Dump truck and dump truck roof structure

Abstract

The present invention provides a dump truck and a dump truck roof structure. The dump truck roof structure comprises a main cover, a sub-cover, a first connecting rod, a swing arm, a second connecting rod and a driving member. The sub-cover is arranged opposite to the main cover to splice and cover the carriage. One end of the first connecting rod is rotatably connected to the sub-cover, and the other end is rotatably connected to the rear end of the main cover. The first swing arm is rotatably connected to the main cover. The second swing arm is rotatably connected to the rear end of the main cover. One end of the second connecting rod is connected to the second swing arm, and the other end is rotatably connected to the rear end of the sub-cover. One end of the driving member is rotatably connected to the rear end of the carriage, and the other end is rotatably connected to the second swing arm. The driving member is telescopic to drive the second swing arm to rotate, and the second swing arm drives the main cover and the sub-cover to move, and the sub-cover rotates relative to the main cover. The above dump truck and dump truck roof structure can ensure that the carriage is completely sealed when closed, and will not block the loading space above the carriage when opened.

Description

Technical Field

[0001] The invention relates to the field of transportation equipment and accessories thereof, in particular to a dump truck and a dump truck roof structure. Background Art

[0002] In recent years, dump truck modification and supporting parts manufacturers in various places have launched various forms of closed dump truck cover structures in response to the country's environmental protection requirements and customer functional needs. The current common dump truck cover structure can completely cover the compartment from front to back when the cover is closed, but when the cover is lifted to the front, the rear end of the cover will partially cover the loading space above the front of the compartment, thereby affecting loading. In order to avoid the rear end of the cover covering the loading space of the dump truck compartment, the size of the cover is often designed to be shorter. Therefore, when the cover is closed, there is a gap between its rear edge and the rear end of the compartment and it is no longer covered and sealed. Although this structure can make the rear end of the cover no longer cover the loading space above the front of the compartment when it is lifted to the front, it cannot completely cover the compartment after the cover is closed, and the cargo will be scattered or missed from the rear of the compartment when the vehicle is running. Summary of the invention

[0003] The purpose of the present invention is to provide a dump truck and a dump truck roof structure which can ensure that the compartment is completely sealed when closed and will not block the loading space above the compartment when opened.

[0004] A dump truck roof structure, comprising:

[0005] The main cover, a movable cover, is provided at the front end of the carriage;

[0006] A secondary cover, which is movable and arranged at the rear end of the carriage, and the secondary cover is arranged opposite to the main cover to splice and cover the carriage;

[0007] A first connecting rod, one end of which is rotatably connected to the auxiliary cover, and the other end of which is rotatably connected to the rear end of the main cover;

[0008] The swing arm comprises a first swing arm and a second swing arm, wherein one end of the first swing arm is rotatably disposed on the carriage, and the other end is rotatably connected to the main cover; one end of the second swing arm is rotatably disposed on the carriage, and the other end is rotatably connected to the rear end of the main cover;

[0009] A second connecting rod, one end of which is connected to the second swing arm, and the other end of which is rotatably connected to the rear end of the auxiliary cover;

[0010] A driving member, one end of which is rotatably connected to the rear end of the carriage, and the other end of which is rotatably connected to the swing arm. The driving member is retracted to drive the swing arm to rotate, and the swing arm drives the main cover and the auxiliary cover to move, and causes the auxiliary cover to rotate relative to the main cover.

[0011] In one embodiment, one end of the driving member away from the carriage is rotatably connected to the second swing arm, and the driving member is telescoped to drive the second swing arm to rotate.

[0012] In one embodiment, the rotatable connections at both ends of the first swing arm and the rotatable connections at both ends of the second swing arm are located at four vertices of the same parallelogram.

[0013] In one embodiment, the main cover and the auxiliary cover are both arched cover bodies.

[0014] In one embodiment, the first swing arm includes a plurality of first bends that are intersectingly arranged, and an avoidance space for avoiding the front of the vehicle is formed between the plurality of first bends.

