CN203211343U - Pivotally steerable four-wheeled hand truck - Google Patents
Pivotally steerable four-wheeled hand truck Download PDFInfo
- Publication number
- CN203211343U CN203211343U CN 201320211523 CN201320211523U CN203211343U CN 203211343 U CN203211343 U CN 203211343U CN 201320211523 CN201320211523 CN 201320211523 CN 201320211523 U CN201320211523 U CN 201320211523U CN 203211343 U CN203211343 U CN 203211343U
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- China
- Prior art keywords
- roller
- front wheel
- vehicle frame
- rear roller
- hand truck
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- Expired - Fee Related
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Abstract
The utility model relates to a four-wheeled hand truck, in particular to a pivotally steerable four-wheeled hand truck which comprises a frame, handles, a fixed left roller, a fixed right roller, a steerable front roller and a steerable rear roller. The handles are connected with the frame, the fixed left roller and the fixed right roller are arranged in the middles of two sides of the frame, the steerable front roller and the steerable rear roller are arranged in the middle of the front end and the middle of the rear end of the frame, and rotary linkage mechanisms which can synchronously rotate in opposite directions are arranged between a front roller support and a rear roller support. The pivotally steerable four-wheeled hand truck has the advantages that when the four-wheeled hand truck is linearly and forwardly pushed, a rolling shaft of the front roller and a rolling shaft of the rear roller are adjusted and then are parallel to a rolling shaft of the left roller and a rolling shaft of the right roller, so that the four-wheeled hand truck can easily keep linearly advancing; when turned by 90-degree angles under the adjustment action, the rolling shaft of the front roller and the rolling shaft of the rear roller are perpendicular to the rolling shaft of the left roller and the rolling shaft of the right roller, and accordingly the four-wheeled hand truck can steer pivotally.
Description
Technical field
The utility model relates to a kind of four-wheeled hand truck, but a kind of four-wheeled hand truck of pivot stud particularly.
Background technology
Hand barrow be a kind of in the warehouse, goods yard or logistics centre often can see be used for carrying out the transportation means that the short distance goods transports, hand barrow has economy, characteristics easy to use.Hand barrow has two kinds of three-wheel and four-wheels, and four-wheeled hand truck is carried out more steadily, load-carrying ability is higher.The wheel that existing common four-wheeled hand truck structure generally includes vehicle frame, the handle that is connected with vehicle frame and is arranged on the vehicle frame below, described wheel generally includes a pair of front-wheel and pair of rear wheels, front-wheel and trailing wheel are arranged side by side, four-wheeled hand truck turns to for convenience, have at least one group to be cardan wheel in front-wheel and the trailing wheel, for front-wheel and two groups of four-wheeled hand trucks that all adopt cardan wheel of trailing wheel, though it turns to flexibly, can realize that original place 360 degree turn to, but when straight line is carried out forward, direction is difficult for controlling, especially when parcel is housed; And for having only one group to be the four-wheeled hand truck of cardan wheel in front-wheel and the trailing wheel, though direction is more easily controlled when straight line is carried out forward comparatively speaking, but can't be implemented in the original place do 360 the degree turn to, turning to as need is that bigger space will be arranged, this in the warehouse or the goods yard this to the exigent occasion of space utilization, will cause the decline of space availability ratio, improve warehouse cost.A kind of four-wheeled hand truck is also arranged, be provided with the fixation side roller at middle part, the vehicle frame left and right sides, front and back respectively are provided with fixedly front wheel and fixedly rear roller in the middle of the both sides, described fixedly front wheel and fixedly the wheel footpath of rear roller less than the wheel footpath of fixation side roller, this four-wheeled hand truck move ahead or fallback procedures in, use two fixation side rollers and fixedly front wheel and fixedly in the rear roller land, when turning to or do 360 degree on the spot, needs turn to, need firmly fixedly front wheel and fixedly rear roller all be lifted away from ground, only stay two fixation side rollers to land and go-cart is turned to, when being loaded with weight in the go-cart, turn to and to require great effort very much, labour intensity is big, and not steady, occurs safety misadventure easily.
Summary of the invention
But the purpose of this utility model be to provide in order to overcome the deficiencies in the prior art a kind of can do in the original place very effortlessly 360 degree turn to can the pivot stud that direction is more easily controlled when straight line is carried out forward four-wheeled hand truck.
