A vehicle-mounted integrated device for maintaining concrete bridge piers

Abstract

The present invention belongs to the technical field of bridge pier maintenance, and specifically discloses a vehicle-mounted integrated device for concrete bridge pier maintenance, including: a column rail frame, a traveling column rail, a pier cover winding mechanism, and a telescopic boom assembly. The column rail frames are relatively provided with two, and the tops of the two column rail frames are detachably provided with a water spray pipe rack; the traveling column rails are relatively provided with two, and the two traveling column rails are detachably provided at the bottom ends of the two column rail frames respectively; the pier cover winding mechanism is provided on the traveling column rail; the column rail frame is detachably provided on one side of the telescopic boom assembly, and the bottom of the telescopic boom assembly is provided with a bottom connector. The vehicle-mounted integrated device for concrete bridge pier maintenance provided by the present invention can realize the spraying of the bridge pier and the pier cover wrapping work at the same time, thereby improving the maintenance efficiency of the bridge pier, and further improving the efficiency of engineering construction.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge pier maintenance, and in particular relates to a vehicle-mounted integrated device for maintaining a concrete bridge pier. Background Art

[0002] With the continuous development of railway and highway construction, bridges are an important part of the project, and their pier maintenance technology is particularly important. After the pier is cast, in order to ensure that all parts of the pier maintain good connection and integrity, avoid cracks and damage, enhance the firmness of the structure, and make the concrete strength reach the design value as soon as possible, it is necessary to maintain the bridge pier.

[0003] At present, the bridge piers are mainly maintained by spraying or wrapping the pier casing. When the spraying method is used, the water spray device is installed on the top of the bridge pier, and the water spray device is moved by traction to perform the spraying work. The traditional pier casing wrapping maintenance method requires workers to be hoisted to the top of the pier and cooperate with the use of a crane to assist in wrapping the pier casing to complete the maintenance of the bridge pier.

[0004] However, the existing technology still has the following problems: the spraying work and the pier cover wrapping work are carried out separately, which leads to a decrease in the efficiency of the pier body maintenance work and affects the engineering efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems existing in the current bridge pier body maintenance that the spraying work and the pier casing wrapping work are carried out separately, resulting in reduced maintenance efficiency of the pier body and affecting the engineering efficiency. A vehicle-mounted integrated maintenance device for concrete bridge pier body is provided to realize the spraying and pier casing wrapping work on the bridge pier body at the same time, thereby improving the maintenance efficiency of the bridge pier body and further improving the engineering construction efficiency.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A vehicle-mounted integrated device for maintaining a concrete bridge pier, comprising:

[0008] A column rail frame, wherein two column rail frames are arranged opposite to each other, and the top ends of the two column rail frames are detachably provided with a water spraying pipe frame, and the water spraying pipe frame is used for connecting an external water spraying device, and the water spraying pipe frame is also used for spraying water on the bridge pier;

[0009] Travel rails, wherein two travel rails are arranged opposite to each other, and the two travel rails are detachably arranged at the bottom ends of two rail frames of the two rails, and two travel tracks are formed between the outside of the travel rails and the bottom of the rail frames of the two rails;

[0010] A pier clothing winding mechanism, the pier clothing winding mechanism is arranged on the traveling rail, the pier clothing winding mechanism comprises a motor, a driving bevel gear arranged at the output end of the motor, a driven bevel gear meshing with the driving bevel gear, a connecting rod 1 and a connecting rod 2, one end of the connecting rod 1 is connected to the driving bevel gear, the other end of the connecting rod 1 is provided with a walking roller assembly that can travel along two walking tracks, one end of the connecting rod 2 is connected to the driven bevel gear, and the other end of the connecting rod 2 is provided with a pier clothing roll;

[0011] The telescopic boom assembly, the surrounding column rail frame is detachably arranged on the telescopic boom assembly, and a bottom connecting seat is arranged at the bottom of the telescopic boom assembly.

[0012] Furthermore, the walking roller assembly includes a wheel frame, a driving roller and a driven roller arranged inside the wheel frame, one end of the connecting rod is connected to the driving bevel gear, and the other end of the connecting rod passes through the wheel frame and is connected to the driving roller;

[0013] The driving roller and the driven roller are respectively arranged on the two running tracks and are respectively adapted to the two running tracks;

[0014] An extension plate 1 is provided on the outside of the second connecting rod, one end of the first extension plate is connected to the wheel carrier, and the other end of the first extension plate is provided with an extension plate 2;

[0015] A bracket is provided at the bottom of the motor, and the bracket is detachably arranged on the second extension plate.

[0016] Further, a pulley assembly is provided on the second connecting rod, and the pulley assembly includes a driving pulley, a driven pulley, a third connecting rod provided on the driven pulley, and a belt wound around the driving pulley and the driven pulley, and the driving pulley is provided on the second connecting rod;

[0017] One end of the connecting rod 3 is connected to the driven pulley, and the other end of the connecting rod 3 is provided with a wire coil;

[0018] The third connecting rod is rotatably provided with a side-connected carrier outside, and the driven pulley is rotatably provided on the side-connected carrier.

[0019] Further, the telescopic boom assembly includes a telescopic boom, a fixed connecting column arranged at the top of the telescopic boom, and a connecting arm frame arranged outside the fixed connecting column, and the connecting arm frame is detachably arranged on the surrounding column rail frame;

[0020] The bottom end of the telescopic arm is fixedly mounted on the bottom connection seat.

[0021] Furthermore, the vehicle-mounted integrated maintenance device for concrete bridge piers also includes a continuous tilting structure, which is arranged on the side of the telescopic boom assembly, and includes a first gear, a second gear, a first rack, a second rack, a connecting frame, a pullback spring and a hydraulic rod, the outer side of the first gear is meshed with the first rack, the outer side of the second gear is meshed with the second rack, and the two ends of the connecting frame are respectively connected to the first rack and the second rack;

[0022] One end of the pull-back spring is connected to the second rack, and the other end of the pull-back spring is fixed with a spring fixed frame;

[0023] A connecting column is provided on the first gear, and one end of the connecting column away from the first gear is connected to the bottom seat;

[0024] A short-circuit column is provided on the second gear, and one end of the short-circuit column away from the second gear is connected to the base of the hydraulic rod;

[0025] The output end of the hydraulic rod is provided with a terminal seat, and the terminal seat is rotatably arranged on the telescopic boom assembly;

[0026] A first stand and a second stand are slidably provided on the top of the first rack and the top of the second rack respectively.

[0027] The vehicle-mounted integrated maintenance device for concrete bridge piers provided by the present invention is provided with a continuous tilting structure, which has at least the following technical effects: the continuous tilting structure is used for unfolding and storing the telescopic boom assembly, and the operation is flexible and reliable, and suitable for practical use.

[0028] Furthermore, the vehicle-mounted integrated device for maintaining concrete bridge piers further comprises a wall-attaching component, wherein the wall-attaching component is arranged on the pier casing winding mechanism;

[0029] The wall-attaching component comprises a connecting carrier, a through hole is opened at the lower end of the side of the connecting carrier, an electric telescopic rod is arranged in the through hole, a force spring is sleeved on the outside of the electric telescopic rod, one end of the force spring is connected to the connecting carrier, and the other end of the force spring is provided with a pressure roller connecting frame;

[0030] A pier cover pressing roller is rotatably arranged on one side of the pressing roller connecting frame away from the force spring, and auxiliary rollers are fixedly arranged at both ends of the pier cover pressing roller, and the diameter of the auxiliary rollers is larger than the diameter of the pier cover pressing roller.

[0031] The vehicle-mounted integrated device for maintaining concrete bridge piers provided by the present invention is provided with a wall-adhering component, which has at least the following technical effects: the wall-adhering component is used to compress the pier cover and the iron wire during the winding process of the pier cover, so that the pier cover and the iron wire fit the outer wall of the concrete pier column; at the same time, a cutting machine is also provided for automatically cutting the pier cover after the winding of the pier cover is completed, with a high degree of automation, thereby facilitating the maintenance work of the bridge pier.

[0032] Furthermore, a screw rod is provided on the inner side of the pressure roller frame, the screw rod passes through the pressure roller frame and is rotatably arranged at the bottom end of the pressure roller frame, the outer side of the screw rod is threadedly connected to a lifting frame, a cutting machine is fixedly provided on one side of the lifting frame, and the lifting frame is slidably arranged on the inner side of the pressure roller frame.

[0033] Furthermore, a motor is provided on the pressure roller frame, and the motor is used to drive the screw to rotate.

[0034] Furthermore, the vehicle-mounted integrated device for maintaining concrete bridge piers further comprises a lifting wheel group, wherein a plurality of lifting wheel groups are provided, and the plurality of lifting wheel groups are spaced apart and distributed along the inner surface of the surrounding column rail frame;

[0035] The lifting wheel assembly comprises two symmetrically arranged wheel frames and an auxiliary spring arranged between the two wheel frames, and a lifting roller is rotatably arranged on the inner side of the bottom end of the wheel frame;

[0036] Fixed support plates are rotatably provided on both sides of the wheel frame, and the fixed support plates are arranged on the inner side of the surrounding column rail frame;

[0037] A connecting seat is rotatably provided on the two wheel frames, and two ends of the auxiliary spring are respectively connected to the two connecting seats.

[0038] According to the vehicle-mounted integrated maintenance device for concrete bridge piers provided by the present invention, a plurality of lifting wheel groups are provided, which have at least the following technical effects: the plurality of lifting wheel groups are used to enable the column rail frame to be lowered while the lifting wheel group on the inner side can contact the outer wall of the concrete pier when the vehicle-mounted integrated maintenance device for concrete bridge piers is used to maintain the bridge pier, so that the column rail frame does not contact the outer wall of the concrete pier when in use, thereby allowing the column rail frame to be stably raised and lowered.

[0039] Furthermore, the vehicle-mounted integrated device for maintaining concrete bridge piers further comprises a carrier vehicle, wherein the telescopic boom assembly is arranged in a compartment of the carrier vehicle;

[0040] A reserve water tank and a cushion block are also provided in the carriage of the carrier.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention provides a water spraying pipe rack and a pier cover winding mechanism. The water spraying pipe rack is connected to an external water spraying device so as to spray water on the bridge pier for maintenance. During the water spraying maintenance, the pier cover outside the pier cover roll can be wound around the outside of the bridge pier through the pier cover winding mechanism, thereby reducing labor and improving the maintenance efficiency of the bridge pier.

[0043] 2. The present invention has a telescopic boom that can drive the column rail frame to rise and fall, thereby reducing the risk of workers climbing high. The continuous tilting structure can store the column rail frame on the top of the carrier, which is convenient for transportation by the carrier, so that it can be moved to other locations for maintenance, thereby achieving the goal of quick maintenance.

[0044] 3. The vehicle-mounted integrated maintenance device for concrete bridge piers provided by the present invention has synergistic effects among its components to improve the maintenance efficiency of concrete piers; in addition, the components have a compact structure, occupy a small space, and are easy to transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0046] Figure 1 It is a schematic diagram of the construction structure of the vehicle-mounted concrete bridge pier body maintenance integrated device provided by the present invention;

[0047] Figure 2 It is a structural schematic diagram of the vehicle-mounted concrete bridge pier body maintenance integrated device provided by the present invention;

[0048] Figure 3 It is a schematic diagram of the disassembled structure of the pier cover winding mechanism and the side-connected carrier provided by the present invention;

[0049] Figure 4 It is a schematic diagram of the combined structure of the wheel carrier and the wall-attaching assembly provided by the present invention;

[0050] Figure 5 It is a schematic diagram of the combined structure of the telescopic boom and the continuous tilting structure provided by the present invention;

[0051] Figure 6 It is a schematic diagram of the combined structure of the enclosure column rail frame, the traveling enclosure rail and the lifting wheel group provided by the present invention;

[0052] Figure 7 The present invention provides Figure 6 A magnified view of the structure in Figure 2.

