A control method for the cover-pushing force of a retractable roof of an open-top vehicle and a cover-pushing device

Abstract

The present invention discloses a method for controlling the lid-pushing force of a telescopic roof of an open wagon and a lid-pushing device, which includes: columns, lifting seats, rotating seats, fork assemblies and tension adjusting assemblies. The columns are vertically installed on both sides of the railway tracks, the rotating seats are installed at the tops of the columns, the lifting seats are installed on the rotating seats, the fork assemblies are hinged to the lifting seats, and the lifting seats drive the fork assemblies to vertically lift on the columns to block the telescopic roof push columns so as to open or close the telescopic roof. By setting a locking component on the fork rod of the lid-pushing device, the fork rod is locked by the locking component. When the lid-pushing force of the fork rod exceeds the set value, the locking component is unlocked, so that the fork rod can deflect and thus disengage from the telescopic roof push column, avoiding damage to the fork rod or the telescopic roof push column. At the same time, a tension adjusting assembly is provided to control the lid-pushing force of the lid-pushing device.

Description

Technical Field

[0001] The present invention relates to the technical field of railway bulk goods, and particularly relates to a method for controlling the cover-pushing force of a telescopic roof of an open wagon and a cover-pushing device. Background Art

[0002] The open wagons of freight trains are mainly used for transporting bulk goods such as coal, ore, and mine construction materials. In order to prevent the coal and other goods in the carriage from spilling along the line during the transportation of the freight open wagon, a canvas or other awning is usually covered on the top of the carriage. Generally, it is completed manually, but the labor intensity of workers is high and the work efficiency is low. Therefore, a telescopic roof that can be automatically opened is started to be used. The telescopic roof is divided into two parts and is arranged at the front and rear ends of the top of the carriage. When in use, the telescopic roof moves slowly on the railway track along with the open wagon. The cover-pushing device is used to block the movement of the telescopic roof along with the open wagon, so that the front and rear telescopic roofs move towards each other from the front and rear ends of the carriage towards the middle of the carriage respectively, so as to cover the telescopic roof; or the front and rear telescopic roofs are pulled apart from the middle of the carriage towards the two ends of the carriage respectively, so as to open the telescopic roof. However, if the cover-pushing force of the cover-pushing device blocking the telescopic roof is too small, it is difficult to push the telescopic roof; when the cover-pushing force of the cover-pushing device blocking the telescopic roof is too large, it will hinder the movement of the open wagon, or damage the cover-pushing device and the telescopic roof. Therefore, it is necessary to adjust and control the cover-pushing force of the cover-pushing device to achieve normal opening and closing of the telescopic roof without hindering the movement of the open wagon, and without damaging the cover-pushing device and the telescopic roof.

[0003] After patent retrieval, the main patents related to this application are as follows:

[0004] 1. A utility model patent with the application number of "201721071050.4", the application date of "2017.08.25", the publication number of "CN207225367U", the publication date of "2018.04.13", the name of "A folding movable roof for a railway freight open wagon", and the applicant of "Zhuzhou Huasheng Industrial Co., Ltd.". This utility model patent discloses a folding movable roof for a railway freight open wagon, including a track arranged on the top of the open wagon carriage, a folding cover plate arranged on the track, and a driving mechanism arranged on the open wagon carriage: the driving mechanism includes a belt transmission mechanism and a pneumatic motor for driving the belt transmission mechanism to rotate. One end of the folding cover plate is fixedly connected to the open wagon carriage, and the other end of the folding cover plate is connected to the transmission belt of the belt transmission mechanism. Driven by the transmission belt, the other end of the folding cover plate can move back and forth along the track, so that the folding cover plate is opened to block the opening at the top of the open wagon carriage or the folding cover plate is folded together to expose the opening at the top of the open wagon carriage. However, the technical solution of this patent is different from that of this application. An air motor 5 for driving the folding movable roof to open and close needs to be arranged on each freight open wagon, and the equipment cost is high.