To achieve these goals, but the utility model discloses a kind of four-wheeled hand truck of pivot stud, comprise vehicle frame, the handle that is connected with vehicle frame and the roller that is arranged on the vehicle frame below, it is characterized in that: described roller comprises the left wheel that is arranged on vehicle frame both sides midway location, right roller and be arranged on before and after the vehicle frame two sections midway location front wheels and rear roller, described left wheel and right roller are fixed idler whell, front wheel and rear roller are installed in respectively on front wheel support and the rear roller support, vertical rotation axis and back vertical rotation axis before front wheel support and rear roller support are respectively equipped with, described front wheel support and rear roller support are arranged on the vehicle frame rotationally, be provided with the rotation link gear between described front wheel support and the rear roller support, described rotation link gear makes described front wheel support and rear roller support drive front wheel respectively and rear roller rotates synchronously with opposite direction.
Device of the present utility model by be arranged on vehicle frame both sides midway location fixing left wheel, right roller and be arranged on the rotatable front wheel of vehicle frame rear and front end midway location and rear roller, when straight line is carried out forward, the roller bearing of regulating front wheel and rear roller parallels with the roller bearing of left wheel, right roller, and four-wheeled hand truck can keep straight line to move ahead at an easy rate; When the needs four-wheeled hand truck turns to, roller bearing according to the angular adjustment front wheel that turns to and rear roller is regulated between 0 ~ 90 degree, when the roller bearing 90 of regulating front wheel and rear roller is spent, this moment front wheel and rear roller roller bearing and left wheel, right roller roller bearing vertical mutually, but the four-wheeled hand truck pivot stud.
As further setting of the present utility model, transmission gear and final drive gear before being respectively equipped with on vertical rotation axis and the back vertical rotation axis before described, be provided with the interlock tooth bar between transmission gear and the final drive gear before described, the two ends interlock tooth of described interlock tooth bar is separately positioned on the both sides of interlock tooth bar, and the two ends interlock tooth of described interlock tooth bar constitutes described rotation link gear with preceding transmission gear and final drive gear engagement respectively.The linkage structure mechanism of said structure is simple, practical, and for ease of maintenaince, and cost is lower.
Further arrange as of the present utility model, transmission gear and final drive gear are arranged on the vehicle frame below before described, be equipped with surface bearing between transmission gear and final drive gear and the bottom of frame before described, described bottom of frame is provided with the tooth bar guide pipe, described interlock tooth bar free-running fit is located in the tooth bar guide pipe, and described preceding vertical rotation axis is or/and be connected with operating handle on the vertical rotation axis of back.After being provided with surface bearing and operating handle, turn to adjusting lighter; After being provided with the tooth bar guide pipe, the action of interlock tooth bar is more smooth and easy, and it is more reliable to link, and is difficult for blocking.
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in further detail.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment structural representation;
Accompanying drawing 2 is the utility model specific embodiment structure elevational schematic view;
Elevational schematic view when but accompanying drawing 3 is the four-wheeled hand truck pivot stud state of pivot stud.
Concrete enforcement
As shown in Figure 1, 2, but the four-wheeled hand truck of pivot stud comprises vehicle frame 1, the handle 2 that is connected with vehicle frame 1 and the roller that is arranged on vehicle frame 1 below, described roller comprises left wheel 3, the right roller 4 that is arranged on vehicle frame 1 both sides midway location and is arranged on vehicle frame 1 rear and front end midway location front wheel 5 and 6, four wheels of rear roller land simultaneously.Left wheel 3 and right roller 4 are fixed idler whell, are fixed in the middle of 1 liang of side bottom of vehicle frame by left wheel support 7 and right rolling wheel support 8; Front wheel 5 and rear roller 6 are installed in respectively on front wheel support 9 and the rear roller support 10, vertical rotation axis 901 and back vertical rotation axis 1001 before front wheel support 9 and rear roller support 10 are respectively equipped with, before vehicle frame 1 rear and front end midway location is provided with, back axis hole, before, back axis hole is provided with anterior cannula 11, rear sleeve 12, transmission gear 902 and final drive gear 1002 before preceding vertical rotation axis 901 and back vertical rotation axis 1001 are respectively equipped with, anterior cannula 11 is passed in the upper end of preceding vertical rotation axis 901 and back