CN209938425U

CN209938425U - Automatic hood device

Info

Publication number: CN209938425U
Application number: CN201920353120.8U
Authority: CN
Inventors: 谭科华; 徐晓翠; 欧阳红琳; 唐宇
Original assignee: Panzhihua University
Current assignee: Panzhihua University
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-01-14
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses an automatic hood device with complete covering, which comprises a carriage with an opening at the top, a fixed rod, a traction rod, a movable rod group, a sliding part and a driving device for driving the traction rod to do reciprocating motion; one end of the carriage close to the vehicle head is a connecting end, and the other end of the carriage far away from the vehicle head is a free end; the fixed rod is fixedly arranged at the connecting end of the carriage; the first connecting end of the movable rod group is connected with the fixed rod through a first connecting piece, and the second connecting end of the movable rod group is connected with the traction rod through a second connecting piece; the fixed rod and the traction rod both cross the top of the carriage, and the traction rod reciprocates in the length direction of the carriage through the sliding part; the moving rod group consists of a plurality of moving rods which are longitudinally arranged, and two adjacent moving rods are connected through a third connecting piece; when the movable rod group is unfolded, the traction rod is positioned at the free end of the carriage. The automatic covering device is simple in structure and convenient to operate, can automatically cover the carriage completely by the car tarpaulin, and can automatically contract to facilitate loading and unloading of goods by personnel.

Description

Automatic hood device

Technical Field

The utility model relates to a vehicle accessory technical field, concretely relates to automatic hood device.

Background

When the tarpaulin and the tarpaulin of freight train are used in coordination, need personnel to arrive on the freight train car case usually, insert the tarpaulin pole one by one and put or collect, carry out ligature or dismantlement with tarpaulin and tarpaulin pole again. The personnel climb the carriage from top to bottom, not only waste time and energy, cause the installation accident moreover easily.

Patent document No. CN208325027U discloses a fully automatic truck hood retracting device. The motor rotates to drive the roller and the take-up pulley to rotate, the rotating directions of the roller and the take-up pulley are consistent, and the linear speeds of the roller and the take-up pulley are consistent. The roller is positioned at the top of the hood, the axial direction of the roller is consistent with the advancing direction of the truck, the tarpaulin arranged on the roller is folded and unfolded along with the rotation of the roller, and the moving direction of the tarpaulin is vertical to the axial direction of the roller. Above-mentioned technical scheme, tarpaulin can only shelter from the carriage side, has the shortcoming that can not cover completely.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a cover complete automatic hood device is provided.

The utility model provides a technical scheme that its technical problem adopted is: an automatic hood device comprises a carriage with an opening at the top, and further comprises a fixed rod, a traction rod, a movable rod group, a sliding piece and a driving device for driving the traction rod to do reciprocating motion;

one end of the carriage, which is close to the vehicle head, is a connecting end, and the other end of the carriage, which is far away from the vehicle head, is a free end; the fixed rod is fixedly arranged at the connecting end of the carriage; the first connecting end of the movable rod group is connected with the fixed rod through a first connecting piece, and the second connecting end of the movable rod group is connected with the traction rod through a second connecting piece;

the fixed rod and the traction rod both span the top of the carriage, and the traction rod reciprocates in the length direction of the carriage through the sliding part;

the moving rod group consists of a plurality of moving rods which are longitudinally arranged, and two adjacent moving rods are connected through a third connecting piece; when the movable rod group is unfolded, the traction rod is positioned at the free end of the carriage.

Furthermore, the number of the sliding parts is two, and the two ends of the traction rod and the two sliding parts are respectively located on two outer side surfaces in the length direction of the carriage.

Further, the sliding part comprises a sliding groove and a traction wheel; the sliding groove is transversely and fixedly arranged on the outer side surface of the carriage in the length direction; the traction wheel is arranged at the end part of the traction rod; the sliding groove is matched with the traction wheel in a rolling manner.

Furthermore, the driving device comprises a driving motor, a speed reducer, a first steering fixed pulley, a second steering fixed pulley, a first fixed pulley, a second fixed pulley, a first traction cable and a second traction cable;

the side surface of the carriage, which is close to the vehicle head, is a connecting surface, and the driving motor and the speed reducer are both arranged on the connecting surface;

the speed reducer is connected with a rotating shaft of the driving motor and is provided with a first output shaft and a second output shaft which have opposite rotating directions and the same rotating speed; a first wire roller and a second wire roller are fixedly arranged on the first output shaft and the second output shaft respectively;

a plane which is vertical to the connecting surface and passes through the center of the connecting surface is a vertical middle vertical plane, and the first steering fixed pulley and the second steering fixed pulley are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane; the first steering fixed pulley and the second steering fixed pulley are respectively and fixedly arranged at the connecting end of the carriage;

the first fixed pulley and the second fixed pulley are symmetrically arranged by taking the vertical median plane as a symmetrical plane and are respectively and fixedly arranged at the free end of the carriage;

the height from the first steering fixed pulley to the sliding groove is equal to the height from the first fixed pulley to the sliding groove;

the first wire roller, the first steering fixed pulley and the first fixed pulley are in transmission connection through a first traction rope, and the second wire roller, the second steering fixed pulley and the second fixed pulley are in transmission connection through a second traction rope;

the first traction cable is fixedly connected with one end of the traction rod, and the second traction cable is fixedly connected with the other end of the traction rod.

