When stacked, the rolling surface of the wheel 121 of the stacked pallet truck 100 contacts the wheel plate 114 at the bottom of the wheel, while the rolling surface can also contact the wheel support 115.

Based on the structure, the utility model discloses a pallet truck 100 piles up the back, has more stable structure. Fig. 4 illustrates a stack of a plurality of identical pallet trucks 100. The wheels 121 of the upper pallet truck 100 may be oriented differently when the wheel supports 115 are stacked. The curved wheel supports 115 facilitate the angular free orientation of the casters the stacked pallet truck wheels 121 may be placed toward any angular position within the confines of the supports 115.

Since the pallet truck 100 is introduced onto the adapter pallet from the loading end during transport of the pallet truck 100, the casters of the pallet truck are in the wheel guide grooves of the pallet. A drive mechanism operates the tray to actuate the locking plate to rotate between an operative, i.e., generally vertical, state and a released, i.e., generally horizontal, state. For the pallet truck of the present invention, it is necessary to provide a member to be engaged with the locking plate at a reasonable position. In this embodiment, at least one transversely disposed stiffening member 114, the stiffening member 114 being connected to the longitudinal bar 142 of the handle 140, the stiffening member 114 providing a contact point for interaction with a fixed pallet of the pallet truck. In the operative condition, the locking plate engages with the transverse reinforcement member on the handle 140; in the released state, the locking plate is lowered, thereby releasing mechanical contact with the lateral reinforcement member on the handle 140.

The reinforcing member arranged in this way can directly provide a locking contact point, and the manufacturing complexity caused by independent arrangement is avoided. And the horizontal reinforcing member with the handle provides the contact point that is used for with the fixed tray interact of pallet truck, makes the reinforcing member setting on the chassis more free, and the distance can be according to actual bearing and stress demand setting.

Further, since the direction in which the wheels rotate is uncertain after the casters 120 are put into the wheel grooves 116 and the wheels can still roll freely, a wheel block 117 is provided on the wheel plate 114, and the wheel block is cylindrical or conical, and preferably, the central axis of the block 117 coincides with the rotation axis of the casters 120. The height and radius of the stop 117 are set to be determined according to the diameter of the wheel, and the stop 117 cooperates with the wheel support 115 to limit the rolling of the caster after the caster is placed in the wheel groove. Referring to fig. 5, in the state where the caster 120 is parallel to the longitudinal frame 112, the caster 120 is engaged with the blocking member 117, and the caster 130 is engaged with the lateral reinforcement member 113 and the lateral frame 111.

In the present embodiment, as shown in fig. 6, the pallet truck 100 is provided with a connector 150 to connect a plurality of pallet trucks, and the pallet trucks are mounted and transported. Specifically, a connector 150 is provided on the frame, the connector including a first connector 151 and a second connector 152, the first connector 151 and the second connector 152 being configured to connect the second connector and the first connector corresponding to the front and rear pallet trucks, respectively, when the plurality of pallet trucks are connected. So that the pallet truck can be conveniently consigned by connecting the pallet truck end to end. The first connector is provided on the outer side of the frame on the universal caster side of the pallet truck.

The detailed description of the present invention is the technology known to those skilled in the art. 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 it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A pallet truck comprising:

a frame (110) for supporting the frame,

casters mounted on the frame (110), at least one of the casters being configured as a castor wheel (120),

the handle (140) is pivotally connected to the frame (110), is unfolded when the pallet truck is in a use state, and is folded to a state that a plane of the handle is approximately parallel to a plane of the frame (110) when the pallet truck is in a storage state;

at least one wheel groove (116) for receiving a caster (120) of a pallet truck (100) placed above when the pallet trucks are stacked,

characterized in that curved wheel supports (115) are provided on the handle (140), the wheel supports (115) at least partially defining the wheel well (116) and supporting the rolling surface of the caster of an upper pallet truck when the pallet trucks (100) are stacked.

2. The pallet truck according to claim 1, further comprising: a wheel plate (114) disposed at the bottom of the frame (110), the wheel plate (114) supporting the caster of the upper pallet truck when the pallet trucks (100) are stacked.

3. The pallet truck according to claim 1, characterized in that the at least one wheel well (116) is at least partially defined by a bar of the handle (140).

4. The pallet truck according to claim 3, characterized in that the curved wheel support (115) extends from one of a transverse bar (141) or a longitudinal bar (142) of the handle (140) to one of the longitudinal bar (142) or the transverse bar (141).

5. Pallet truck according to claim 1 or 2, characterized in that at least one lateral stiffening member at the other end of the frame (110) than the end of the frame where the casters (120) are located is arranged to support at least the rolling surface of the fixed caster of the pallet truck above together with the frame (110) when the pallet truck (100) is stacked.

6. Pallet truck according to claim 2, characterized in that a wheel block (117) is provided on the wheel plate (114), the centre line of the wheel block (117) coinciding with the swivel axis of the castor wheel (120).

7. Pallet truck according to claim 1 or 2, characterized in that the pallet truck (100) further comprises:

at least one transversely disposed stiffening member (113), said stiffening member (113) being connected to a longitudinal frame member (112) of the frame (110), at least one of said stiffening members (113) providing a contact point for interaction with a fixed pallet of a pallet truck;

or at least one transversely disposed stiffening member (113), said stiffening member (113) being connected to the longitudinal bar (142) of the handle (140), said stiffening member (113) providing a contact point for interaction with a fixed pallet of the pallet truck.

8. Pallet truck according to claim 1 or 2, characterized in that a connector (150) is further provided on the frame (110).

9. The pallet truck according to claim 8, characterized in that said connectors (150) comprise a first connector (151) and a second connector (152), said first connector (151) and second connector (152) being configured to connect, respectively, the corresponding second connector (152) and first connector (151) of a front pallet truck and a rear pallet truck when a plurality of said pallet trucks are connected.

10. Pallet truck according to claim 9, characterized in that the first connector (151) is arranged outside the frame (110) on the side of the castor wheels (120) of the pallet truck.