vertical rotation axis 1001, rear sleeve 12 is arranged on the vehicle frame 1 front wheel support 9 and rear roller support 10 rotationally, preceding transmission gear 902 and final drive gear 1002 are in vehicle frame 1 below, described vehicle frame 1 bottom is provided with tooth bar guide pipe 13, tooth bar guide pipe 13 can one in front and one in back respectively be established one, it is more stable to lead, interlock tooth bar 14 free-running fits are located in the tooth bar guide pipe 13, the two ends interlocks tooth 1401 of interlock tooth bar 14 is separately positioned on the both sides of 1401 14 in interlock tooth, and the two ends interlock tooth 1401 that described interlock tooth is 1401 14 constitutes the rotation link gears with preceding transmission gear 902 and final drive gear 1002 engagements respectively.The both sides that the two ends interlock tooth 1401 of 1401 14 in tooth of interlock is separately positioned on 1401 14 in interlock tooth are to make described front wheel support 9 and rear roller support 10 drive front wheel 5 respectively and rear roller 6 rotates synchronously with opposite direction in order to rotate link gear.Flexible more and convenient in order to turn to, in this specific embodiment, between preceding transmission gear 902 and final drive gear 1002 and vehicle frame 1 bottom, be equipped with the surface bearing (not shown), and be connected with operating handle 15 at preceding vertical rotation axis 901 or back vertical rotation axis 1001, also can on preceding vertical rotation axis 901 and back vertical rotation axis 1001, all be connected with operating handle 15.
Claims (3)
1. but the four-wheeled hand truck of a pivot stud, comprise vehicle frame, the handle that is connected with vehicle frame and the roller that is arranged on the vehicle frame below, it is characterized in that: described roller comprises the left wheel that is arranged on vehicle frame both sides midway location, right roller and be arranged on vehicle frame rear and front end midway location front wheel and rear roller, described left wheel and right roller are fixed idler whell, front wheel and rear roller are installed in respectively on front wheel support and the rear roller support, vertical rotation axis and back vertical rotation axis before front wheel support and rear roller support are respectively equipped with, described front wheel support and rear roller support are arranged on the vehicle frame rotationally, be provided with the rotation link gear between described front wheel support and the rear roller support, described rotation link gear makes described front wheel support and rear roller support drive front wheel respectively and rear roller rotates synchronously with opposite direction.
2. but the four-wheeled hand truck of pivot stud according to claim 1, it is characterized in that: transmission gear and final drive gear before being respectively equipped with on vertical rotation axis and the back vertical rotation axis before described, be provided with the interlock tooth bar between transmission gear and the final drive gear before described, the two ends interlock tooth of described interlock tooth bar is separately positioned on the both sides of interlock tooth bar, and the two ends interlock tooth of described interlock tooth bar constitutes described rotation link gear with preceding transmission gear and final drive gear engagement respectively.
3. but the four-wheeled hand truck of pivot stud according to claim 2, it is characterized in that: transmission gear and final drive gear are arranged on the vehicle frame below before described, be equipped with surface bearing between transmission gear and final drive gear and the bottom of frame before described, described bottom of frame is provided with the tooth bar guide pipe, described interlock tooth bar free-running fit is located in the tooth bar guide pipe, and described preceding vertical rotation axis is or/and be connected with operating handle on the vertical rotation axis of back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320211523 CN203211343U (en) | 2013-04-23 | 2013-04-23 | Pivotally steerable four-wheeled hand truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320211523 CN203211343U (en) | 2013-04-23 | 2013-04-23 | Pivotally steerable four-wheeled hand truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203211343U true CN203211343U (en) | 2013-09-25 |
Family
ID=49200908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320211523 Expired - Fee Related CN203211343U (en) | 2013-04-23 | 2013-04-23 | Pivotally steerable four-wheeled hand truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203211343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192860A (en) * | 2013-04-23 | 2013-07-10 | 王金虎 | Four-wheeled hand truck capable of achieving pivot steering |
| CN112585054A (en) * | 2018-07-23 | 2021-03-30 | 彼得罗·劳达尼 | Low-position bidirectional trolley |
-
2013
- 2013-04-23 CN CN 201320211523 patent/CN203211343U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192860A (en) * | 2013-04-23 | 2013-07-10 | 王金虎 | Four-wheeled hand truck capable of achieving pivot steering |
| CN112585054A (en) * | 2018-07-23 | 2021-03-30 | 彼得罗·劳达尼 | Low-position bidirectional trolley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20210423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |