CN111993987A

CN111993987A - Tarpaulin telescopic structure for carriage and vehicle comprising tarpaulin telescopic structure

Info

Publication number: CN111993987A
Application number: CN202010921493.8A
Authority: CN
Inventors: 姜菲菲; 王义全; 寇春欣; 艾锋; 薛丽芳; 赵震
Original assignee: Dezhou Vocational and Technical College
Current assignee: Dezhou Vocational and Technical College
Priority date: 2020-08-31
Filing date: 2020-09-04
Publication date: 2020-11-27

Abstract

The utility model relates to a tarpaulin extending structure for carriage belongs to car standby equipment technical field, and this structure includes the bracing piece that N removed along carriage length direction, connects through the tarpaulin between the bracing piece that links to each other, N bracing piece is connected through the fork structrual joint is cut through the same respectively along carriage length direction's both sides, realizes N bracing piece synchronous motion through the concertina movement of two sets of fork mechanisms of cutting. The supporting rods of the tarpaulin telescopic structure moving on the carriage are connected through the two groups of scissors mechanisms, the two groups of scissors mechanisms can synchronously move to realize the synchronous movement of the supporting rods, the telescopic process of the supporting rods is quick, and the working efficiency of the telescopic mechanism can be effectively improved. Meanwhile, the scissor fork mechanism is simple in structure, easy to integrate and modularize, and convenient to install and maintain.

Description

Tarpaulin telescopic structure for carriage and vehicle comprising tarpaulin telescopic structure

Technical Field

The utility model belongs to the technical field of car standby equipment, specifically relate to a tarpaulin extending structure and contain vehicle of this structure for carriage.

Background

The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.

The muck truck is mainly used for short-distance transportation of building materials such as gravels and the like, mostly works at night, and is indispensable equipment for current urban construction. However, the slag car is easy to have the problems of slag block falling, dust raising and the like in the urban driving process, so that the road surface is polluted, the air quality is reduced, the urban environment is influenced, and meanwhile, the driving safety of other vehicles and pedestrians on the road surface is also influenced.

The inventor finds that: in order to solve the problems, the prior art adopts a method of covering a carriage with tarpaulin to prevent loading and unloading objects such as muck, sandstone and the like from leaking. The existing telescopic vehicle hood generally adopts a steel wire rope, a chain and the like as circulating pull ropes to expand or contract the hood cloth, but the steel wire rope and the chain are generally longer, are easy to break and have low structural precision and stability; the chains on the two sides have poor synchronism, so that the tarpaulin stretching mechanism is easy to be stuck, and the working reliability is poor; the structure is comparatively complicated, and the installation is complicated, and manufacturing cost is higher.

Disclosure of Invention

To the technical problem that prior art exists, this disclosure provides a sediment car is with tarpaulin telescopic machanism and contain vehicle of this mechanism can realize the high-efficient, stable operation of sediment car tarpaulin telescopic machanism. Meanwhile, the whole tarpaulin stretching mechanism is simple to process and manufacture, low in cost, convenient to install and maintain and easy to produce in a modularized mode.

The utility model discloses an at least embodiment has provided a tarpaulin extending structure for carriage, and this structure includes the bracing piece that N removed along carriage length direction, connects through the tarpaulin between the adjacent bracing piece, N bracing piece is connected through the same fork structure of cutting respectively along carriage length direction's both sides, realizes N bracing piece synchronous motion through the concertina movement of two sets of fork mechanisms of cutting.

Furthermore, guide rails are arranged on the carriage along the two sides in the length direction, the support rods are U-shaped support rods, and two longitudinal rods of each U-shaped support rod slide on the guide rails.

Furthermore, two longitudinal rods of the U-shaped supporting rod are detachably connected with the roller frame, a first roller and a second roller are arranged on the roller frame along the height direction, and the guide rail is arranged between the first roller and the second roller.

Furthermore, the last supporting rod, close to the tail direction of the carriage, of the N supporting rods is a straight rod, and the straight rod is not in contact with the guide rail.

Further, be equipped with the mounting panel at the carriage front portion, install a lead screw casing and a fixing support respectively in mounting panel width direction's central line both sides, be equipped with ball in the lead screw casing, connect screw nut on the ball the top of lead screw casing is equipped with rectangular shape hole, it includes the many connecting rods of first many connecting rods and second to cut fork mechanism, and first many connecting rod tip is connected with screw nut rotates, and the tip of the many connecting rods of second passes through fixing support to be fixed on the mounting panel.

Furthermore, the supporting rod is provided with a bolt hole penetrating through the top surface of the supporting rod, the scissor fork structure is arranged below the supporting rod, and the supporting rod is rotatably connected with the first multiple connecting rods and the second multiple connecting rods in the scissor fork structure through bolts.

Furthermore, the screw nut is connected with a stud capable of moving in the elongated hole, and the upper end and the lower end of the stud are respectively provided with threads.

Further, fixing support includes "nearly" font base and the boss of taking the screw thread, the boss is installed in the top of "nearly" font base, it installs on the mounting panel to "nearly" font base detachably.

Furthermore, a driving motor is installed in the middle of the mounting plate, an output shaft of the driving motor is connected with a driving bevel gear, ends of lead screws located in the shells on the two sides are respectively connected with a first driven bevel gear and a second driven bevel gear, and the first bevel gear and the second bevel gear are arranged on the two sides of the driving bevel gear and are respectively meshed with the driving bevel gear.

Further, the length of the elongated hole can meet the requirement of the two end limit positions of the screw nut during working.

At least one embodiment of the present disclosure also provides a vehicle including a compartment for carrying cargo, the compartment including a tarpaulin extension structure for the compartment of any one of the above.

The beneficial effects of this disclosure are as follows:

(1) the supporting rods of the tarpaulin telescopic structure moving on the carriage are connected through the two groups of shearing fork mechanisms, the two groups of shearing fork mechanisms can synchronously move in a telescopic mode to realize synchronous movement of the supporting rods, the telescopic process of the supporting rods is quick, and the working efficiency of the telescopic mechanism can be effectively improved. Meanwhile, the scissor fork mechanism is simple in structure, easy to integrate and modularize, and convenient to install and maintain.

(2) This disclosed tarpaulin extending structure is through adopting bevel gear transmission and ball screw transmission, job stabilization, and the transmission effect is good, can two sets of operating condition who cuts fork mechanism of accurate control, makes the two motion state keep unanimous, has effectively avoided two sets of mechanism work to be inconsistent to cause whole tarpaulin extending mechanism jamming.

(3) This openly set up the bracing piece in carriage and realize being connected of bracing piece and the guide rail on the carriage through two sets of gyro wheels, effectively reduced the quantity of gyro wheel, retrencied the complexity of mechanism, made its installation more convenient. The roller is internally provided with the bearing, so that the friction resistance of the roller during movement on the guide rail is reduced, and the running smoothness of the supporting rod is improved.

(4) The utility model discloses a bracing piece that is close carriage afterbody among a plurality of bracing pieces adopts the form of a straight-bar, does not be connected with the guide rail, ensures that a plurality of bracing pieces can cover the carriage afterbody when cutting fork mechanism and drive and stretch, realizes the full coverage of whole carriage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic structural view of a tarpaulin stretching mechanism for a carriage of a muck truck provided in an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a ball screw mechanism provided in the embodiment of the present disclosure;

fig. 3 is a schematic full-section structural view of a ball screw mechanism provided in the embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view A-A of the ball screw mechanism provided in FIG. 2;

FIG. 5 is a schematic structural diagram of a fixing support according to an embodiment of the disclosure;

FIG. 6 is a schematic structural view of a slider-crank telescoping mechanism provided in the embodiments of the present disclosure;

fig. 7 is a schematic view of a connection structure of a support rod and a connection plate according to an embodiment of the disclosure;

fig. 8 is a schematic diagram of a fixing plate structure provided in the embodiment of the present disclosure;

fig. 9 is a schematic view of a connection structure of the support rod, the fixing plate and the guide rail according to the embodiment of the disclosure.