[0053] The reference numerals are: 1, column rail frame; 101, water spray pipe frame; 2, travel rail; 3, pier clothing winding mechanism; 301, motor; 3011, bracket; 302, driving bevel gear; 303, driving roller; 304, driven bevel gear; 305, wheel carrier; 306, driven pulley; 307, wire roll; 308, side carrier; 309, pier clothing roll; 4, wall-attached component; 401, connecting carrier Frame; 402, electric telescopic rod; 403, force spring; 404, roller frame; 405, connecting frame arm; 406, motor; 407, screw rod; 408, lifting frame; 409, cutting machine; 410, pier cloth pressing roller; 411, auxiliary roller; 5, telescopic arm; 501, fixed connecting column; 5011, connecting arm frame; 502, bottom seat; 503, vertical plate; 6, continuous tilting structure; 601, first gear; 602, first rack; 6021, first stand; 603, connecting stand; 604, second rack; 6041, second stand; 605, second gear; 606, pull-back spring; 607, spring fixed stand; 608, hydraulic rod; 609, terminal seat; 610, fixed seat; 7, lifting wheel group; 701, wheel frame; 702, lifting roller; 703, connecting seat; 704, auxiliary spring; 7 05. Fixed support plate; 8. Carrier; 801. Reserve water tank; 802. Pad; 9. Concrete pier; 100. Travel roller assembly; 500. Telescopic boom assembly; 10. Travel track; 20. Connecting rod one; 30. Driven roller; 40. Connecting rod two; 50. Pulley assembly; 60. Extension plate one; 70. Extension plate two; 80. Connecting rod three; 6011. Connecting column; 6051. Short-circuit column. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] like Figures 1 to 7 As shown, a vehicle-mounted integrated device for maintaining a concrete bridge pier comprises:

[0057] A column rail frame 1, two column rail frames 1 are arranged opposite to each other, and the top ends of the two column rail frames 1 are detachably provided with a water spraying pipe frame 101, and the water spraying pipe frame 101 can be externally connected to a water spraying device, and water is supplied to the water spraying pipe frame 101 through the water spraying device, so that the water spraying pipe frame 101 can be used for water spraying maintenance of the concrete pier 9 (i.e., the bridge pier);

[0058] Travel rails 2, two travel rails 2 are arranged opposite to each other, and the two travel rails 2 are detachably arranged at the bottom ends of the two pillar rail frames 1, and two walking tracks 10 are formed between the outside of the travel rails 2 and the bottom of the pillar rail frames 1;

[0059] The pier clothing winding mechanism 3 is arranged on the outer side of the traveling rail 2, and the pier clothing winding mechanism 3 includes a motor 301, a driving bevel gear 302, a driven bevel gear 304, a connecting rod 1 20 and a connecting rod 2 40; specifically, the driving bevel gear 302 is fixedly installed at the output end of the motor 301, and the driving bevel gear 302 is meshed with the driven bevel gear 304;

[0060] One end of the connecting rod 20 is connected to the active bevel gear 302, and the other end of the connecting rod 20 is provided with a walking roller assembly 100 that can walk along two walking tracks 10;

[0061] One end of the connecting rod 40 is connected to the driven bevel gear 304, and the other end of the connecting rod 40 is provided with a clothes roll 309;

[0062] The telescopic boom assembly 500, the surrounding column rail frame 1 is detachably arranged on one side of the telescopic boom assembly 500, and a bottom connection seat 502 is arranged at the bottom of the telescopic boom assembly 500;

[0063] A continuous tilting structure 6, which is arranged on the side of the telescopic boom 5;

[0064] The carrier vehicle 8, the telescopic boom 5 and the continuous tilting structure 6 are all arranged in the compartment of the carrier vehicle 8;

[0065] In actual use, the carrier 8 is used to transport the column rail frame 1, the traveling rail 2, the pier clothing winding mechanism 3, the telescopic arm assembly 500, the continuous tilting structure 6, etc. to the bridge pier body (i.e., the concrete pier column 9), and the column rail frame 1 and the traveling rail 2 are mounted on the outside of the bridge pier body. The water spraying pipe frame 101 on the column rail frame 1 is externally connected to a water spraying device for water spraying maintenance of the bridge pier body. The traveling roller assembly 100 travels in the traveling track 10, driving the pier clothing on the pier clothing roll 309 to cover the outside of the bridge pier body, completing the pier clothing winding work on the bridge pier body. The telescopic arm assembly 500 can be used to lift the column rail frame 1, the traveling rail 2, and the pier clothing winding mechanism 3, thereby completing the comprehensive water spraying maintenance and pier clothing winding work on the bridge pier body; and it can also realize the simultaneous water spraying maintenance and pier clothing wrapping of the bridge pier body.

[0066] like Figure 1 As shown, in some embodiments of the present invention, the two enclosure column rail frames 1 are connected in a detachable manner, and the detachable connection method includes but is not limited to a bolt connection method. Specifically, both ends of the two enclosure column rail frames 1 are fixedly provided with connecting ears, and two adjacent connecting ears in the two enclosure column rail frames 1 are connected by bolts, so that the two enclosure column rail frames 1 are connected to form a whole, and the overall structure formed by the connection of the two enclosure column rail frames 1 can be adaptably covered on the outside of the bridge pier.

[0067] like Figure 1 As shown, in some embodiments of the present invention, the vertical cross-section of the traveling rail 2 can be an inverted "T" shape, and two walking tracks 10 are formed between the outside of the inverted "T"-shaped traveling rail 2 and the bottom of the column rail frame 1.

[0068] like Figures 1 to 3 As shown, in some embodiments of the present invention, two continuous tilting structures 6 can be provided, and the two continuous tilting structures 6 are respectively provided at the front and rear sides of the telescopic boom 5 . The two continuous tilting structures 6 can improve the stability of the telescopic boom 5 during rotation.