[0015] In one embodiment, hinged portions are respectively formed at both ends of the first connecting rod, and the two ends of the first connecting rod are respectively hinged to the main cover and the auxiliary cover through the hinged portions.

[0016] In one embodiment, a clamping portion is provided at one end of the second connecting rod, and the second connecting rod is fixed to the rear end of the second swing arm.

[0017] In one embodiment, an upper limit member is installed on the side of the main cover, and a lower limit member is installed on the first swing arm or the second swing arm. The upper limit member abuts against the lower limit member to position the driving member.

[0018] In one embodiment, the dump truck roof structure is further equipped with a guide device, and the guide device is provided with a guide surface facing the frame of the vehicle compartment.

[0019] A dump truck comprises a dump truck roof cover structure, a car body and a frame. The front end of the frame is provided with a head, the car body is arranged at the rear end of the frame, and the dump truck roof cover structure is covered on the top of the car body.

[0020] When the roof structure of the dump truck is closed, the front edge of the main cover is aligned with the rear side of the front panel of the compartment, the rear edge of the main cover is aligned with the front edge of the auxiliary cover, and the rear edge of the auxiliary cover is aligned with the front edge of the rear panel of the compartment, so that the front and rear double covers can completely cover and seal the compartment.

[0021] Secondly, when the driving member is working, the main cover is opened and lifted to the front of the compartment, while the auxiliary cover is driven by the first link and the second link to flip over the main cover around the hinge point of the first link, and also moves to the front of the compartment together with the main cover. When the main cover is lifted to the front side of the front plate of the compartment, since the auxiliary cover has flipped over to the top of the main cover, the main cover and the auxiliary cover are both located in front of the front plate of the compartment, and will not cover the space above the compartment behind the front plate, and will not affect the loading of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a dump truck according to this embodiment;

[0023] Figure 2 Based on Figure 1 A schematic diagram of the three-dimensional structure of the dump truck roof structure shown;

[0024] Figure 3 Based on Figure 2 A schematic diagram of the three-dimensional structure of the first connecting rod shown;

[0025] Figure 4 Based on Figure 2 A schematic diagram of the three-dimensional structure of the second connecting rod shown;

[0026] Figure 5 Based on Figure 2 The schematic diagram of the structure of the guide device and the carriage shown;

[0027] Figure 6 Based on Figure 2 A schematic structural diagram of another state of the dump truck roof structure is shown.

[0028] The reference numerals in the accompanying drawings are explained as follows: 100, roof structure of a dump truck; 11, front of the truck; 12, compartment; 13, chassis; 110, main cover; 111, lug; 112, upper limit member; 120, auxiliary cover; 130, first connecting rod; 131, first hinged portion; 140, first swing arm; 141, first bend; 142, lower limit member; 150, second swing arm; 151, second bend; 160, second connecting rod; 161, engaging portion; 162, second hinged portion; 163, step portion; 170, driving member; 180, guide device; 181, guide surface. DETAILED DESCRIPTION

[0029] Although the present invention can be easily embodied in different forms of embodiments, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to that described herein.

[0030] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0031] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indications of these directions also change accordingly.

[0032] The preferred embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of this specification.

[0033] See also Figure 1 The present invention provides a dump truck and a dump truck roof structure.

[0034] A dump truck 10 comprises a dump truck roof structure 100, a front part 11, a compartment 12 and a chassis 13. For the convenience of description, it is now stipulated that the forward direction of the dump truck 10 is the front, and the backward direction is the rear.

[0035] The front end 11 is located at the front end of the dump truck 10. The front end 11 is provided with a cab. The carriage 12 is provided on the chassis 13. The carriage 12 is used to carry goods. The cross-sectional structure of the carriage 12 can be rectangular, U-shaped or special-shaped.

[0036] The dump truck roof structure 100 is disposed on the top of the carriage 12. The dump truck roof structure 100 can be movably disposed above the carriage 12, and the dump truck roof structure 100 can open and close the space above the carriage 12 to facilitate loading and unloading.

[0037] See also Figure 2 Specifically in this embodiment, the dump truck roof structure 100 includes a main cover 110, a sub-cover 120, a first connecting rod 130, a swing arm, a second connecting rod 160 and a driving member 170. For the convenience of description, it is now stipulated that the forward direction of the dump truck is the front, and the backward direction is the rear.

[0038] The main cover 110 is movably disposed at the front end of the carriage 12. The length of the main cover 110 is greater than the length of the auxiliary cover 120. The main cover 110 is longer, and the main cover 110 can cover most of the carriage 12. Therefore, the carriage 12 can be loaded and unloaded by opening and removing the main cover 110.

[0039] The auxiliary cover 120 is movably disposed at the rear end of the carriage 12, and the auxiliary cover 120 is disposed opposite to the main cover 110 to splice and cover the carriage 12. The auxiliary cover 120 is relatively short. The auxiliary cover 120 is located behind the main cover 110.

[0040] Specifically, the upper planes of the main cover 110 and the auxiliary cover 120 can be flat-topped, arc-topped or arched. The main cover 110 can be completely contacted and connected with the auxiliary cover 120. When the dump truck roof structure 100 is closed, the front edge of the main cover 110 is aligned with the rear side of the front plate of the compartment 12, and the rear edge of the main cover 110 is aligned with the front edge of the auxiliary cover 120. The rear edge of the auxiliary cover 120 is aligned with the front edge of the rear plate of the compartment 12. The main cover 110 and the auxiliary cover 120 form a double roof structure.

[0041] In this embodiment, the main cover 110 and the auxiliary cover 120 are both arched covers, which can increase the height of the internal bearing space of the carriage, making it easier to cover and accommodate the goods in the carriage.

[0042] In addition, sealing strips are installed around the frames of the main cover 110 and the auxiliary cover 120. When the dump truck roof structure 100 is closed, the sealing performance of the compartment 12 will be better.

[0043] One end of the first connecting rod 130 is rotatably connected to the auxiliary cover 120 , and the other end of the first connecting rod 130 is rotatably connected to the rear end of the main cover 110 .

[0044] See also Figure 3 , first hinged parts 131 are respectively provided at both ends of the first connecting rod 130, and the two ends of the first connecting rod 130 are respectively hingedly connected to the main cover 110 and the auxiliary cover 120 through the first hinged parts 131. In addition, the first connecting rod 130 is C-shaped, so that the first hinged parts 131 located at both ends of the first connecting rod 130 can be hingedly connected with the main cover 110 and the auxiliary cover 120. The first hinged part 131 can be a convex column or an axial hole. As long as the first connecting rod 130 can be hingedly connected with the main cover 110 and the auxiliary cover 120. Specifically in this embodiment, the first hinged part 131 is a convex shaft.

[0045] The swing arm includes a first swing arm 140 and a second swing arm 150. One end of the first swing arm 140 is rotatably disposed on the carriage 12, and the other end is rotatably connected to the main cover 110. Specifically, the upper and lower ends of the first swing arm 140 are rotatably connected by hinged connections. The upper end of the first swing arm 140 is hinged to both sides of the main cover 110, and the lower end of the first swing arm 140 is hinged to both sides of the carriage 12 arranged on the chassis 13.

[0046] The first swing arm 140 includes two first bends 141 arranged to intersect. An escape space for avoiding the front of the vehicle 11 is formed between the two first bends 141. When the main cover 110 rotates, the first swing arm 140 is driven to rotate. When the first swing arm 140 rotates to the position of the front of the vehicle 11, in order to avoid interference between the first swing arm 140 and the front of the vehicle 11. The first swing arm 140 is bent toward the front of the vehicle 11 so that the first swing arm 140 forms the escape space. Therefore, the front of the vehicle 11 can be in the escape space to avoid hindering the rotation of the first swing arm 140 and affecting the main cover 110 from fully rotating and opening.