The notation in the figure is:

1-carriage, 2-mounting plate, 3-driving motor, 4-coupler, 5-ball screw mechanism, 6-protective plate, 7-slider-crank telescoping mechanism, 8-guide rail, 51-end cap, 52-bearing I, 53-screw, 54-ball, 55-screw nut, 56-fixing screw, 57-left bevel gear, 58-right bevel gear, 59-platen, 510-ball screw mounting shell, 511-driving bevel gear bracket, 512-driving bevel gear, 513-bearing II, 514-press ring I, 515-fixing nut, 516-stud, 517-fixing support, 518-flat key, 71-lower connecting rod I, 72-press rivet bolt I, 73-support rod I, 74-upper connecting rod, 75-a second press riveting bolt, 76-a second lower connecting rod, 77-a second support rod, 78-a fixing plate, 79-a roller, 710-a second pressing ring and 711-a third bearing.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

In the description of the present disclosure, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure.

Specific embodiments of the present disclosure are described in detail below with reference to the following drawings:

as shown in fig. 1, an embodiment of the present disclosure provides a tarpaulin stretching mechanism for a carriage of a muck truck, which mainly includes: the device comprises a carriage 1, a mounting plate 2, a driving motor 3, a coupler 4, a ball screw mechanism 5, a protective plate 6, a slider-crank telescopic mechanism 7 and a guide rail 8. The mounting panel sets up the front end in the carriage, and guide rail 8 installs in carriage length direction's both sides, and driving motor 3, shaft coupling 4 and ball screw mechanism 5 set up and constitute power rotational system on the mounting panel, and wherein the anterior top in carriage is equipped with protection shield 6 for the power transmission system of protection setting on the mounting panel is equipped with a plurality of spinal branch vaulting poles in proper order along carriage length direction, be equipped with on the bracing piece and cut fork mechanism, ball screw mechanism 5 and bracing piece constitution slider-crank mechanism 7, the telescopic machanism through cutting fork mechanism drives the bracing piece and slides along guide rail 8 on the carriage.

As shown in fig. 2-3, a drive bevel gear bracket 511 is arranged at the middle position of the mounting plate, a drive bevel gear 512 is rotatably fixed inside the drive bevel gear bracket through a second bearing 513, wherein the second bearing 513 is used for being fixed through a first compression ring 514 and a fixed nut 515, and the driving motor 3 is connected with the drive bevel gear 512 through a coupling 4; further, a ball screw mounting housing 510 is respectively provided at both sides of the drive bevel gear support 511, the housing is fixed to a mounting plate, end caps 51 are provided at both ends of the ball screw mounting housing 510, a screw 53 is fixed to the inside of the ball screw mounting housing 510 through a bearing 52, balls 54 are provided on the screw, a pressure plate 59 provided at one end of the screw 53 near the drive bevel gear support 511 extends outside the ball screw mounting housing 510, and the left screw end is connected to a left bevel gear 57 through a flat key 518 and a fixing screw 56, the right screw end is connected to a right bevel gear 58, and the left bevel gear 57 and the right bevel gear 58 are engaged with the drive bevel gear 512, so that the screws at both sides can be simultaneously driven to rotate by the rotation of the drive bevel gear 512, and the left and right bevel gears are connected to the two sets of screws 53 through the flat key 518 and the fixing screw 56, the transmission and distribution of the torque are realized.