[0069] like Figures 1 to 3 As shown, in some embodiments of the present invention, a water spray pipe rack 101 can be composed of a main pipe and a plurality of branch pipes connected to the main pipe, the plurality of branch pipes are connected to nozzles, and the main pipe is externally connected to a water spray device; when water spraying maintenance is performed on the bridge pier body, the water spraying equipment supplies water to the main pipe, and then sprays it through the nozzles, thereby realizing the water spraying maintenance work on the bridge pier body; specifically, the water spraying direction of the nozzle can be set inward, so as to facilitate water spraying on the concrete pier column 9.

[0070] like Figures 1 to 3 As shown, in some embodiments of the present invention, the walking roller assembly 100 includes a wheel carrier 305, a driving roller 303 and a driven roller 30 arranged inside the wheel carrier 305, one end of the connecting rod 20 is connected to the driving bevel gear 302, and the other end of the connecting rod 20 passes through the wheel carrier 305 and is connected to the driving roller 303;

[0071] The driving roller 303 and the driven roller 30 are respectively arranged on the two running tracks 10 and are respectively adapted to the two running tracks 10. Specifically, the driving roller 303 and the driven roller 30 are respectively arranged in the two running tracks 10 and can respectively run along the two running tracks 10. Since the driving roller 303 and the driven roller 30 are respectively arranged in the two running tracks 10, they are in contact with the rail surfaces of the two running tracks 10, which facilitates the movement of the pier clothing winding mechanism 3.

[0072] Specifically, since one end of the connecting rod 20 passes through the wheel carrier 305 and is connected to the active roller 303, and the other end of the connecting rod 20 is connected to the active bevel gear 302, the active bevel gear 302 can rotate under the drive of the motor 301, thereby driving the rotation of the connecting rod 20, thereby driving the active roller 303 to roll in the walking track 10, that is, the active roller 303 moves along the walking track 10; this arrangement allows the pier cover on the pier cover roll 309 to be coated on the outside of the bridge pier body, which is conducive to the pier cover coating work of the bridge pier body;

[0073] At the same time, since the wheel carrier 305 is provided, the pier clothing winding mechanism 3 can be more stable when moving.

[0074] like Figures 1 to 3 As shown, in some embodiments of the present invention, an extension plate 60 is provided on the outside of the second connecting rod 40. Specifically, the extension plate 60 can be rotatably installed on the outside of the second connecting rod 40, that is, the second connecting rod 40 can rotate in the extension plate 60, one end of the extension plate 60 is connected to the wheel carrier 305, and the other end of the extension plate 60 is provided with an extension plate 70;

[0075] Specifically, the extension plate 1 60 is fixedly arranged on the outside of the wheel carrier 305, that is, the extension plate 1 60 can be fixedly connected to the outside of the wheel carrier 305 by welding, bolting or integral molding;

[0076] Similarly, the other end of the extension plate 1 60 is provided with an extension plate 2 70, that is, the extension plate 2 70 can be fixedly connected to the extension plate 1 60 by welding, bolting or integral molding;

[0077] A bracket 3011 is provided at the bottom of the motor 301, and the bracket 3011 is detachably provided on the extension plate 2 70. Specifically, the mounting seat on the motor 301 is fixedly mounted on the bracket 3011. The fixing connection methods between the mounting seat on the motor 301 and the bracket 3011 are all existing technologies, and the fixing connection methods include but are not limited to welding connection methods, bolt connection methods, etc.;

[0078] Specifically, the bracket 3011 is detachably mounted on the second extension plate 70, and the detachable connection method includes but is not limited to a bolt connection method; that is, the bracket 3011 can be fixed to the second extension plate 70 by a bolt connection method;

[0079] Through the above arrangement, the connection between the wheel carrier 305 and the bracket 3011 is achieved, and the fixed installation of the motor 301 is achieved at the same time, and the structure is compact and reasonable.

[0080] like Figures 1 to 3As shown, in some embodiments of the present invention, a pulley assembly 50 is provided on the second connecting rod 40, and the pulley assembly 50 includes a driving pulley, a driven pulley 306, and a belt wound around the driving pulley and the driven pulley 306. The pulley assembly 50 also includes a connecting rod 3 80 provided on the driven pulley 306, wherein the driving pulley is fixedly provided on the second connecting rod 40; specifically, the driving pulley can be fixedly sleeved on the outside of the second connecting rod 40, so that the rotation of the second connecting rod 40 can drive the rotation of the driving pulley;

[0081] One end of the connecting rod 3 80 is connected to the driven pulley 306, and the other end of the connecting rod 3 80 is fixedly provided with a wire roll 307. In addition, an iron wire is wound around the wire roll 307. More specifically, the bottom of the driven pulley 306 can be fixedly connected to the connecting rod 3 80, and the other end of the connecting rod 3 80 can be fixedly connected to the top of the wire roll 307. The fixed connection method includes but is not limited to a welding connection method, a bolt connection method, etc.

[0082] The connecting rod 3 80 is externally rotatably mounted with a side carrier 308 , and the driven pulley 306 is rotatably mounted on the side carrier 308 ;

[0083] The side carrier 308 is provided to facilitate the rotation of the wire coil 307 and the release of the external wire of the wire coil 307;

[0084] In addition, since the driving pulley is fixed on the connecting rod 40, when the motor 301 drives the driving bevel gear 302 to rotate, the driven bevel gear 304 meshing with the driving bevel gear 302 rotates, driving the rotation of the pier clothing roll 309 and the wire roll 307, thereby realizing the synchronous rotation of the pier clothing roll 309 and the wire roll 307, and then realizing the synchronous release of the pier clothing on the pier clothing roll 309 and the iron wire on the wire roll 307, so that the pier clothing can be more firmly attached to the bridge pier.

[0085] like Figures 1 to 3 As shown, in some embodiments of the present invention, the driving pulley can be located below the extension plate 60 so that the extension plate 60 does not interfere with the normal operation of the pulley assembly 50.