[0047] In other embodiments, the first swing arm 140 may further include three, four or five first bends 141. As long as the multiple first bends 141 are connected to each other, a space for avoiding the vehicle head 11 can be formed. Alternatively, the first swing arm 140 may be linear, and the main cover 110 may be able to rotate with the first swing arm 140 as a radius. Furthermore, the first swing arm 140 may be an integrated structure or a spliced ​​structure.

[0048] One end of the second swing arm 150 is rotatably disposed on the carriage 12, and the other end is rotatably connected to the rear end of the main cover 110. Specifically, the upper and lower ends of the first swing arm 140 are rotatably connected by hinged connection. The upper end of the first swing arm 140 is hinged to both sides of the main cover 110, and the lower end of the first swing arm 140 is hinged to both sides of the carriage 12 arranged on the chassis 13. The second swing arm 150 includes two second bent portions 151.

[0049] Furthermore, in other embodiments, the second swing arm 150 may further include three, four or five second curved portions 151. Alternatively, the second swing arm 150 may also be linear, and the main cover 110 may also be able to rotate with the second swing arm 150 as a radius. Furthermore, the second swing arm 150 may be an integrated structure or a spliced ​​structure.

[0050] For convenience, the first swing arm 140 and the second swing arm 150 are respectively hingedly connected to the two sides of the main cover 110. Lugs 111 are respectively provided on the two sides of the main cover 110. A hinge hole is provided on the lug 111. The first swing arm 140 and the second swing arm 150 are respectively rotatably connected to the lug 111 through a pin shaft.

[0051] One end of the second swing arm 150 close to the main cover 110 is fixedly connected to the auxiliary cover 120. The rotation of the second swing arm 150 drives the auxiliary cover 120 to rotate together, so that the main cover 110 and the auxiliary cover 120 rotate relative to each other, so that the auxiliary cover 120 opens a certain angle relative to the main cover 110. One end of the second connecting rod 160 is connected to the second swing arm 150, and the other end is rotatably connected to the rear end of the auxiliary cover 120.

[0052] See also Figure 4 One end of the second connecting rod 160 is provided with a clamping portion 161, and the second connecting rod 160 is fixed to the rear end of the second swing arm 150. The clamping portion 161 can enhance the connection strength between the second connecting rod 160 and the second swing arm 150. It can be understood that the clamping portion 161 can also be omitted, and one end of the second connecting rod 160 is directly welded to the second swing arm 150.

[0053] The other end of the second connecting rod 160 is provided with a second hinged portion 162, and the second connecting rod 160 is hingedly connected to the rear end of the auxiliary cover 120 through the second hinged portion 162. The second hinged portion 162 can be a convex column or an axial hole. As long as the second connecting rod 160 can be hingedly connected to the auxiliary cover 120, it will be fine.

[0054] In addition, a step portion 163 is further provided at one end of the second connecting rod 160 close to the second swing arm 150. One end of the step portion close to the engaging portion 161 can be flush with the second swing arm 150, so as to facilitate the connection between the engaging portion 161 and the second swing arm 150. Similarly, the step portion enables the second hinged portion 162 to be close to the auxiliary cover 120, so as to facilitate the connection between the second hinged portion 162 and the auxiliary cover 120.

[0055] One end of the driving member 170 is rotatably connected to the rear end of the carriage 12, and the other end is rotatably connected to the second swing arm 150. Specifically, one end of the driving member 170 is hinged to the first swing arm 140 or the second swing arm 150, and the other end of the driving member 170 is hinged to the carriage 12; the driving member 170 is extended to drive the second swing arm 150 to rotate, and the second swing arm 150 drives the main cover 110 and the auxiliary cover 120 to move, and the auxiliary cover 120 rotates relative to the main cover 110. The driving member 170 can be an oil cylinder or a gas cylinder.