Further, as shown in fig. 2 and 4, the top of the ball screw mounting housing 510 in this embodiment is provided with a long hole, the screw 53 inside the ball screw mounting housing 510 is rotatably connected with a screw nut 55 through a ball 54, a screw hole is processed in the middle of the top of the screw nut 55, a stud 516 is connected through the screw hole, threads are processed at the upper end and the lower end of the stud 516, a nut is processed in the middle, the lower end threads are assembled with the screw hole of the screw nut 55, the upper end threads are rotatably connected with an upper connecting rod 74 in the scissors mechanism, so that the stud 516 is driven to move along the long hole through the screw nut 55, the width of the long hole is in clearance fit with the diameter of the middle smooth section of the stud 516, so as to play a role of guiding and limiting, wherein the length of the long hole is required to meet the two-pole limit position requirements of the stud 516 during operation, the height of the upper connection plate 74 is secured.

As shown in fig. 6, in this embodiment, a plurality of support rods 73 are arranged along the length direction of the carriage, the support rods 73 are U-shaped support rods, the support rods 73 can move along the guide rail 8 on the carriage, and the support rods 73 are connected together through two sets of scissors mechanisms, and the two sets of scissors mechanisms are symmetrically arranged on two sides of the center line of the support rods.

The scissors mechanism is composed of an upper connecting rod 74 and a lower connecting rod 71, wherein the upper connecting rod 74 or the lower connecting rod 71 is formed by hinging a plurality of rotating rods, the free ends of the upper connecting rod 74 and the lower connecting rod 71 which are not connected with a supporting rod 73 are connected together through a second press riveting bolt 75, see fig. 2, the upper connecting rod 74 and the lower connecting rod 71 are connected with the supporting rod 73 in a mode that bolt holes penetrating through the top surface are formed in the supporting rod, the upper connecting rod 74 and the lower connecting rod 71 are connected through a first press riveting bolt 72, and meanwhile, a bolt penetrates through the bolt holes in the supporting rod and is connected with the first press riveting bolt 72, see fig. 7, so that the bolt is arranged inside the supporting rod 73, and scraping abrasion to tarpaulin caused by the.

Further, the end part of the upper connecting rod 74 close to the front part of the carriage is fixed on the stud 516, the end part of the lower connecting rod 71 close to the front part of the carriage is fixed on the mounting plate through a fixed support 517, the fixed support is fixed on the mounting plate, as shown in fig. 5, the fixed support 517 consists of two parts, a lower 'n' -shaped base and a boss with threads above are arranged below, holes are processed on the base and used for being fixedly connected with the mounting plate 2, and the boss mainly plays a role in ensuring the height of the lower connecting rod 71.

It should be noted that the center line of the fixed support 517 is on the plane defined by the axis of the screw 53 and the axis of the stud 516, is parallel to the axis of the stud 516, and is located outside the end cap 51. The position of the fixing holder 517 determines the connection position of the support rod 73 and the upper connection plate 74, and the height of the lower connection plate 71 is secured by a boss formed at the upper end thereof.

Therefore, in the above embodiment, the screw nut 55 and the stud 516 move along the elongated hole at the upper end of the ball screw mounting housing 510 to drive the upper connecting plate 74 in the scissors mechanism to move, and the support rod 73 moves horizontally along the guide rail 8 on the carriage, thereby achieving the telescopic function of the scissors mechanism. Meanwhile, the upper connecting rods of the two groups of scissors fork mechanisms on the supporting rods are respectively connected to the screw nuts on the two groups of screws on the mounting plate, and the two screws synchronously rotate, so that the two groups of scissors fork mechanisms synchronously extend and retract, and the synchronous movement of the supporting rods is realized.

It should be noted that, in the embodiment, the second support rod 77, which is far away from the front portion of the carriage and close to the tail portion of the carriage 1, is different from the first support rod 73 and is a straight rod, and is not connected to the guide rail 8, and the second support rod 77 is pushed to slide by the second lower connecting rod 76 to ensure that the second support rod 77 can cover the tail portion of the carriage when the telescopic mechanism 7 is extended, so that the covering and sealing effects are ensured.