[0005] 2. A Chinese invention patent with an application number of "201710892741.9", an application date of "2017.09.27", a publication number of "CN107628047A", a publication date of "2018.01.26", a name of "Zeng Shenghua", and an applicant of "Zhuzhou Huasheng Industrial Co., Ltd.", which discloses a method and mechanism for opening and closing a folding movable roof of a railway freight gondola car. The opening and closing method is to set the folding movable roof into a two - half structure including a folding movable roof one and a folding movable roof two; a belt drive mechanism is also provided on the gondola car. One end of the folding movable roof one is connected to one side of the drive belt in the belt drive mechanism and is provided with an outer convex part one, and one end of the folding movable roof two is connected to the other side of the drive belt in the belt drive mechanism and is provided with an outer convex part two. The moving direction of one side of the drive belt is opposite to the moving direction of the other side of the drive belt. A stop device one and a stop device two are provided on the ground; when the gondola car moves, the folding movable roof one and the folding movable roof two are opened or closed by the contact between the stop device one and the outer convex part one or the contact between the stop device two and the outer convex part two. Although this patent discloses the stop device for opening and closing the folding movable roof, it does not disclose the structure of the stop device, nor does it involve the technical problems of tension adjustment and control of the cover - pushing force.

[0006] 3. A utility model patent with an application number of "202122713732.3", an application date of "2021.11.08", a publication number of "CN216443600U", a publication date of "2022.05.06", a name of "A retracting and extending device for a push - type covering curtain of an open - top carriage of a freight train", and an applicant of "Zhuzhou Huasheng Industrial Co., Ltd.", which discloses a retracting and extending device for a push - type covering curtain of an open - top carriage of a freight train, including left and right slide rails symmetrically arranged at the top edges of the side walls on both sides of the open - top carriage for the two sides of the front curtain and the two sides of the rear curtain to slide, and also including two groups of front and rear winding slide rails symmetrically arranged on the outer sides of the front end wall and the rear end wall of the open - top carriage. Each group of winding slide rails consists of a left winding slide rail and a right winding slide rail that are symmetrically arranged left and right; the upper ends of the left winding slide rail and the right winding slide rail are respectively arc - connected to the left slide rail and the right slide rail, and the lower ends are respectively curled in a spiral shape towards the carriage. Although this patent discloses the cover - pushing device for opening and closing the folding movable roof, it does not disclose the structure of the cover - pushing device, nor does it involve the technical problems of tension adjustment and control of the cover - pushing force. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method for controlling the cover - pushing force of a telescopic roof of an open - top vehicle and a cover - pushing device in view of the defects existing in the prior art.

[0008] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A method for controlling the cover-pushing force of a telescopic roof cover-pushing device for an open-top vehicle. By setting a locking component on the fork rod, the fork rod is locked by the locking component; when pushing the cover, the fork rod contacts the telescopic roof push column, blocking the telescopic roof push column from moving with the open-top vehicle to open or close the telescopic roof; when the cover-pushing force of the fork rod exceeds the set value, the locking component is unlocked, enabling the fork rod to deflect and thus disengage from the telescopic roof push column, preventing damage to the fork rod or the telescopic roof push column.

[0009] Further, when the fork rod blocks the telescopic roof push column, the fork rod will deflect. The deflection angle of the fork rod is proportional to the force exerted by the telescopic roof push column on the fork rod; when the deflection angle of the fork rod exceeds the set angle, the locking component loosens, and the fork rod separates from the telescopic roof push column. This can not only open and close the telescopic roof normally but also not hinder the movement of the open-top vehicle and not damage the cover-pushing device and the telescopic roof.

[0010] Further, a tension adjustment component connected to the fork rod is provided. The tension adjustment component is used to adjust the pulling force acting on the fork rod to control the deflection angle of the fork rod and thus control the cover-pushing force of the cover-pushing device.