[0056] The rotatable connections at both ends of the first swing arm 140 and the rotatable connections at both ends of the second swing arm 150 are located at the four vertices of the same parallelogram. Specifically, the upper ends of the first swing arm 140 and the second swing arm 150 are both hinged to the left and right sides of the main cover 110, and the lower ends of the first swing arm 140 and the second swing arm 150 are both hinged to the two sides of the carriage 12. The connecting line of the upper and lower hinge points of the first swing arm 140 is parallel and equal to the connecting line of the upper and lower hinge points of the second swing arm 150. That is, the upper and lower hinge points of the first swing arm 140 and the upper and lower hinge points of the second swing arm 150 are enclosed together to form a parallelogram. Therefore, when the first swing arm 140 drives the main cover 110 to rotate, the main cover 110 can smoothly drive the second swing arm 150 to rotate, ensuring that the main cover 110 can rotate stably.

[0057] In other embodiments, the driving member 170 may also be connected to the first swing arm 140 to drive the first swing arm 140 to rotate, and the purpose of stably rotating the main cover 110 can also be achieved. Therefore, the first swing arm 140 and / or the second swing arm 150 can be connected to the driving member 170. The above dump truck roof structure 100 enables the main cover 110 and the auxiliary cover 120 to rotate relative to each other through the cooperation between the swing arm, the first connecting rod 130, the second connecting rod 160 and the driving member 170, thereby avoiding interference between the arched main cover 110 and the auxiliary cover 120.

[0058] See also Figure 2 and Figure 5 , a guide device 180 is installed on the dump truck roof structure 100. The guide device 180 is provided with a guide surface 181 facing the frame of the car body 12, and the guide surface 181 is a smooth transition. When the driving member 170 contracts, the first swing arm 140 and the second swing arm 150 drive the main cover 110 and the auxiliary cover 120 of the dump truck roof structure 100 to close toward the car body 12, and the guide device 180 can guide the main cover 110 and the auxiliary cover 120 to move smoothly and accurately to the top of the car body 12. When the dump truck is parked on a slope or the car body 12 is tilted, the dump truck roof structure 100 is prevented from being deflected from the top of the car body 12, and the top of the car body 12 cannot be completely covered, which affects the sealing of the car body 12.

[0059] It is understandable that the guide device 180 may be a plate, columnar or block structure, etc. The specific shape of the guide device 180 is not limited here, as long as it can play a guiding role in the closing process of the dump truck roof structure 100 and the car body 12.

[0060] See also Figure 6, an upper limit member 112 is installed on the side of the main cover 110, a lower limit member 142 is installed on the first swing arm 140 or the first swing arm 140, the upper limit member 112 abuts against the lower limit member 142, and the driving member 170 is positioned. When the driving member 170 extends, driving the first swing arm 140, the second swing arm 150, the main cover 110 and the auxiliary cover 120 to rotate, until the upper limit member 112 and the lower limit member 142 abut against each other, it is proved that the opening space of the main cover 110 and the auxiliary cover 120 can meet the loading and unloading requirements, and the driving member 170 stops extending. In addition, the upper limit member 112 and the lower limit member 142 abut against each other, the center of gravity of the main cover 110 falls on the first swing arm 140, and the first swing arm 140 can support the weight of the main cover 110. The driving member 170 is prevented from being stretched to support the weight of the main cover 110 and the auxiliary cover 120, which may cause damage to the driving member 170. In addition, if the driving member 170 is damaged and fails, the main cover 110 is located above the cab, which prevents the main cover 110 from falling and hitting the cab. Therefore, the upper limit member 112 cooperates with the lower limit member 142 to protect the cab.

[0061] In order to increase the strength of the upper limit member 112 and the lower limit member 142 , the upper limit member 112 and the lower limit member 142 are reinforced box structures.