Further, the carriage top is spanned to the carriage group, the both ends of carriage are located carriage length direction's two lateral surfaces respectively, the both ends of carriage all are provided with the gyro wheel, gyro wheel and spout roll cooperation.

The two limiting pieces are respectively and fixedly arranged on two outer side surfaces in the length direction of the carriage and are arranged in parallel with the sliding chute, and the two limiting pieces are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane;

the limiting piece comprises an upper plate, a lower plate, a supporting strip and a plurality of vertical rollers; an installation space is formed between the upper plate and the lower plate; the supporting strips are fixedly arranged on the outer side surface of the carriage in the length direction along the length direction and are positioned in the mounting space;

a first limiting groove and a second limiting groove are respectively arranged in the length direction of the upper plate and the lower plate, the first limiting groove and the second limiting groove are both positioned in the same vertical plane with the sliding groove, and the traction rod and the movable rod respectively penetrate through the first limiting groove and the second limiting groove;

the vertical roller is vertically arranged in the installation space and is respectively sleeved with the traction rod and the moving rod, and the height of the vertical roller is smaller than that of the installation space; the vertical roller is matched with the supporting strip in a rolling way.

The two first locking devices and the two second locking devices are respectively and fixedly arranged on two outer side surfaces in the length direction of the carriage;

the first locking device is close to the connecting end of the carriage, and the second locking device is close to the free end of the carriage; the two first locking devices and the two second locking devices are respectively and symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane;

when the movable rod group is contracted, the movable rod group and the traction rod form a contraction rod group, and the first locking device is positioned on one side of the contraction rod group on the opposite side of the fixed rod; when the movable rod group is unfolded, the second locking device is positioned at one side of the second connecting end of the movable rod group, which is close to the traction rod.

Furthermore, the first locking device and the second locking device respectively comprise a hook, a connecting buckle and a spiral arm;

an outer side plate is fixedly arranged between the upper plate and the lower plate in the length direction, and a fixed block is arranged on the outer side plate; the rotary arm is hinged with the fixed block and is rotationally connected with the connecting buckle; the couple is fixed to be set up on carriage length direction's lateral surface, and with the connector link hook.

Furthermore, the sliding chute comprises an upper supporting plate, a lower supporting plate and rolling parts, wherein the upper supporting plate and the lower supporting plate are respectively and fixedly arranged on the outer side surface of the carriage in the length direction along the length direction and are respectively vertical to the outer side surface of the carriage in the length direction;

a movement space is formed between the upper supporting plate and the lower supporting plate; the rolling piece is arranged in the motion space and is parallel to the outer side surface of the carriage in the length direction; the rolling piece divides the movement space into a first connecting space and a second connecting space, the first connecting space is connected with the outer side surface of the carriage in the length direction, and the traction wheel and the roller are arranged in the first connecting space;

the rolling piece comprises an upper limiting strip and a lower limiting strip; the upper limiting strip is fixedly arranged on the lower surface of the upper supporting plate, the lower limiting strip is fixedly arranged on the upper surface of the lower supporting plate, a sliding space is formed between the upper limiting strip and the lower limiting strip, and the sliding space is used for communicating the first connecting space with the second connecting space;

bearings are arranged at the end part of the traction rod close to the traction wheel and the end part of the movable rod close to the roller, and are in rolling fit with the sliding space;

the length direction of the upper supporting plate is provided with a slideway communicated with the second connecting space, and the traction rod and the movable rod respectively penetrate through the slideway and extend into the second connecting space.

And furthermore, the device also comprises a spring, one end of the spring is connected with the fixed block, and the other end of the spring is connected with the back of the rotating arm opposite to the hook.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a cover complete automatic hood device. The automatic covering device is simple in structure and convenient to operate, can automatically cover the carriage completely by the car tarpaulin, and can automatically contract to facilitate loading and unloading of goods by personnel.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a perspective view of the present invention;

fig. 3 is a rear view of the utility model carriage;

FIG. 4 is a cross-sectional view of the present invention along section line A-A;