[0011] A cover-pushing device for implementing the above method for adjusting the cover-pushing force of a telescopic roof of an open-top vehicle includes: a column, a lifting seat, and a fork assembly. The column is vertically installed on both sides of the railway track, the lifting seat is installed at the top of the column, and the fork assembly is hinged to the lifting seat. The lifting seat drives the fork assembly to vertically lift on the column to block the telescopic roof push column to open or close the telescopic roof. The fork assembly includes: a fork body, a fork pin, a fork rod, a locking component, a fork rod rotating shaft, a fork rod return spring, a fork rod return screw, and a fork rod return nut. The fork body is hinged to the lifting seat by the fork pin, the middle of the fork rod is hinged to the fork body by the fork rod rotating shaft, a fork rod roller is provided at the lower end of the fork rod, a locking component for locking the fork rod is provided at the upper end of the fork rod, one end of the fork rod return spring is connected to the lower section of the fork rod, and the other end is connected to the fork rod return screw. The fork rod return screw is installed on the fork body by the fork rod return nut. When the cover-pushing force of the fork rod exceeds the set value, the locking component is unlocked, enabling the fork rod to deflect and thus disengage from the telescopic roof push column, preventing damage to the fork rod or the telescopic roof push column.

[0012] Further, the locking fastener includes a fork lock head, a fork lock hook and a lock hook torsion spring. The fork lock head is arranged at the upper end of the fork rod. The middle part of the fork lock hook is hinged to the fork body. One end of the fork lock hook is hinged with a hook tip, and the other end is provided with an unlocking inclined plane. The lock hook torsion spring is installed between the fork lock hook and the fork body, so that the hook tip hooks the fork lock head. An unlocking roller is arranged on the lifting seat. When the deflection angle of the fork rod exceeds the set angle, the unlocking inclined plane will collide with the unlocking roller, and the unlocking roller presses the unlocking inclined plane, so that the two opposed hook tips that hook the fork lock head open, the locking fastener is loosened, and the fork rod can deflect unrestrictedly, so that the fork rod is separated from the telescopic roof lifting column. This avoids the fork rod from hindering the movement of the open car and prevents the cover opening device and the telescopic roof from being damaged.

[0013] Further, there is a hook tip eccentricity between the contact point of the hook tip and the fork lock head and the hook tip hinge axis, and the hook tip tension will generate a hook tip deflection moment. The hook tip deflection moment is proportional to the hook tip tension. When the hook tip tension exceeds the predetermined tension, the hook tip deflection moment overcomes the friction force between the hook tip and the fork lock head, so that the hook tip is separated from the fork lock head, and the fork rod can deflect unrestrictedly, so that the fork rod is separated from the telescopic roof lifting column. This avoids the fork rod from hindering the movement of the open car and prevents the cover opening device and the telescopic roof from being damaged.

[0014] Further, it further includes a tension adjustment component, which is connected to the fork component to adjust the tension of the fork component blocking the telescopic roof lifting column. It can open and close the telescopic roof normally, and will not hinder the movement of the open car and prevent the cover opening device and the telescopic roof from being damaged.

[0015] Further, the tension adjustment component includes a tension adjustment motor, a tension adjustment reducer, a tension adjustment screw, a tension adjustment spring seat, a tension adjustment sleeve, a tension adjustment spring, a tension adjustment counterweight, a steel wire rope, a pulley and a guide post. One end of the steel wire rope is connected to the fork component through the pulley, and the other end of the steel wire rope is connected to the tension adjustment counterweight. One end of the tension adjustment spring is connected to the tension adjustment counterweight, and the other end of the tension adjustment spring is connected to the tension adjustment spring seat. The tension adjustment motor drives the tension adjustment screw to rotate through the tension adjustment reducer, so that the tension adjustment spring seat moves up and down along the guide post to adjust the elastic force of the tension adjustment spring. To adjust the tension acting on the fork component and control the cover opening force of the fork rod.