[0062] In other embodiments, a limiting device may also be installed on the side of the carriage 12. When the driving member 170 is extended and retracted to the right position, the limiting device and the main cover 110 are supported.

[0063] Now, in combination with the working process of the dump truck roof structure 100, the dump truck roof structure 100 is further described:

[0064] When the driving member 170 is extended to work, it pushes the first swing arm 140 or the second swing arm 150 hinged thereto to rotate around the lower hinge point of the swing arm toward the front of the car body 12, thereby pushing the main cover 110 hinged to the upper hinge point of the swing arm to move toward the front of the car body 12; at the same time, the auxiliary cover 120 located behind the main cover 110 is driven by the second connecting rod 160 and the first connecting rod 130 to flip up toward the front of the main cover 110 around the hinge point with the first connecting rod 130. The auxiliary cover 120 rotates and moves toward the front of the carriage 12 together with the main cover 110; until the top cover is lifted to the front, the auxiliary cover 120 can be flipped to the top of the main cover 110, at which time the upper limit devices fixed on both sides of the main cover 1107 contact with the lower limit devices fixed on the first swing arm 140 or the second swing arm 150 to limit the top cover, or the first swing arm 140 or the second swing arm 150 can contact with the limit devices fixed on the side of the carriage 12 to limit the top cover;

[0065] When the driving member 170 is retracted, it pulls the first swing arm 140 or the second swing arm 150 to rotate around the hinge point toward the rear of the compartment 12, and then pushes the main cover 110 to move toward the rear of the compartment 12. At the same time, the auxiliary cover 120 that has been flipped over the main cover 110 is flipped downward toward the rear of the main cover 110 around the hinge point with the first link 130 under the joint drive of the first link 130 and the second link 160. In addition, the guide device 180 on the dump truck roof structure 100 can smoothly return the main cover 110 and the auxiliary cover 120 to achieve the sealing of the compartment 12.

[0066] The dump truck roof structure 100 of this embodiment has at least the following advantages over the conventional dump truck roof structure 100:

[0067] First, when the dump truck roof structure 100 is closed, the front edge of the main cover 110 is aligned with the rear side of the front plate of the car body 12, the rear edge of the main cover 110 is aligned with the front edge of the auxiliary cover 120, and the rear edge of the auxiliary cover 120 is aligned with the front edge of the rear plate of the car body 12, so that the front and rear double roofs can completely cover and seal the car body 12.

[0068] Secondly, when the driving member 170 is working, the main cover 110 is opened and lifted to the front of the compartment 12, while the auxiliary cover 120 is driven by the first link 130 and the second link 160 to flip over the main cover 110 around the hinge point of the first link 130, and also moves to the front of the compartment 12 together with the main cover 110. When the main cover 110 is lifted to the front side of the front plate of the compartment 12, since the auxiliary cover 120 has been flipped over to the top of the main cover 110, at this time, the main cover 110 and the auxiliary cover 120 are both located at the front side of the front plate of the compartment 12, and will not cover the space above the compartment 12 behind the front plate, and will not affect the loading of goods.

[0069] Furthermore, because the dump truck roof structure 100 is a double roof structure of a main cover 110 and a sub-cover 120, and the main cover 110 is longer and the sub-cover 120 is shorter, although the sub-cover 120 will flip over to the top of the main cover 110 during the lifting process, the overall lifting cumulative height is not high. When the main cover 110 is lifted, not only will the center of gravity of the entire dump truck not be unstable, but the height direction of the working space of the entire dump truck will not be required to be high.

[0070] Thirdly, since the dump truck roof structure 100 is a double roof structure of a main cover 110 and a sub-cover 120, the main cover 110 is not too long. Therefore, when the double roof is lifted to the front, the main cover 110 will not extend too far forward, thereby preventing the dump truck from being too long and thus preventing the dump truck from having too high a length requirement on the working space of the dump truck.