Further, as shown in fig. 8 and 9, two longitudinal rods of the support rods in this embodiment are hollow, the top of the fixing plate 78 is inserted into the longitudinal rod of the support rod 73 and fixed together by bolts, two sets of rollers 79 are arranged on the fixing frame 78 in the height direction, the rollers are fixed on the fixing frame through a third bearing 711 and a second pressing ring 710, wherein the guide rail 8 is installed between the two sets of rollers 79, so that the support rods can smoothly slide along the guide rail in the telescopic process through the bearings and the rollers, and the structure is simple and convenient to install.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present disclosure and not to limit, although the present disclosure has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present disclosure without departing from the spirit and scope of the technical solutions, and all of them should be covered in the claims of the present disclosure.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims

1. The utility model provides a tarpaulin extending structure for carriage, its characterized in that includes the bracing piece that N removed along carriage length direction, connects through the tarpaulin between the adjacent bracing piece, N bracing piece is connected through the fork structrual joint is cut through the same respectively along carriage length direction's both sides, and the concertina movement through two sets of fork mechanisms of cutting realizes N bracing piece synchronous motion.

2. A tarpaulin extension structure for a vehicle body of claim 1, wherein a guide rail is provided at both sides of the vehicle body in a longitudinal direction, the support bar is a U-shaped support bar, and two longitudinal bars of the U-shaped support bar are slid on the guide rail.

3. The tarpaulin extension and contraction structure for a vehicle body of claim 2, wherein two vertical bars of the U-shaped support bar are detachably coupled to the roller frame, the roller frame is provided with a first roller and a second roller in a height direction, and the guide rail is installed between the first roller and the second roller.

4. The tarpaulin stretching structure for a vehicle body of claim 2, wherein the last of the N support bars in the direction of the rear portion of the vehicle body is a straight bar, and the straight bar is not in contact with the guide rail.

5. The tarpaulin stretching structure for a vehicle body of claim 1, wherein a mounting plate is provided at a front portion of the vehicle body, a screw housing and a fixing bracket are respectively provided at both sides of a center line in a width direction of the mounting plate, a ball screw is provided in the screw housing, a screw nut is connected to the ball screw, a strip-shaped hole is provided at a top portion of the screw housing, the scissor mechanism comprises a first plurality of link rods and a second plurality of link rods, an end portion of the first plurality of link rods is rotatably connected to the screw nut, and an end portion of the second plurality of link rods is fixed to the mounting plate through the fixing bracket.

6. A tarpaulin extension structure for a vehicle body of claim 5, wherein the support rod is provided with bolt holes penetrating the top surface thereof, the scissor structure is disposed under the support rod, and the support rod is rotatably connected to the first and second pluralities of connecting rods of the scissor structure by bolts.

7. A tarpaulin extension and retraction structure for a vehicle body of claim 5, wherein a screw bolt is connected to the screw nut and is movable in the elongated hole, and the upper and lower ends of the screw bolt are respectively provided with a thread.

8. A tarpaulin extension for vehicle body of claim 5, wherein said fixing bracket comprises a base of a shape of a Chinese character 'ji' and a boss with screw thread, said boss is installed above the base of a shape of a Chinese character 'ji', and said base of a shape of a Chinese character 'ji' is detachably installed on the installation plate.

9. The tarpaulin stretching structure for a vehicle body of claim 5, wherein a driving motor is installed at the middle of the installation plate, an output shaft of the driving motor is connected with a driving bevel gear, ends of lead screws located in the casings at both sides are respectively connected with a first driven bevel gear and a second driven bevel gear, and the first bevel gear and the second bevel gear are disposed at both sides of the driving bevel gear and respectively engaged with the driving bevel gear.

10. A tarpaulin extension structure for a vehicle body of claim 5, wherein the length of the elongated hole is capable of satisfying the requirement of the two extreme positions of the screw nut during operation.

11. A vehicle comprising a compartment for carrying cargo, said compartment comprising a tarpaulin extension for a compartment of any of the preceding claims 1 to 10.