[0016] Further, when the fork assembly does not block the telescopic roof push post, the fork assembly is in the initial position. At this time, the elastic forces of the tension adjustment counterweight and the tension adjustment spring are supported by the top end of the tension adjustment sleeve. When the fork assembly blocks the telescopic roof push post, the telescopic roof push post causes the fork assembly to generate a deflection angle of the fork rod, causing the fork assembly to deviate from the initial position by a certain distance. The tension adjustment counterweight is lifted by the steel wire rope and the tension adjustment spring is stretched. The tension generated by the tension adjustment counterweight and the tension adjustment spring acts on the fork assembly. When the locking part is loosened and the fork rod is separated from the telescopic roof push post, the fork rod and the fork assembly return to this position. At this time, the tension adjustment counterweight falls to the top end of the tension adjustment sleeve. The elastic forces of the tension adjustment counterweight and the tension adjustment spring are supported by the top end of the tension adjustment sleeve to reduce the collision force between the fork assembly and the lifting seat during resetting and reduce the noise generated by the collision.

[0017] Further, a rotating seat is provided between the column and the lifting seat. The lifting seat is arranged on the rotating seat. The rotating seat includes: a rotating motor, a rotating driving gear and a disk gear. The rotating motor drives the rotating driving gear to rotate around the disk gear. When the cover needs to be pushed, the rotating seat rotates the lifting seat and the fork assembly to the working position. After the cover pushing work is completed, the rotating seat rotates the lifting seat away from the working position to prevent the lifting seat and the fork assembly from affecting vehicle passage.

[0018] The beneficial effects of the present invention are as follows: By setting a locking part on the fork rod of the cover pushing device, the fork rod is locked by the locking part. When the cover pushing force of the fork rod exceeds the set value, the locking part is unlocked, enabling the fork rod to deflect and thus disengage from the telescopic roof push post, avoiding damage to the fork rod or the telescopic roof push post. At the same time, a tension adjustment component is provided to control the cover pushing force of the cover pushing device. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram when the cover pushing device pushes the telescopic roof of the open-top vehicle.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the cover pushing device.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the cover pushing device with the column hidden.

[0022] Figure 4 It is a front view schematic diagram of the cover pushing device with the column hidden.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the lifting seat and the fork.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the fork.

[0025] Figure 7 It is a front view schematic diagram of the fork.

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the rear fork after the fork body is hidden.

[0027] Figure 9 To hide the fork body, the top view of the rear fork is shown.

[0028] Figure 10 for Figure 9 A is a partial enlarged schematic diagram.

[0029] Figure 11 It is a top view of the locking part.

[0030] Figure 12 This is a schematic diagram of the shift fork moving the retractable roof.

[0031] Figure 13 This is a schematic diagram of the shift fork when the lock is released.

[0032] Figure 14 This is a schematic diagram of the three-dimensional structure of the tension adjustment component.

[0033] Figure 15 This is a cross-sectional diagram of the tension adjustment component.

[0034] Figure 16 This is a cross-sectional diagram of the tension adjustment assembly when the fork moves the retractable roof.

[0035] In the figure: 100 - cover device, 110 - column, 120 - rotating seat, 121 - rotating motor, 122 - rotating driving gear, 123 - disc gear, 130 - lifting seat, 131 - unlocking roller, 140 - shift fork assembly, 141 - shift fork body, 142 - shift fork pin, 143 - shift fork rod, 1431 - shift fork rod roller, 144 - lock member, 1441 - shift fork lock head, 1442 - shift fork lock hook, 14421 - hook tip, 14422 - unlocking inclined surface, 1443 - lock hook torsion spring, 145 - shift fork rod rotating shaft, 146 - shift fork rod return spring, 147 - shift fork rod return screw, 148 - Fork lever reset nut, 150—tension adjustment assembly, 151—tension adjustment motor, 152—tension adjustment reducer, 153—tension adjustment screw, 154—tension adjustment spring seat, 155—tension adjustment sleeve, 156—tension adjustment spring, 157—tension adjustment counterweight, 158—wire rope, 159—pulley, 160—guide column, H1—height from counterweight to sleeve top, H2—distance of fork assembly from initial position, α—fork lever deflection angle, P—hook tip eccentricity, T—hook tip tension, f—hook tip friction, V—open car movement direction, M—hook tip deflection torque, N—fork lever deflection direction when unlocked;