[0071] Furthermore, because the auxiliary cover 120 is also lifted forward along with the main cover 110 around its hinge point with the connecting rod 2 when the top cover is lifted, the main cover 110 can be opened to a certain angle when the car body 12 is lifted for unloading, so that the auxiliary cover 120 is higher than the upper end of the car body 12 by a certain distance. In this way, the cargo in the car body will not cause any impact damage to the auxiliary cover 120 during unloading.

[0072] By adjusting the length of the first link 130 and the second link 160, and changing the positions of the rear hinge hole of the main cover 110 and the front and rear hinge holes of the auxiliary cover 120, the height or arc arch height of the main cover 110 and the auxiliary cover 120 can be unrestricted. No matter how high the height or arc arch height of the main cover 110 is, under the action of the first link 130 and the second link 160, the auxiliary cover 120 can always be turned over to the top of the main cover 110. Therefore, the above-mentioned dump truck roof structure 100 can meet the design of various shapes of roofs and meet the use requirements of various transport goods for the roof.

[0073] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A dump truck roof structure, characterized in that: include: The main cover, a movable cover, is provided at the front end of the carriage; A secondary cover, which is movable and arranged at the rear end of the carriage, and the secondary cover is arranged opposite to the main cover to splice and cover the carriage; A first connecting rod, one end of which is rotatably connected to the auxiliary cover, and the other end of which is rotatably connected to the rear end of the main cover; The swing arm comprises a first swing arm and a second swing arm, wherein one end of the first swing arm is rotatably disposed on the carriage, and the other end is rotatably connected to the main cover; one end of the second swing arm is rotatably disposed on the carriage, and the other end is rotatably connected to the rear end of the main cover; A second connecting rod, one end of which is connected to the second swing arm, and the other end of which is rotatably connected to the rear end of the auxiliary cover; A driving member, one end of which is rotatably connected to the rear end of the carriage, and the other end of which is rotatably connected to the swing arm. The driving member is retracted to drive the swing arm to rotate, and the swing arm drives the main cover and the auxiliary cover to move, and causes the auxiliary cover to rotate relative to the main cover.

2. The dump truck roof structure according to claim 1, characterized in that: One end of the driving member away from the carriage is rotatably connected to the second swing arm, and the driving member is telescopic to drive the second swing arm to rotate.

3. The dump truck roof structure according to claim 1, characterized in that: The rotatable connections at both ends of the first swing arm and the rotatable connections at both ends of the second swing arm are located at four vertices of the same parallelogram.

4. The dump truck roof structure according to claim 1, characterized in that: The main cover and the auxiliary cover are both arched cover bodies.

5. The dump truck roof structure according to claim 1, characterized in that: The first swing arm includes a plurality of first bends arranged to intersect each other, and an avoidance space for avoiding the front of the vehicle is formed between the plurality of first bends.

6. The dump truck roof structure according to claim 1, characterized in that: Both ends of the first connecting rod are respectively provided with hinged parts, and the two ends of the first connecting rod are respectively hinged to the main cover and the auxiliary cover through the hinged parts.

7. The dump truck roof structure according to claim 1, characterized in that: A clamping portion is provided at one end of the second connecting rod, and the second connecting rod is fixed to the rear end of the second swing arm.

8. The dump truck roof structure according to claim 1, characterized in that: An upper limit member is installed on the side of the main cover, and a lower limit member is installed on the first swing arm or the second swing arm. The upper limit member abuts against the lower limit member, and the driving member is positioned.

9. The dump truck roof structure according to claim 1, characterized in that: The dump truck roof structure is also equipped with a guide device, and the guide device is provided with a guide surface facing the frame of the carriage.

10. A dump truck, characterized in that: It comprises a dump truck roof cover structure, a car body and a frame as described in any one of claims 1 to 9, wherein a head is provided at the front end of the frame, the car body is provided at the rear end of the frame, and the dump truck roof cover structure is covered on the top of the car body.

Images