FIG. 5 is an enlarged view of the utility model at B;

fig. 6 is an enlarged view of the utility model at C;

the reference numbers in the figures are: 1-a compartment; 101-connecting surface; 2-fixing the rod; 3, a traction rod; 301-a traction wheel; 4-moving the rod; 401-a roller; 5-a chute; 501-upper supporting plate; 502-lower support plate; 503-upper limit bar; 504-lower limit bar; 6-driving a motor; 7-a reducer; 701-a first output shaft; 702-a second output shaft; 8-a first diverting fixed sheave; 9-a second diverting fixed pulley; 10-a first fixed pulley; 11-a second fixed pulley; 12-a first traction cable; 13-a second traction cable; 14-upper plate; 15-lower plate; 16-a support bar; 17-vertical rolls; 18-an outer panel; 19-hanging hooks; 20-connecting buckles; 21-radial arm; 22-a connecting plate; 23-a spring; 24-fixing blocks; 25-a bearing; 26-a first connection space; 27-a second connection space; 28-closing plate.

Detailed Description

The present invention will be further described with reference to the following examples.

An automatic hood device comprises a carriage 1 with an opening at the top, and further comprises a fixed rod 2, a draw bar 3, a movable rod group, a sliding piece and a driving device for driving the draw bar 3 to do reciprocating motion; one end of the carriage 1 close to the vehicle head is a connecting end, and the other end of the carriage 1 far away from the vehicle head is a free end; the fixed rod 2 is fixedly arranged at the connecting end of the carriage 1; the first connecting end of the movable rod group is connected with the fixed rod 2 through a first connecting piece, and the second connecting end of the movable rod group is connected with the traction rod 3 through a second connecting piece; the fixed rod 2 and the traction rod 3 both cross the top of the carriage 1, and the traction rod 3 reciprocates in the length direction of the carriage 1 through a sliding part; the moving rod group is composed of a plurality of moving rods 4 which are longitudinally arranged, and two adjacent moving rods 4 are connected through a third connecting piece; when the movable rod group is unfolded, the traction rod 3 is positioned at the free end of the carriage 1.

The truck comprises a truck head and a carriage 1, wherein one end, close to the truck head, of the carriage 1 is a connecting end, and the other end, far away from the truck head, of the carriage 1 is a free end. The fixed rod 2 is fixedly arranged at the connecting end of the carriage 1, the first connecting end of the movable rod group is connected with the fixed rod 2 through a first connecting piece, and the second connecting end of the movable rod group is connected with the traction rod 3 through a second connecting piece. The movable rod group comprises a plurality of movable rods 4 which are longitudinally arranged, and two adjacent movable rods 4 are connected through a third connecting piece. The car tarpaulin is respectively connected with the fixed rod 2, the moving rod 4 and the traction rod 3 through lock catches. The driving device drives the traction rod 3 to do reciprocating motion, and when the movable rod group is unfolded, the traction rod 3 is positioned at the free end of the carriage 1. The traction rods 3 move from the connecting ends of the carriage 1 to the free ends, and traction force provided by the traction rods 3 is transmitted in sequence through the second connecting piece, the third connecting piece and the first connecting piece to drive the movable rods 4 to move towards the free ends in sequence, so that the movable rod group is unfolded. When the movable rod group is contracted, the traction rod 3 is positioned close to the connecting end of the carriage 1. The traction rod 3 moves from the free end of the carriage 1 to the connecting end, the traction force provided by the traction rod 3 is sequentially transmitted through the second connecting piece, the third connecting piece and the first connecting piece, the traction rod 3 is firstly contacted with the movable rod 4 of the second connecting end and then continuously extruded to the connecting end of the carriage 1, and the traction rod 3 and the movable rods 4 are finally extruded to the connecting end of the carriage 1 to realize contraction.

The first, second and third connectors all have various embodiments: in the first embodiment, each of the first, second and third connecting members includes two connecting plates 22 arranged in a cross, and the two connecting plates 22 are hinged at the cross. Two ends of the first connecting piece are respectively hinged with the fixed rod 2 and the first connecting end of the movable rod group, two ends of the second connecting piece are respectively hinged with the traction rod 3 and the second connecting end of the movable rod group, and two ends of the third connecting piece are respectively hinged with two adjacent movable rods 4. In a second embodiment, the first connecting member, the second connecting member and the third connecting member are spring members. The spring part realizes stretching and tightening by means of the elasticity coefficient of the spring part and the action of external force. Two ends of the first spring are respectively and fixedly connected with the fixed rod 2 and the first connecting end of the movable rod group, two ends of the second spring are respectively and fixedly connected with the traction rod 3 and the second connecting end of the movable rod group, and two ends of the third spring are respectively and fixedly connected with the two adjacent movable rods 4. The two specific embodiments can realize the connection function, the extension and the contraction of the first connecting piece, the second connecting piece and the third connecting piece on the fixed rod 2, the traction rod 3 and the movable rod 4.