[0086] like Figures 1 to 4 As shown, in some embodiments of the present invention, the vehicle-mounted integrated device for maintaining the concrete bridge pier body further includes a wall-attaching component 4, which is disposed on one side of the pier cover winding mechanism 3;

[0087] The wall-adhering component 4 includes a connecting carrier 401, a through hole is opened at the lower end of the side of the connecting carrier 401, an electric telescopic rod 402 is arranged in the through hole, a force spring 403 is sleeved on the outside of the electric telescopic rod 402, one end of the force spring 403 is fixedly connected to the connecting carrier 401, and the other end of the force spring 403 is fixedly connected to a pressure roller connecting frame 404, and a side of the pressure roller connecting frame 404 away from the force spring 403 is rotatably provided with a pier clothing pressure roller 410, and auxiliary rollers 411 are fixedly arranged at both ends of the pier clothing pressure roller 410, and the diameter of the auxiliary roller 411 is larger than the diameter of the pier clothing pressure roller 410; specifically, the mounting seat of the electric telescopic rod 402 can be fixedly installed in the through hole;

[0088] In addition, a connecting frame arm 405 is rotatably provided on the connecting frame 401, and the connecting frame arm 405 includes a rotatably connected connecting arm and a connecting interface, the other end of the connecting arm is rotatably connected to the connecting frame 401, and the other end of the connecting interface is rotatably connected to the pressure roller connecting frame 404;

[0089] Specifically, the connection carrier 401 is detachably disposed on the second extension plate 70, and more specifically, the connection carrier 401 is detachably disposed between the second extension plate 70 and the bracket 3011, wherein the detachable connection method may be a bolt connection method;

[0090] In addition, one end of the side carrier 308 is rotatably mounted on the outside of the connecting rod 380, and the other end of the side carrier 308 is fixedly mounted on the connecting carrier 401; specifically, Figure 3 A schematic diagram of the disassembled structure of the pier clothing winding mechanism and the side-connected carrier is provided, wherein the top of the left end of the side-connected carrier 308 is fixedly connected to the connecting carrier 401, and the lower rear part of the side-connected carrier 308 is rotatably mounted on the outside of the connecting rod 3 80; more specifically, the installation of the side-connected carrier 308 is based on not interfering with the normal operation of the components in the pier clothing winding mechanism 3;

[0091] Specifically, when the column rail frame 1 drops to the lowest point, the pier cover on the pier cover roll 309 and the iron wire on the wire roll 307 can be pulled out, and the iron wire is located on the outside of the pier cover roll 309, and the pier cover fits the outer wall of the concrete pier column 9. At the same time, the electric telescopic rod 402 is energized to drive the pressure roller frame 404 to move, so that the pier cover pressure roller 410 is located on the outside of the pier cover and the iron wire, and the force spring 403 is in a compressed state, so that the pier cover pressure roller 410 can press the pier cover, so that the pier cover can always fit the outer wall of the concrete pier column 9 to prevent the wind from blowing the pier cover away. After the electric telescopic rod 402 is used, the power supply is cut off, so that the electric telescopic rod 402 can be freely extended and retracted, and then the force spring 403 can provide elastic force for the pressure roller frame 404 and the pier cover pressure roller 410.

[0092] like Figures 1 to 4As shown, in some embodiments of the present invention, a screw rod 407 is further installed on the inner side of the roller frame 404, and the screw rod 407 penetrates the roller frame 404 and is rotatably arranged at the bottom end of the roller frame 404, that is, the two ends of the screw rod 407 are rotatably installed at the upper end and the lower end of the inner side of the roller frame 404, that is, the screw rod 407 can rotate on the inner side of the roller frame 404; specifically, a motor 406 is arranged on the roller frame 404, specifically, the mounting seat of the motor 406 is fixedly installed on the roller frame 404, and the motor 406 is used to drive the screw rod 407 to rotate;

[0093] The outer side of the screw rod 407 is threadedly connected to a lifting carrier 408, and a cutting machine 409 is fixedly provided on one side of the lifting carrier 408. The cutting machine 409 is used to cut the pier cover and the iron wire;

[0094] In addition, the lifting carriage 408 can be slidably disposed on the inner side of the roller frame 404, so that during the rotation of the screw rod 407, the lifting carriage 408 can slide up and down along the inner side of the roller frame 404;

[0095] Specifically, after the pier cover is wound, the cutter 409 is started, and then the motor 406 is started. The motor 406 drives the screw rod 407 to rotate, thereby driving the lifting carrier 408 and the cutter 409 to descend, and the pier cover and the wire are cut. At this time, the electric telescopic rod 402 is energized, so that the pier cover pressing roller 410 can leave the pier cover, so that the surrounding column rail frame 1 can leave the concrete pier column 9, and then the surrounding column rail frame 1 can be recovered to perform maintenance work on the next concrete pier column 9.

[0096] like Figures 1 to 7 As shown, in some embodiments of the present invention, the vehicle-mounted integrated device for maintaining concrete bridge piers further includes a lifting wheel set 7, and the lifting wheel set 7 is provided with a plurality of sets, and the plurality of lifting wheel sets 7 are spaced apart and distributed along the inner surface of the surrounding column rail frame 1;

[0097] The lifting wheel assembly 7 includes two symmetrically arranged wheel frames 701 and an auxiliary spring 704 arranged between the two wheel frames 701, and the auxiliary spring 704 is used to connect the two wheel frames 701;

[0098] A lifting roller 702 is also rotatably provided on the inner side of the bottom end of the wheel frame 701;

[0099] Fixed support plates 705 are rotatably provided on both sides of the wheel frame 701, and the fixed support plates 705 are fixedly installed on the inner side of the surrounding column rail frame 1;

[0100] The two wheel frames 701 are both rotatably provided with connecting seats 703, and the two ends of the auxiliary spring 704 are respectively connected to the two connecting seats 703;

[0101] Specifically, when the enclosure column track frame 1 is descending, the lifting wheel group 7 contacts the outer wall of the concrete pier 9, and the lifting roller 702 in the lifting wheel group 7 fits the outer wall of the concrete pier 9 for easy rolling, so that the enclosure column track frame 1 will not contact the outer wall of the concrete pier 9 when in use, thereby preventing damage to the concrete pier 9, and the auxiliary spring 704 is in an extended state, so that the lifting roller 702 can always contact the outer wall of the concrete pier 9, so that the enclosure column track frame 1 can stably descend and rise.