[0036] 200—Open car, 201—Retractable roof shift column. Detailed implementation mode

[0037] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings:

[0038] As shown in Figure 1 the figure: In order to prevent coal and other goods in the carriage from spilling along the line during the transportation of the freight open car, a retractable roof that can be automatically opened is used on the freight open car. The retractable roof consists of two pieces and is arranged at the front and rear ends of the carriage top. The front and rear retractable roofs are connected by chains or steel wires. When in use, the retractable roof moves slowly on the rails along with the open car. The fork assembly of the cover shifting device is used to block one end of the retractable roof, so that one end of the retractable roof cannot move along with the open car, but slides on the slide rail on the top of the open car to open the retractable roof. And the other end of the retractable roof is driven by a chain or a steel wire rope to close towards the middle of the carriage, so as to cover the retractable roof; or the front and rear retractable roofs are respectively pulled away from the middle of the carriage towards the two ends of the carriage, so as to open the retractable roof. If the cover shifting force of the cover shifting device for blocking the retractable roof is too small, it is difficult to shift the retractable roof; when the cover shifting force of the cover shifting device for blocking the retractable roof is too large, it will hinder the movement of the open car, or damage the cover shifting device and the retractable roof.

[0039] The cover shifting device of the present invention is as shown in Figure 2 the figure, and includes: a column 110, a rotating seat 120, a lifting seat 130, a fork assembly 140 and a tension adjusting assembly 150. The column 110 is vertically installed on both sides of the rail. A rotating seat 120 is provided at the top of the column 110. The rotating seat 120 includes: a rotating motor 121, a rotating driving gear 122 and a disk gear 123. The rotating motor 121 drives the rotating driving gear 122 to rotate around the disk gear 123. The lifting seat 130 is installed on the rotating seat 120. The fork assembly 140 is hinged on the lifting seat 130. The lifting seat 130 drives the fork assembly 140 to vertically lift at the top of the column 110 to block the retractable roof push column 201 to open or close the retractable roof. Usually, two cover shifting devices are arranged side by side, one of which is working and the other is standby to increase the reliability of the cover shifting device.

[0040] As shown in Figures 3 to 4As shown in FIGS. 14 to 16, a tension adjustment assembly 150 is further provided in the column 110, including a tension adjustment motor 151, a tension adjustment speed reducer 152, a tension adjustment screw 153, a tension adjustment spring seat 154, a tension adjustment sleeve 155, a tension adjustment spring 156, a tension adjustment counterweight 157, a wire rope 158, a pulley 159 and a guide post 160; one end of the wire rope 158 is connected to the fork assembly 140 through the pulley 159, the other end of the wire rope 158 is connected to the tension adjustment counterweight 157, one end of the tension adjustment spring 156 is connected to the tension adjustment counterweight 157, the other end of the tension adjustment spring 156 is connected to the tension adjustment spring seat 154, and the tension adjustment motor 51 drives the tension adjustment screw 153 to rotate through the tension adjustment speed reducer 152, so that the tension adjustment spring seat 154 moves up and down along the guide post 160 to adjust the elastic force of the tension adjustment spring 156. To adjust the tension acting on the fork assembly 140 and control the pushing force of the fork rod 143.

[0041] As Figures 5 to 7 shown, the fork assembly 140 includes: a fork body 141, a fork pin 142, a fork rod 143, a locking member 144, a fork rod rotating shaft 145, a fork rod return spring 146, a fork rod return screw 147 and a fork rod return nut 148. The fork body 141 is hinged to the lifting seat 130 by the fork pin 142. The fork assembly 140 is connected to the tension adjustment spring 156 and the tension adjustment counterweight 157 through the wire rope 158, and a pulling force for blocking the telescopic awning push post 201 is formed on the fork assembly 140.