The traction rod 3 can be arranged on only one side surface of the carriage 1 in the length direction, one end of the traction rod 3 slides through the sliding part, and the other end of the traction rod is positioned above the opening of the carriage 1. However, the above embodiment has the disadvantage of unbalanced stress on the traction rod 3. In order to solve the above technical problem, it is preferable that the number of the sliding members is two, and both ends of the drawbar 3 and the two sliding members are respectively located on two outer side surfaces in the length direction of the car 1. The two ends of the traction rod 3 are respectively matched with the sliding parts to drive the traction rod 3 to integrally move, and the stress of the traction rod 3 is balanced.

In the specific implementation, the sliding member has various specific embodiments: in a first specific embodiment, the sliding part comprises a sliding block and a sliding rail, the sliding block is fixedly arranged at the end part of the traction rod 3, the sliding rail is transversely arranged on the outer side surface of the carriage 1 in the length direction, and the sliding block is in sliding fit with the sliding rail. In a second embodiment, the sliding member includes a sliding groove and a traction wheel, the traction wheel is fixedly arranged at the end of the traction rod 3, the sliding groove is transversely arranged on the outer side surface of the carriage 1 in the length direction, and the traction wheel is in rolling fit with the sliding groove. Both embodiments described above enable the movement of the drawbar 3.

The first embodiment is disadvantageous in that the friction coefficient between the slide and the slide rail is large, which is detrimental to the movement of the drawbar 3. In order to solve the above technical problem, preferably, the sliding member includes a sliding groove 5 and a traction wheel 301; the sliding chute 5 is transversely and fixedly arranged on the outer side surface of the carriage 1 in the length direction; the traction wheel 301 is arranged at the end part of the traction rod 3; the sliding groove 5 is matched with the traction wheel 301 in a rolling way. The traction wheel 301 rolls in the sliding groove 5, and the friction coefficient is small, so that the traction rod 3 can move conveniently.

In order to realize traction of the traction rods 3 respectively positioned at the end parts of the two outer side surfaces in the length direction of the carriage 1, preferably, the driving device comprises a driving motor 6, a speed reducer 7, a first steering fixed pulley 8, a second steering fixed pulley 9, a first fixed pulley 10, a second fixed pulley 11, a first traction rope 12 and a second traction rope 13; the side surface of the carriage 1 close to the vehicle head is a connecting surface 101, and the driving motor 6 and the speed reducer 7 are both arranged on the connecting surface 101; the speed reducer 7 is connected with a rotating shaft of the driving motor 6, and the speed reducer 7 is provided with a first output shaft 701 and a second output shaft 702 which have opposite rotating directions and the same rotating speed; a first wire roller and a second wire roller are fixedly arranged on the first output shaft 701 and the second output shaft 702 respectively; a plane which is vertical to the connecting surface 101 and passes through the center of the connecting surface 101 is a vertical middle vertical plane, and the first diverting fixed pulley 8 and the second diverting fixed pulley 9 are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane; the first steering fixed pulley 8 and the second steering fixed pulley 9 are respectively and fixedly arranged at the connecting end of the carriage 1; the first fixed pulley 10 and the second fixed pulley 11 are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane and are respectively and fixedly arranged at the free end of the carriage 1; the height of said first diverting fixed pulley 8 to the chute 5 is equal to the height of said first fixed pulley 10 to the chute 5; the first wire roller, the first steering fixed pulley 8 and the first fixed pulley 10 are in transmission connection through a first traction rope 12, and the second wire roller, the second steering fixed pulley 9 and the second fixed pulley 11 are in transmission connection through a second traction rope 13; the first traction cable 12 is fixedly connected with one end of the traction rod 3, and the second traction cable 13 is fixedly connected with the other end of the traction rod 3. The switch of driving motor sets up in the driver's cabin, and the driver opens the switch, and driving motor 6 rotates, and reduction gear 7 is connected with driving motor 6's pivot, and first output shaft 701 and second output shaft 702 rotation direction are opposite, through the deceleration effect of reduction gear 7, and the slew velocity of first output shaft 701 and second output shaft 702 is by the required slew velocity. A first wire roller is fixedly arranged on the first output shaft 701, and the first wire roller, the first steering fixed pulley 8 and the first fixed pulley 10 are in transmission connection through a first traction rope 12; the second output shaft 702 is fixedly provided with a second wire roller, and the second wire roller, the second steering fixed pulley 9 and the second fixed pulley 11 are in transmission connection through a second traction rope 13. The plane vertical to the connecting surface 101 and passing through the center of the connecting surface 101 is a vertical median plane. Because the first fixed diverting pulley 8 and the second fixed diverting pulley 9 are symmetrically arranged by taking a vertical middle vertical plane as a symmetrical plane, the first fixed diverting pulley 10 and the second fixed diverting pulley 11 are symmetrically arranged by taking the vertical middle vertical plane as the symmetrical plane, and the height from the first fixed diverting pulley 8 to the chute 5 is equal to the height from the first fixed diverting pulley 10 to the chute 5. Thus, the first diverting fixed pulley 8, the second diverting fixed pulley 9, the first fixed pulley 10 and the second fixed pulley 11 are all located in the same horizontal plane. The first steering fixed pulley 8 and the second steering fixed pulley 9 are respectively fixedly arranged at the connecting end of the carriage 1, and realize the change of the directions of the first traction cable 12 and the second traction cable 13. The first traction cable 12 and the second traction cable 13 are respectively turned from the connecting surface 101 to the outer side surface in the longitudinal direction of the car 1. The first fixed pulley 10 and the second fixed pulley 11 are respectively fixedly arranged at the free end of the carriage 1, and the first traction cable 12 and the second traction cable 13 are respectively wound on the first fixed pulley 10 and the second fixed pulley 11. The first traction rope 12 is fixedly connected with one end of the traction rod 3, and the second traction rope 13 is fixedly connected with the other end of the traction rod 3. The first thread roller and the second thread roller are driven by the first output shaft 701 and the second output shaft 702 to rotate in opposite directions respectively, the first traction rope 12 and the second traction rope 13 move in opposite directions, and the first traction rope 12 and the second traction rope 13 drive two ends of the traction rod 3 to move in the same direction at the same speed respectively.