[0102] like Figures 1 to 5 As shown, in some embodiments of the present invention, the telescopic boom assembly 500 includes a telescopic boom 5, a fixed connecting column 501 disposed at the top of the telescopic boom 5, and a connecting arm frame 5011 disposed outside the fixed connecting column 501, and the connecting arm frame 5011 is detachably disposed on the surrounding column rail frame 1, that is, the surrounding column rail frame 1 is detachably installed on the connecting arm frame 5011, and the detachable connection method can be a bolt connection method; specifically, the telescopic boom 5 is telescopic, and more specifically, the telescopic method of the telescopic boom 5 includes but is not limited to a screw lifting method or a hydraulic lifting method;

[0103] The bottom end of the telescopic arm 5 is fixedly mounted on the bottom connection seat 502;

[0104] Specifically, when the telescopic boom 5 is erected, the telescopic boom 5 is extended, and the extension of the telescopic boom 5 drives the column rail frame 1 to rise until it rises to the upper side of the concrete pier 9, and then the device is moved by the carrier 8. The telescopic boom 5 can drive the column rail frame 1 to move up and down, which is convenient for maintenance work.

[0105] like Figures 1 to 5 As shown, in some embodiments of the present invention, the continuous tilting structure 6 includes a first gear 601, a second gear 605, a first rack 602, a second rack 604, a connecting frame 603, a pull-back spring 606 and a hydraulic rod 608, the outer side of the first gear 601 is meshed with the first rack 602, the outer side of the second gear 605 is meshed with the second rack 604, and both ends of the connecting frame 603 are connected to the first rack 602 and the second rack 604 respectively;

[0106] One end of the return spring 606 is connected to the second rack 604, and the other end of the return spring 606 is fixed with a spring bracket 607;

[0107] A connecting column 6011 is fixedly connected at the central position of the first gear 601, and one end of the connecting column 6011 away from the first gear 601 is connected to the bottom connection seat 502. Specifically, one end of the connecting column 6011 away from the first gear 601 can be fixedly connected to the bottom connection seat 502;

[0108] A short-circuit column 6051 is fixedly connected at the central position of the second gear 605, and one end of the short-circuit column 6051 away from the second gear 605 is connected to the base of the hydraulic rod 608. Specifically, one end of the short-circuit column 6051 away from the second gear 605 can be fixedly connected to the base of the hydraulic rod 608;

[0109] The output end of the hydraulic rod 608 is fixedly provided with a terminal seat 609, and the other end of the terminal seat 609 is rotatably mounted on the telescopic boom 5; specifically, the other end of the terminal seat 609 can be rotatably mounted on the outer shell of the telescopic boom 5;

[0110] The first rack 602 and the second rack 604 are slidably mounted with a first stand 6021 and a second stand 6041 at their top ends respectively; the first stand 6021, the second stand 6041 and the spring stand 607 are detachably mounted on the carrier 8, and the detachable connection method may be a bolt connection method;

[0111] Specifically, the hydraulic rod 608 is extended and drives the telescopic boom 5 to tilt. Since the telescopic boom 5 and the hydraulic rod 608 are placed at an angle, the telescopic boom 5 will slowly stand upright to one side. The change in the state of the telescopic boom 5 will drive the first gear 601 to rotate. The rotation of the first gear 601 drives the first rack 602 to move. The first rack 602 drives the second rack 604 to move together through the connecting frame 603, thereby causing the second gear 605 to rotate together. Furthermore, the second gear 605 can drive the hydraulic rod 608 to rotate through the short-circuit column 6051. In this way, the states of the hydraulic rod 608 and the telescopic boom 5 can be changed at the same time. If the telescopic boom 5 is to be recovered, the hydraulic rod 608 can be shortened.

[0112] The pull-back spring 606 can assist the movement of the second rack 604 , the connecting frame 603 and the first rack 602 through the pulling force, so that the hydraulic rod 608 can move stably.

[0113] like Figures 1 to 5 As shown, in some embodiments of the present invention, both sides of the telescopic boom 5 are rotatably provided with upright plates 503, and the upright plates 503 are fixedly arranged in the compartment of the carrier 8. The upright plates 503 can be fixed in the compartment of the carrier 8 by bolt connection or welding connection;

[0114] In addition, since a connecting column 6011 is fixedly connected at the central position on the first gear 601, the end of the connecting column 6011 away from the first gear 601 is connected to the base seat 502. Specifically, the connecting column 6011 passes through the vertical plate 503 and is connected to the base seat 502; the vertical plate 503 supports the telescopic arm 5 without interfering with the rotation of the telescopic arm 5.

[0115] like Figures 1 to 5As shown, in some embodiments of the present invention, the external rotation of the short-circuit column 6051 is provided with a fixed seat 610, and the fixed seat 610 is fixedly arranged in the compartment of the carrier 8. Specifically, the fixed seat 610 can be fixed in the compartment of the carrier 8 by bolt connection or welding connection. The fixed seat 610 is provided to support the short-circuit column 6051 without interfering with the rotation of the short-circuit column 6051.

[0116] like Figure 1 to Figure 2 As shown, a reserve water tank 801 and a cushion block 802 are also provided in the compartment of the carrier 8. The reserve water tank 801 is used to temporarily supply water to the water spray pipe rack 101 when the external water spray equipment is abnormal; the cushion block 802 is used to support the fixed connecting column 501.

[0117] The present invention provides a vehicle-mounted integrated device for maintaining concrete bridge piers, and its working principle is as follows:

[0118] The vehicle-mounted integrated device for maintaining the concrete bridge pier is transported to the designated concrete pier 9 by a carrier 8. It should be noted that when the device is not in use, the fixed connecting column 501 is located at the top of the pad 802. At this time, the telescopic boom 5 and the hydraulic rod 608 in the connecting and tilting structure 6 are in an inclined state, so that the telescopic boom 5 can stand upright when in use.