[0042] As Figures 8 to 10 shown, the middle part of the fork rod 143 is hinged to the fork body 141 by the fork rod rotating shaft 145. A fork rod roller 1431 is provided at the lower end of the fork rod 143, and a locking member 144 for locking the fork rod 143 is provided at the upper end of the fork rod 143. One end of the fork rod return spring 146 is connected to the lower section of the fork rod 143, and the other end is connected to the fork rod return screw 147. The fork rod return screw 147 is installed on the fork body 141 by using the fork rod return nut 148.

[0043] As Figures 10 to 11As shown in the figure, the locking fastener 144 includes a fork lock head 1441, a fork lock hook 1442 and a lock hook torsion spring 1443. The fork lock head 1441 is arranged at the upper end of the fork rod 143. The middle part of the fork lock hook 1442 is hinged on the fork body 141. One end of the fork lock hook 1442 is hinged with a hook tip 14421, and the other end is provided with an unlocking inclined surface 14422. The lock hook torsion spring 1443 is installed between the fork lock hook 1442 and the fork body 141, so that the hook tip 14421 hooks the fork lock head 1441. An unlocking roller 131 is arranged on the lifting seat 130. When the deflection angle α of the fork rod exceeds the set angle, the unlocking inclined surface 14422 will collide with the unlocking roller 131, and the unlocking roller 131 presses the unlocking inclined surface 14422, so that the two opposed hook tips 14421 that hook the fork lock head 1441 open, the locking fastener 144 is loosened, and the fork rod 143 can deflect without limitation, so that the fork rod 143 is separated from the telescopic roof push post 201. This can prevent the fork rod 143 from hindering the movement of the open car and prevent damage to the cover opening device and the telescopic roof.

[0044] At the same time, there is a hook tip eccentricity P between the contact point of the hook tip 14421 and the fork lock head 1441 and the hinge axis of the hook tip 14421. The hook tip tension T will generate a hook tip deflection moment M. The hook tip deflection moment M is proportional to the hook tip tension T. When the hook tip tension T exceeds the predetermined tension, the hook tip deflection moment M overcomes the friction between the hook tip 14421 and the fork lock head 1441, so that the hook tip 14421 is separated from the fork lock head 1441, and the fork rod 143 can deflect without limitation, so that the fork rod 143 is separated from the telescopic roof push post 201. This can prevent the fork rod 143 from hindering the movement of the open car and prevent damage to the cover opening device and the telescopic roof.

[0045] As Figure 12 shown in the figure, when the telescopic roof push post 201 moves along the moving direction V of the open car, the fork rod 143 after descending together with the lifting seat 130 will block the telescopic roof push post 201 from moving with the open car 200, so that the telescopic roof slides on the slide rail on the top of the open car to open or close the telescopic roof. Since the telescopic roof push post 201 abuts against the lower end of the fork rod 143, it will cause the whole deflection of the fork assembly 140 around the fork pin 142. This will cause a distance H2 of the fork assembly deviating from the initial position at the connection between the fork assembly 140 and the steel wire rope 158. And through the steel wire rope 158, the tension adjusting counterweight 157 forms a counterweight to the height H1 of the top of the sleeve. The deflection angle α of the fork assembly 140 and the fork rod is proportional to the difference between the thrust acting on the fork rod 143 by the telescopic roof push post 201 and the tension acting on the fork rod 143 by the tension adjusting assembly 150. By adjusting the tension adjusting counterweight 157 and the elastic force of the tension adjusting spring 156, the tension acting on the fork rod 143 by the tension adjusting assembly 150 can be adjusted.