The number of the moving rod groups may be two, and the two moving rod groups are respectively parallel to two outer side surfaces in the length direction of the carriage 1. However, the above-mentioned embodiment is not beneficial to the extension and retraction of the moving rod set, and in order to solve the above-mentioned technical problem, the moving rod set spans the top of the carriage 1, two ends of the moving rod 4 are respectively located at two outer side surfaces in the length direction of the carriage 1, two ends of the moving rod 4 are both provided with rollers 401, and the rollers 401 are in rolling fit with the sliding chutes 5. The movable rod group spans the top of the carriage 1 and can support the hood cloth. Rollers 401 are respectively provided at both ends of the moving rod 4 located at both outer side surfaces in the longitudinal direction of the car 1, and the rollers 401 roll in the sliding grooves 5. The roller 401 not only supports the moving rod 4, but also reduces the friction coefficient, which is beneficial to the movement of the moving rod 4.

In order to prevent the traction rod 3 and the travel rod 4 from being displaced during movement. Preferably, the device further comprises two limiting pieces, wherein the two limiting pieces are respectively fixedly arranged on two outer side surfaces in the length direction of the carriage 1, the limiting pieces are arranged in parallel with the sliding chute 5, and the two limiting pieces are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane; the limiting piece comprises an upper plate 14, a lower plate 15, a supporting strip 16 and a plurality of vertical rollers 17; an installation space is formed between the upper plate 14 and the lower plate 15; the supporting strips 16 are fixedly arranged on the outer side surface of the carriage 1 in the length direction along the length direction and are positioned in the installation space; a first limiting groove and a second limiting groove are respectively arranged in the length direction of the upper plate 14 and the lower plate 15, the first limiting groove and the second limiting groove are both positioned in the same vertical plane with the sliding groove 5, and the traction rod 3 and the movable rod 4 respectively penetrate through the first limiting groove and the second limiting groove; the vertical roller 17 is vertically arranged in the installation space and is respectively sleeved with the traction rod 3 and the moving rod 4, and the height of the vertical roller 17 is smaller than that of the installation space; the vertical rollers 17 are in rolling engagement with the support bars 16. The traction rod 3 and the movable rod 4 respectively penetrate through a first limiting groove in the length direction of the upper plate 14 and a second limiting groove in the length direction of the lower plate 15, and the limiting piece is arranged in parallel with the sliding groove 5, so that the movement track of the traction rod 3 and the movable rod 4 in the limiting piece is consistent with the movement track of the traction rod 4 in the sliding groove 5 in the movement process. The vertical rollers 17 are vertically arranged in the installation space and respectively limit the traction rod 3 and the movable rod 4 in the vertical direction, so that the traction rod 3 and the movable rod 4 are prevented from deviating in the movement process. The vertical roller 17 is respectively sleeved with the traction rod 3 and the movable rod 4, and the vertical roller 17 rolls on the supporting bar 16, so that the friction coefficient is reduced, and the expansion and contraction of the traction rod 3 and the movable rod 4 are facilitated.