[0119] When the concrete pier 9 is maintained, the water pipe rack 101 is connected to an external water supply device, and then the hydraulic rod 608 is started, the hydraulic rod 608 will be extended, and the telescopic boom 5 will be driven to tilt. Since the telescopic boom 5 and the hydraulic rod 608 are placed at an angle, the telescopic boom 5 will slowly stand upright to one side, and the change in the state of the telescopic boom 5 will drive the first gear 601 to rotate, and the rotation of the first gear 601 drives the first rack 602 to move, and the first rack 602 drives the second rack 604 to move together through the connecting frame 603, thereby causing the second gear 605 to rotate together, and then the second gear 605 can drive the hydraulic rod 608 to rotate, so that the states of the hydraulic rod 608 and the telescopic boom 5 can be changed at the same time. If the telescopic boom 5 is recovered, the hydraulic rod 608 will be shortened, and the pull-back spring 606 can assist the second rack 604, the connecting frame 603 and the first rack 602 to move through the pulling force, so that the hydraulic rod 608 can move stably.

[0120] When the telescopic boom 5 is erected, the telescopic boom 5 is extended, and the extension of the telescopic boom 5 drives the column rail frame 1 to rise until it rises to the upper side of the concrete pier 9. At this time, the carrier 8 moves the device so that the column rail frame 1 is located directly above the concrete pier 9. At this time, the telescopic boom 5 is used to make the column rail frame 1 descend, and at the same time, the lifting wheel group 7 contacts the outer wall of the concrete pier 9. The lifting roller 702 in the lifting wheel group 7 fits the outer wall of the concrete pier 9 for easy rolling, so that the column rail frame 1 will not contact the concrete pier 9 when in use. The outer wall of the column 9 is in contact with the outer wall of the concrete pier 9 to prevent damage to the concrete pier 9, and the auxiliary spring 704 is in an extended state, so that the lifting roller 702 can always contact the outer wall of the concrete pier 9, and water is transported to the water spraying pipe rack 101 through the water supply equipment. Since a nozzle is arranged on the outer side of the water spraying pipe rack 101, the water spraying direction of the nozzle is arranged inward, which is convenient for spraying water on the concrete pier 9. At this time, the telescopic arm 5 drives the surrounding column rail frame 1 to descend, and first sprays water on the outer side of the concrete pier 9 for maintenance until the surrounding column rail frame 1 descends to the lowest point;

[0121] At this time, the pier clothing on the pier clothing roll 309 and the iron wire on the wire roll 307 can be pulled out, the iron wire is located on the outside of the pier clothing roll 309, and the pier clothing fits the outer wall of the concrete pier column 9. At the same time, the electric telescopic rod 402 is energized to drive the pressure roller frame 404 to move, so that the pier clothing pressure roller 410 is located on the outside of the pier clothing and the iron wire, and the force spring 403 is in a compressed state, so that the pier clothing pressure roller 410 can press the pier clothing, so that the pier clothing can always fit the outer wall of the concrete pier column 9 to prevent the wind from blowing the pier clothing away. After the electric telescopic rod 402 is used, the power supply is cut off, so that the electric telescopic rod 402 can be freely extended and retracted, and then the force spring 403 can provide elastic force for the pressure roller frame 404 and the pier clothing pressure roller 410;

[0122] Then, the column rail frame 1 is driven to rise by the telescopic boom 5, and the water spray pipe frame 101 continues to spray water. At this time, the motor 301 in the pier clothing winding mechanism 3 is started, and the motor 301 drives the active bevel gear 302, the connecting rod 20 and the active roller 303 to rotate. Since the active roller 303 has a power source, the driven roller 30 is not provided with a power source, so that the active roller 303 can roll on the track surface of the traveling surrounding rail 2, so as to drive the pier clothing winding mechanism 3 and the wall-attaching component 4 to move. When the pier clothing winding mechanism 3 moves, the rotation of the active bevel gear 302 will drive the driven bevel gear 304 to rotate together, and then drive the pier clothing roll 309 to rotate, so that the pier clothing can be released, and the pier clothing winding mechanism 3 moves along the traveling surrounding rail 2, so as to carry out the pier clothing winding work on the concrete pier column 9, thereby carrying out the water spraying and pier clothing winding work at the same time, improving the maintenance efficiency of the concrete pier column 9, and then improving the construction efficiency.

[0123] When the pier cover is wound, the wire roll 307 is driven by the pulley 306 to rotate, so that the wire can be automatically released. The winding of the wire is used to bind the pier cover to prevent it from falling off.

[0124] It should be noted that after the winding is completed, the cutting machine 409 is started, and then the motor 406 is started to rotate the screw rod 407, thereby driving the lifting carrier 408 and the cutting machine 409 to descend, and the pier cover and the wire are cut. In addition, the electric telescopic rod 402 is energized so that the pier cover pressing roller 410 can leave the pier cover, so that the surrounding column rail frame 1 can leave the concrete pier column 9, and then the surrounding column rail frame 1 can be recovered to perform maintenance work on the next concrete pier column 9.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0126] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A vehicle-mounted integrated device for maintaining concrete bridge piers, characterized in that: include: A perimeter column rail frame (1), wherein two perimeter column rail frames (1) are arranged opposite to each other, and the top ends of the two perimeter column rail frames (1) are detachably provided with a water spraying pipe frame (101), the water spraying pipe frame (101) being used for connecting an external water spraying device, and the water spraying pipe frame (101) is also used for spraying water on a bridge pier; Travel rails (2), two of the travel rails (2) being arranged opposite to each other, the two travel rails (2) being detachably arranged at the bottom ends of the two pillar rail frames (1), and two travel tracks (10) being formed between the outside of the travel rails (2) and the bottom of the pillar rail frames (1); A pier clothing winding mechanism (3), the pier clothing winding mechanism (3) being arranged on a traveling rail (2), the pier clothing winding mechanism (3) comprising a motor (301), a driving bevel gear (302) arranged at an output end of the motor (301), a driven bevel gear (304) meshing with the driving bevel gear (302), a connecting rod 1 (20) and a connecting rod 2 (40), one end of the connecting rod 1 (20) being connected to the driving bevel gear (302), the other end of the connecting rod 1 (20) being provided with a walking roller assembly (100) capable of walking along two traveling rails (10), one end of the connecting rod 2 (40) being connected to the driven bevel gear (304), the other end of the connecting rod 2 (40) being provided with a pier clothing roll (309); A telescopic boom assembly (500), wherein the surrounding column rail frame (1) is detachably mounted on the telescopic boom assembly (500), and a bottom connection seat (502) is provided at the bottom of the telescopic boom assembly (500); The second connecting rod (40) is provided with a pulley assembly (50), the pulley assembly (50) comprising a driving pulley, a driven pulley (306), a third connecting rod (80) provided on the driven pulley (306), and a belt wound around the outside of the driving pulley and the driven pulley (306), the driving pulley being provided on the second connecting rod (40); One end of the connecting rod three (80) is connected to the driven pulley (306), and the other end of the connecting rod three (80) is provided with a wire coil (307); The third connecting rod (80) is rotatably provided with a side carrier (308) outside, and the driven pulley (306) is rotatably provided on the side carrier (308).

2. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1 is characterized in that: The walking roller assembly (100) comprises a wheel carrier (305), a driving roller (303) and a driven roller (30) arranged inside the wheel carrier (305); one end of the connecting rod (20) is connected to the driving bevel gear (302); the other end of the connecting rod (20) passes through the wheel carrier (305) and is connected to the driving roller (303); The driving roller (303) and the driven roller (30) are respectively arranged on the two running tracks (10) and are respectively adapted to the two running tracks (10); An extension plate 1 (60) is provided on the outside of the second connecting rod (40), one end of the extension plate 1 (60) is connected to the wheel carrier (305), and the other end of the extension plate 1 (60) is provided with an extension plate 2 (70); A bracket (3011) is provided at the bottom of the motor (301), and the bracket (3011) is detachably arranged on the second extension plate (70).

3. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1 is characterized in that: The telescopic boom assembly (500) comprises a telescopic boom (5), a fixed connecting column (501) arranged at the top of the telescopic boom (5), and a connecting arm frame (5011) arranged outside the fixed connecting column (501), wherein the connecting arm frame (5011) is detachably arranged on the surrounding column rail frame (1); The bottom end of the telescopic arm (5) is fixedly mounted on a bottom connection seat (502).

4. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1 is characterized in that: It also includes a continuous tilting structure (6), which is arranged on the side of the telescopic boom assembly (500), and includes a first gear (601), a second gear (605), a first rack (602), a second rack (604), a connecting frame (603), a pull-back spring (606) and a hydraulic rod (608), the outer side of the first gear (601) is meshed with the first rack (602), the outer side of the second gear (605) is meshed with the second rack (604), and the two ends of the connecting frame (603) are respectively connected to the first rack (602) and the second rack (604); One end of the return spring (606) is connected to the second rack (604), and the other end of the return spring (606) is fixedly provided with a spring fixed frame (607); A connecting column (6011) is provided on the first gear (601), and one end of the connecting column (6011) away from the first gear (601) is connected to the bottom connection seat (502); The second gear (605) is provided with a short-circuit column (6051), and one end of the short-circuit column (6051) away from the second gear (605) is connected to the base of the hydraulic rod (608); The output end of the hydraulic rod (608) is provided with a terminal seat (609), and the terminal seat (609) is rotatably mounted on the telescopic boom assembly (500); A first stand (6021) and a second stand (6041) are slidably disposed on the top end of the first rack (602) and the top end of the second rack (604), respectively.

5. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1 is characterized in that: It also includes a wall-adhering component (4), wherein the wall-adhering component (4) is arranged on the pier cover winding mechanism (3); The wall-attaching component (4) comprises a connecting carrier (401), a through hole is provided at the lower end of the side of the connecting carrier (401), an electric telescopic rod (402) is provided in the through hole, a force spring (403) is sleeved on the outside of the electric telescopic rod (402), one end of the force spring (403) is connected to the connecting carrier (401), and the other end of the force spring (403) is provided with a pressure roller connecting frame (404); A pier pressing roller (410) is rotatably provided on the side of the pressing roller connecting frame (404) away from the force spring (403), and auxiliary rollers (411) are fixedly provided at both ends of the pier pressing roller (410). The diameter of the auxiliary rollers (411) is larger than the diameter of the pier pressing roller (410).

6. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 5, characterized in that: A screw rod (407) is provided on the inner side of the pressure roller connecting frame (404), and the screw rod (407) passes through the pressure roller connecting frame (404) and is rotatably arranged at the bottom end of the pressure roller connecting frame (404). A lifting frame (408) is threadedly connected to the outer side of the screw rod (407), and a cutting machine (409) is fixedly provided on one side of the lifting frame (408). The lifting frame (408) is slidably arranged on the inner side of the pressure roller connecting frame (404).

7. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 6 is characterized in that: The pressure roller frame (404) is provided with a motor (406), and the motor (406) is used to drive the screw rod (407) to rotate.

8. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1 is characterized in that: It also includes a lifting wheel assembly (7), wherein a plurality of lifting wheel assemblies (7) are provided, and the plurality of lifting wheel assemblies (7) are distributed at intervals along the inner surface of the surrounding column rail frame (1); The lifting wheel assembly (7) comprises two symmetrically arranged wheel frames (701) and an auxiliary spring (704) arranged between the two wheel frames (701); a lifting roller (702) is rotatably arranged on the inner side of the bottom end of the wheel frame (701); Fixed support plates (705) are rotatably provided on both sides of the wheel frame (701), and the fixed support plates (705) are arranged on the inner side of the surrounding column rail frame (1); A connecting seat (703) is rotatably provided on each of the two wheel frames (701), and two ends of the auxiliary spring (704) are respectively connected to the two connecting seats (703).

9. The vehicle-mounted integrated maintenance device for concrete bridge piers according to claim 1, characterized in that: It also includes a transport vehicle (8), wherein the telescopic boom assembly (500) is arranged in a compartment of the transport vehicle (8); A reserve water tank (801) and a cushion block (802) are also provided in the compartment of the carrier vehicle (8).

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