[0046] As Figure 13As shown, after the retractable roof is fully opened or closed, the retractable roof dial post 201 can no longer slide on the top of the open car. If the fork lever 143 continues to block the retractable roof dial post 201, it will hinder the movement of the open car or damage the cover device and the retractable roof. At this time, the retractable roof dial post 201 will push the lower end of the fork lever 143 along the moving direction V of the open car, causing the entire fork assembly 140 to continue to deflect. When the fork assembly 140 exceeds a predetermined deflection angle, the unlocking inclined surface 14422 on the fork lock hook 1442 will collide with the unlocking roller 131. The unlocking roller 131 will squeeze the unlocking inclined surface 14422, causing the two opposing hook tips 14421 that hook the fork lock head 1441 to open, and the locking part 144 to loosen. The fork lever 143 can deflect unrestrictedly around the fork lever rotation shaft 145 along the deflection direction N of the fork lever during unlocking. The fork lever 143 is separated from the retractable roof dial post 201, and the fork lever 143 will no longer block the retractable roof dial post 201. Thus, it is possible to prevent the fork lever 143 from hindering the movement of the open car or prevent damage to the cover device and the retractable roof. Then, under the action of the fork lever return spring 146, the fork lever 143 rotates in the reverse direction around the fork lever rotation shaft 145. The fork lock head 1441 is inserted into the fork lock hook 1442 to lock the fork lever 143, facilitating the next cover operation.

[0047] As Figures 14 to 16 shown, when the fork assembly 140 does not block the retractable roof dial post 201, the fork assembly 140 is in the initial position. At this time, the elastic forces of the tension adjustment counterweight 157 and the tension adjustment spring 156 are supported by the top end of the tension adjustment sleeve 155. When the fork assembly 140 blocks the retractable roof dial post 201, the retractable roof dial post 201 causes the fork assembly 140 to generate a fork lever deflection angle α, causing the fork assembly to deviate from the initial position by a distance H2. The tension adjustment counterweight 157 is pulled up by a height H1 through the steel wire rope 158, and at the same time, the tension adjustment spring 156 is stretched. The tensions generated by the tension adjustment counterweight 157 and the tension adjustment spring 156 act on the fork assembly 140. When the locking part 144 is loosened and the fork lever 143 is separated from the retractable roof dial post 201, the fork lever 143 and the fork assembly 140 return to the initial position. At this time, the tension adjustment counterweight 157 drops to the top end of the tension adjustment sleeve 155. The elastic forces of the tension adjustment counterweight 157 and the tension adjustment spring 156 are supported by the top end of the tension adjustment sleeve 155 to reduce the collision force between the fork assembly 140 and the lifting seat 130 during the reset of the fork assembly 140 and reduce the noise generated by the collision.

[0048] In summary, the beneficial effects of the present invention are as follows: By providing a locking member on the fork rod of the cover dialing device, the fork rod is locked by the locking member. When the cover dialing force of the fork rod exceeds the set value, the locking member is unlocked, enabling the fork rod to deflect and thus disengage from the telescopic roof dialing post, avoiding damage to the fork rod or the telescopic roof dialing post. At the same time, a tension adjustment assembly is provided to control the cover dialing force of the cover dialing device.

[0049] The above embodiments are only for illustrating the present invention and are not intended to limit the present invention. Those skilled in the relevant technical fields can still make various changes or transformations without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by each claim.

Claims

1. A telescopic roof cover device for an open-top vehicle, comprising: A column (110), a lifting seat (130) and a fork assembly (140). The column (110) is vertically installed on both sides of the railway track. The lifting seat (130) is installed at the top of the column (110). The fork assembly (140) is hinged to the lifting seat (130). The lifting seat (130) drives the fork assembly (140) to vertically lift on the column (110) to block the telescopic awning push post (201) to open or close the telescopic awning. It is characterized in that a rotating seat (120) is arranged between the column (110) and the lifting seat (130), and the lifting seat (130) is arranged on the rotating seat (120). The fork assembly (140) includes: a fork body (141), a fork pin (142), a fork rod (143), a locking member (144), a fork rod rotating shaft (145), a fork rod return spring (146), a fork rod return screw (147) and a fork rod return nut (148). The fork body (141) is hinged to the lifting seat (130) by the fork pin (142). The middle part of the fork rod (143) is hinged to the fork body (141) by the fork rod rotating shaft (145). A fork rod roller (1431) is arranged at the lower end of the fork rod (143). A locking member (144) for locking the fork rod (143) is arranged at the upper end of the fork rod (143). One end of the fork rod return spring (146) is connected to the lower section of the fork rod (143), and the other end is connected to the fork rod return screw (147). The fork rod return screw (147) is installed on the fork body (141) by the fork rod return nut (148). When the pushing force of the fork rod (143) exceeds the set value, the locking member (144) is unlocked, so that the fork rod (143) can deflect, so as to disengage from the telescopic awning push post (201), and avoid damage to the fork rod (143) or the telescopic awning push post (201).