When the movable rod group is unfolded, the traction rod 3 is positioned at the free end of the carriage 1, and the first traction cable 12 and the second traction cable 13 are respectively stretched and are subjected to the pulling force from the traction rod 3 to the free end of the carriage 1. When the movable rod group contracts, the contraction rod group formed by the traction rod 3 and the movable rod group moves to the connecting end of the carriage 1, and at the moment, the first traction cable 12 and the second traction cable 13 are respectively stretched and are subjected to the pulling force from the traction rod 3 to the connecting end of the carriage 1. Therefore, the first traction cable 12 and the second traction cable 13 are easily damaged, and in order to solve the technical problem, the first locking device and the second locking device are preferably further included, and are respectively fixedly arranged on two outer side surfaces in the length direction of the carriage 1; the first locking device is close to the connecting end of the carriage 1, and the second locking device is close to the free end of the carriage 1; the two first locking devices and the two second locking devices are respectively and symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane; when the movable rod group is contracted, the movable rod group and the traction rod 3 form a contraction rod group, and the first locking device is positioned on one side of the contraction rod group on the opposite side of the fixed rod 2; when the movable rod group is unfolded, the second locking device is positioned at one side of the second connecting end of the movable rod group, which is close to the traction rod 3. The two first locking devices are symmetrically arranged on the outer side surface close to the connecting end of the carriage 1 by taking a vertical middle vertical plane as a symmetrical plane, when the movable rod group contracts, the movable rod group and the traction rod 3 form a contraction rod group, and the first locking devices are arranged on one side of the contraction rod group on the opposite side of the fixed rod 2. The first locking device limits the position of the contraction rod group, bears the pulling force of the traction rod 3 to the connecting end of the carriage 1, and prevents the first traction cable 12 and the second traction cable 13 from being damaged due to overlarge pulling force. The two second locking devices are symmetrically arranged on the outer side surface close to the free end of the carriage 1 by taking a vertical middle vertical plane as a symmetrical plane, the movable rod group extends, and the second locking devices bear the pulling force of the traction rod 3 towards the free end of the carriage 1, so that the first traction cable 12 and the second traction cable 13 are prevented from being damaged due to overlarge pulling force.

The first and second locking means may have various embodiments: in a first specific embodiment, each of the first locking device and the second locking device includes a hasp and an arc-shaped ring, the hasps are hinged to the side wall of the carriage 1 in the length direction, the arc-shaped ring spans the height direction of the limiting part, one end of the arc-shaped ring is hinged to the side wall of the carriage 1 in the length direction, and the other end of the arc-shaped ring is fastened with the hasps. In a second embodiment, each of the first locking device and the second locking device includes a hook, a connecting buckle and a swing arm, the hook is fixedly disposed on an outer side surface of the carriage 1 in the length direction, an outer side plate is connected between the upper plate 14 and the lower plate 15 of the limiting member, and a fixing block is fixedly disposed on the outer side plate. The spiral arm is hinged with the fixed block and is rotationally connected with the connecting buckle, and the connecting buckle is hooked with the hook. The two specific embodiments can realize the locking function of the first locking device and the second locking device.

In the first embodiment, the arc-shaped ring has the disadvantages of limited stress strength and easy deformation under the action of external force, and for the above technical problem, it is preferable that each of the first locking device and the second locking device comprises a hook 19, a connecting buckle 20 and a radial arm 21; an outer side plate 18 is fixedly arranged between the upper plate 14 and the lower plate 15 in the length direction, and a fixing block 24 is arranged on the outer side plate 18; the rotary arm 21 is hinged with the fixed block 24 and is rotatably connected with the connecting buckle 20; the hook 19 is fixedly arranged on the outer side surface of the carriage 1 in the length direction and hooked with the connecting buckle 20. The radial arm 21 is tightly hung with the hook 19 through the connecting buckle 20. When the movable rod group is unfolded, the traction rod 3 applies force to the fixed block 24 in the second locking device in the direction of the connecting end of the carriage 1; when the contraction rod set contracts, the contraction rod set applies force to the fixed block 24 in the first locking device in the direction of the free end of the carriage 1. Therefore, the connecting buckle 20 is not directly stressed and is not easy to deform.

As a preferred embodiment of the chute 5, the chute 5 includes an upper support plate 501, a lower support plate 502 and rolling members, and the upper support plate 501 and the lower support plate 502 are respectively and fixedly disposed on the outer side surfaces of the carriage 1 in the length direction and are respectively perpendicular to the outer side surfaces of the carriage 1 in the length direction; a motion space is formed between the upper support plate 501 and the lower support plate 502; the rolling piece is arranged in the motion space and is parallel to the outer side surface of the carriage 1 in the length direction; the rolling members divide the movement space into a first connecting space 26 and a second connecting space 27, the first connecting space 26 is connected with the outer side surface of the carriage 1 in the length direction, and the traction wheel 301 and the roller 401 are both arranged in the first connecting space 26; the rolling member comprises an upper limit strip 503 and a lower limit strip 504; the upper limiting strip 503 is fixedly arranged on the lower surface of the upper support plate 501, the lower limiting strip 504 is fixedly arranged on the upper surface of the lower support plate 502, a sliding space is arranged between the upper limiting strip 503 and the lower limiting strip 504, and the sliding space connects the first connecting space 26 and the second connecting space 27; the end part of the traction rod 3 close to the traction wheel 301 and the end part of the movable rod 4 close to the roller 401 are both provided with bearings 25, and the bearings 25 are in rolling fit with the sliding space; a slideway communicated with the second connecting space 27 is arranged in the length direction of the upper supporting plate 501, and the traction rod 3 and the movable rod 4 respectively penetrate through the slideway and extend into the second connecting space 27. The bearing 25 rolls in the sliding space, so that the movement strength of the traction rod 3 and the moving rod 4 is enhanced, and the rolling reliability of the traction wheel 301 and the roller 401 is enhanced. The traction rod 3 and the moving rod 4 slide in the slideway and the first connecting space. In practical implementation, the sealing plate 28 may further include a sealing plate, the sealing plate 28 is vertically disposed in the second connecting space 27, and the sealing plate 28 is fixedly connected to the ends of the upper support plate 501 and the lower support plate 502, respectively.

In order to solve the technical problem, the truck preferably further comprises a spring 23, wherein one end of the spring 23 is connected with a fixed block 24, and the other end of the spring 23 is connected with the back surface of the radial arm 21 opposite to the hook 19. The elastic deformation of the spring 23 can tighten the radial arm 21 and the fixing block 24, so that the connecting buckle is stably hooked on the hook 19 and is not easy to fall off.

The utility model discloses a concrete implementation mode can be seen from the implementation, the utility model provides a hide complete automatic hood device. The automatic covering device is simple in structure and convenient to operate, can automatically cover the carriage completely by the car tarpaulin, and can automatically contract to facilitate loading and unloading of goods by personnel.

Claims

1. An automatic hood device comprising an open-topped wagon body (1), characterized in that: the device also comprises a fixed rod (2), a traction rod (3), a movable rod group, a sliding piece and a driving device for driving the traction rod (3) to do reciprocating motion;

one end of the carriage (1) close to the vehicle head is a connecting end, and the other end of the carriage far away from the vehicle head is a free end; the fixed rod (2) is fixedly arranged at the connecting end of the carriage (1); the first connecting end of the movable rod group is connected with the fixed rod (2) through a first connecting piece, and the second connecting end of the movable rod group is connected with the traction rod (3) through a second connecting piece;

the fixed rod (2) and the traction rod (3) both cross the top of the carriage (1), and the traction rod (3) reciprocates in the length direction of the carriage (1) through a sliding part;

the moving rod group is composed of a plurality of moving rods (4) which are longitudinally arranged, and two adjacent moving rods (4) are connected through a third connecting piece; when the movable rod group is unfolded, the traction rod (3) is positioned at the free end of the carriage (1).

2. An automatic hood device as set forth in claim 1, characterized in that: the two sliding parts are arranged, and the two ends of the traction rod (3) and the two sliding parts are respectively positioned on two outer side surfaces of the carriage (1) in the length direction.

3. An automatic hood device as set forth in claim 2, characterized in that: the sliding part comprises a sliding groove (5) and a traction wheel (301); the sliding chute (5) is transversely and fixedly arranged on the outer side surface of the carriage (1) in the length direction; the traction wheel (301) is arranged at the end part of the traction rod (3); the sliding groove (5) is matched with the traction wheel (301) in a rolling manner.

4. An automatic hood device as set forth in claim 3, characterized in that: the driving device comprises a driving motor (6), a speed reducer (7), a first steering fixed pulley (8), a second steering fixed pulley (9), a first fixed pulley (10), a second fixed pulley (11), a first traction cable (12) and a second traction cable (13);

the side surface, close to the vehicle head, of the carriage (1) is a connecting surface (101), and the driving motor (6) and the speed reducer (7) are both arranged on the connecting surface (101);

the speed reducer (7) is connected with a rotating shaft of the driving motor (6), and the speed reducer (7) is provided with a first output shaft (701) and a second output shaft (702) which have opposite rotating directions and the same rotating speed; a first wire roller and a second wire roller are fixedly arranged on the first output shaft (701) and the second output shaft (702) respectively;

a plane which is vertical to the connecting surface (101) and passes through the center of the connecting surface (101) is a vertical middle vertical plane, and the first fixed diverting pulley (8) and the second fixed diverting pulley (9) are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane; the first steering fixed pulley (8) and the second steering fixed pulley (9) are respectively and fixedly arranged at the connecting end of the carriage (1);

the first fixed pulley (10) and the second fixed pulley (11) are symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane and are respectively and fixedly arranged at the free end of the carriage (1);

the height of the first fixed diverting pulley (8) to the chute (5) is equal to the height of the first fixed diverting pulley (10) to the chute (5);

the first wire roller, the first steering fixed pulley (8) and the first fixed pulley (10) are in transmission connection through a first traction rope (12), and the second wire roller, the second steering fixed pulley (9) and the second fixed pulley (11) are in transmission connection through a second traction rope (13);

the first traction cable (12) is fixedly connected with one end of the traction rod (3), and the second traction cable (13) is fixedly connected with the other end of the traction rod (3).