2. The open car telescopic roof flap device according to claim 1, characterized in that: The locking member (144) includes: a fork lock head (1441), a fork lock hook (1442) and a lock hook torsion spring (1443). The fork lock head (1441) is arranged at the upper end of the fork rod (143). The middle part of the fork lock hook (1442) is hinged to the fork body (141). One end of the fork lock hook (1442) is hinged with a hook tip (14421), and the other end is provided with an unlocking inclined surface (14422). The lock hook torsion spring (1443) is installed between the fork lock hook (1442) and the fork body (141) so that the hook tip (14421) hooks the fork lock head (1441). An unlocking roller (131) is arranged on the lifting seat (130). When the deflection angle (α) of the fork rod exceeds the set angle, the unlocking inclined surface (14422) will collide with the unlocking roller (131), and the unlocking roller (131) presses the unlocking inclined surface (14422), so that the two opposed hook tips (14421) that hook the fork lock head (1441) open, the locking member (144) is loosened, and the fork rod (143) can deflect unrestrictedly, so that the fork rod (143) is separated from the telescopic awning push post (201).

3. The open-top vehicle telescopic roof flap device according to claim 2, characterized in that: There is a hook tip eccentricity (P) between the contact point of the hook tip (14421) and the fork lock head (1441) and the hinge axis of the hook tip (14421). The hook tip tension (T) will generate a hook tip deflection moment (M).

4. The open car telescopic roof flap device according to claim 3, characterized in that: It further includes a tension adjustment component (150). The tension adjustment component (150) is connected to the fork component (140) and is used to adjust the tension of the fork component (140) blocking the telescopic ceiling push column (201).

5. The open car telescopic roof flap device according to claim 4, characterized in that: The tension adjustment component (150) includes: a tension adjustment motor (151), a tension adjustment speed reducer (152), a tension adjustment screw (153), a tension adjustment spring seat (154), a tension adjustment sleeve (155), a tension adjustment spring (156), a tension adjustment counterweight (157), a steel wire rope (158), a pulley (159) and a guide post (160); one end of the steel wire rope (158) is connected to the fork component (140) through the pulley (159), the other end of the steel wire rope (158) is connected to the tension adjustment counterweight (157), one end of the tension adjustment spring (156) is connected to the tension adjustment counterweight (157), the other end of the tension adjustment spring (156) is connected to the tension adjustment spring seat (154), and the tension adjustment motor (51) drives the tension adjustment screw (153) to rotate through the tension adjustment speed reducer (152), so that the tension adjustment spring seat (154) moves up and down along the guide post (160) to adjust the elastic force of the tension adjustment spring (156).

6. The open car telescopic roof cover flipping device according to claim 5, characterized in that: When the fork component (140) does not block the telescopic ceiling push column (201), the fork component (140) is in the initial position. At this time, the elastic forces of the tension adjustment counterweight (157) and the tension adjustment spring (156) are supported by the top end of the tension adjustment sleeve (155); when the fork component (140) blocks the telescopic ceiling push column (201), the telescopic ceiling push column (201) causes the fork component (140) to generate a fork rod deflection angle (α), so that the fork component deviates from the initial position by a distance (H2). The tension adjustment counterweight (157) is pulled up and the tension adjustment spring (156) is stretched through the steel wire rope (158), and the tensions generated by the tension adjustment counterweight (157) and the tension adjustment spring (156) act on the fork component (140).

7. The open car telescopic roof flap device according to claim 6, characterized in that: The rotating seat (120) includes: a rotating motor (121), a rotating driving gear (122) and a disk gear (123). The rotating motor (121) drives the rotating driving gear (122) to rotate around the disk gear (123).

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