5. An automatic hood device as set forth in claim 3, characterized in that: the utility model discloses a carriage, including carriage (1), removal pole group span carriage (1) top, the both ends of removal pole (4) are located two lateral surfaces of carriage (1) length direction respectively, the both ends of removal pole (4) all are provided with gyro wheel (401), gyro wheel (401) and spout (5) roll cooperation.

6. An automatic hood device as set forth in claim 4, characterized in that: the two limiting pieces are respectively and fixedly arranged on two outer side surfaces in the length direction of the carriage (1), the limiting pieces are arranged in parallel with the sliding groove (5), and the two limiting pieces are symmetrically arranged by taking the vertical median plane as a symmetrical plane;

the limiting piece comprises an upper plate (14), a lower plate (15), a supporting strip (16) and a plurality of vertical rollers (17); an installation space is formed between the upper plate (14) and the lower plate (15); the supporting strips (16) are fixedly arranged on the outer side surface of the carriage (1) in the length direction along the length direction and are positioned in the installation space;

a first limiting groove and a second limiting groove are respectively arranged in the length direction of the upper plate (14) and the lower plate (15), the first limiting groove and the second limiting groove are both positioned in the same vertical plane with the sliding groove (5), and the traction rod (3) and the moving rod (4) respectively penetrate through the first limiting groove and the second limiting groove;

the vertical roller (17) is vertically arranged in the installation space and is respectively sleeved with the traction rod (3) and the moving rod (4), and the height of the vertical roller (17) is smaller than that of the installation space; the vertical roller (17) is matched with the supporting strip (16) in a rolling way.

7. An automatic hood device as set forth in claim 6, characterized in that: the two first locking devices and the two second locking devices are respectively and fixedly arranged on two outer side surfaces of the carriage (1) in the length direction;

the first locking device is close to the connecting end of the carriage (1), and the second locking device is close to the free end of the carriage (1); the two first locking devices and the two second locking devices are respectively and symmetrically arranged by taking the vertical middle vertical plane as a symmetrical plane;

when the movable rod group is contracted, the movable rod group and the traction rod (3) form a contraction rod group, and the first locking device is positioned on one side of the contraction rod group on the opposite side of the fixed rod (2); when the movable rod group is unfolded, the second locking device is positioned at one side of the second connecting end of the movable rod group, which is close to the traction rod (3).

8. An automatic hood device as set forth in claim 7, characterized in that: the first locking device and the second locking device respectively comprise a hook (19), a connecting buckle (20) and a rotating arm (21);

an outer side plate (18) is fixedly arranged between the upper plate (14) and the lower plate (15) in the length direction, and a fixing block (24) is arranged on the outer side plate (18); the rotary arm (21) is hinged with the fixed block (24) and is rotatably connected with the connecting buckle (20); the hook (19) is fixedly arranged on the outer side surface of the carriage (1) in the length direction and hooked with the connecting buckle (20).

9. An automatic hood device as set forth in claim 5, characterized in that: the sliding chute (5) comprises an upper supporting plate (501), a lower supporting plate (502) and rolling parts, wherein the upper supporting plate (501) and the lower supporting plate (502) are respectively and fixedly arranged on the outer side surface of the carriage (1) in the length direction along the length direction and are respectively vertical to the outer side surface of the carriage (1) in the length direction;

a motion space is arranged between the upper support plate (501) and the lower support plate (502); the rolling piece is arranged in the motion space and is parallel to the outer side surface of the carriage (1) in the length direction; the rolling members divide the movement space into a first connecting space (26) and a second connecting space (27), the first connecting space (26) is connected with the outer side face of the carriage (1) in the length direction, and the traction wheel (301) and the roller (401) are arranged in the first connecting space (26);

the rolling piece comprises an upper limiting strip (503) and a lower limiting strip (504); the upper limiting strip (503) is fixedly arranged on the lower surface of the upper supporting plate (501), the lower limiting strip (504) is fixedly arranged on the upper surface of the lower supporting plate (502), a sliding space is formed between the upper limiting strip (503) and the lower limiting strip (504), and the sliding space is used for communicating the first connecting space (26) with the second connecting space (27);

bearings (25) are arranged at the end part of the traction rod (3) close to the traction wheel (301) and the end part of the movable rod (4) close to the roller (401), and the bearings (25) are in rolling fit with the sliding space;

the length direction of the upper supporting plate (501) is provided with a slideway communicated with the second connecting space (27), and the traction rod (3) and the movable rod (4) respectively penetrate through the slideway and extend into the second connecting space (27).

10. An automatic hood device as set forth in claim 8, characterized in that: the novel hook is characterized by further comprising a spring (23), one end of the spring (23) is connected with the fixed block (24), and the other end of the spring (23) is connected with the back face of the rotating arm (21) opposite to the hook (19).