WO2012041078A1

WO2012041078A1 - Telescopic discharging device for mortar vehicle and mortar vehicle

Info

Publication number: WO2012041078A1
Application number: PCT/CN2011/075624
Authority: WO
Inventors: 闫炳雷; 徐宏胜; 黄向阳
Original assignee: 湖南三一智能控制设备有限公司; 三一重工股份有限公司
Priority date: 2010-09-28
Filing date: 2011-06-10
Publication date: 2012-04-05
Also published as: CN101947817A; CN101947817B

Abstract

A telescopic discharging device for a mortar vehicle and a mortar vehicle are disclosed. The telescopic discharging device for the mortar vehicle comprises an outlet hopper (18) for finished products. The outlet hopper (18) is connected with the telescopic ends of more than one horizontal telescopic component (20) which is fixed on an upper rack (1) of the mortar vehicle. The mortar vehicle comprises a chassis (9), an upper part and the telescopic discharging device for the mortar vehicle, wherein the upper part is fixed on the chassis (9) by the upper rack (1) of the mortar vehicle. The telescopic discharging device for the mortar vehicle and the mortar vehicle have the advantages of simple structure, simple and convenient operation, high efficiency, low cost, and the like.

Description

Application for Retractable Discharge Device and Mortar for Mortar Cars This application is filed on September 28, 2010 with the Chinese Patent Office, Application No. 201010294913.0, and the invention titled "Retractable Discharge Device for Mortar Car and Its Mortar Car" Priority is hereby incorporated by reference in its entirety. Technical field

The invention mainly relates to the field of mortar equipment, and particularly to a mortar truck.

Background technique

During the construction of the ballastless track high-speed railway, a special asphalt cement mortar (CA mortar or BZM mortar) is poured between the concrete bearing layer of the ballastless track and the inner cavity of the track plate. The mortar is mainly composed of asphalt, water and dry powder. Additives and other ingredients are mixed according to a certain process. In order to facilitate the timely and timely pouring of the agitated mortar into the inner cavity of the track plate, a mobile asphalt cement mortar car (barrel mortar car) is usually used at home and abroad for mortar production and pouring work. The mortar truck is mainly composed of a tractor head, a semi-trailer trailer chassis, a vehicle leveling device and a top loading part, wherein the upper part is a box structure, and the interior contains a storage, conveying and metering system for dry powder, water, asphalt, admixture and the like. Cleaning device, mixer and finished material discharge device. When the mortar truck is working, the conveying device conveys various materials to the mixer located at the tail of the carriage for stirring, and the mixed mortar enters the finished product discharge hopper through the discharge door at the bottom of the mixer, and then the finished product discharge hopper is lifted to a certain extent by the lifting device. The height allows the asphalt cement mortar to be injected into the interior of the track plate through the outlet at the bottom of the hopper under the action of gravity.

As shown in Figs. 1 and 2, in the structure of the conventional mortar truck, the upper frame 1 is placed on the semi-trailer chassis 9, and the mixer 2 is placed at the tail of the upper frame 1. When the mortar truck is running or the mixer is unloading, the piston rod of the lifting cylinder 4 is in a compressed state, so that the lifting arm 3 is in the vertical position, and the discharging hopper 7 is under the action of the pressing cylinder 5 and the mixer discharge port 15 fit. The top edge of the discharge hopper 7 is provided with an elastic rubber crucible 10 for preventing the leakage of the mortar when the mixer 2 is discharged. The rear bumper 6 is fixed to the lift arm 3 to provide protection to the rear of the vehicle body.

When the mortar car is filled with the mortar, the grouting hose 13 is connected to the discharge hopper 7 through the quick joint 11, and at this time, the piston rod of the lift cylinder 4 is extended, and the lift arm 3 is gradually lifted, and the oil is pressed at the same time. The cylinder 5 operates to ensure that the hopper 7 is kept horizontal. When the discharge hopper 7 rises to the filling height, the pneumatic butterfly valve at the bottom of the discharge hopper 7 is opened, and the mortar enters the designated grouting place through the grouting hose 13 and the grouting head 14 under the action of gravity. During the grouting process, the reducer 8 at the bottom of the hopper 7 is always in working state, which drives the stirring blades in the finished product hopper to rotate, ensuring that the mortar in the hopper is completely discharged.

When the mortar truck is working, the level of the finished product hopper must be guaranteed to prevent the mortar from pouring out. Since the leveling device is used on the chassis of the existing mortar truck, the mortar truck can ensure that the upper part of the upper part is kept level on the rough road surface, so the finished product hopper is required to be horizontally level with respect to the entire upper part of the mortar truck. As can be seen from Fig. 1 and Fig. 2, when the lifting cylinder 4 is in operation, the pressing cylinder 5 needs to be accurately operated to ensure that the top of the discharging hopper 7 is always level. Patent No. CN201009365, entitled "A Mortar Car Product Storage Hopper with Horizontal Control Device", proposes a horizontal control device for detecting the inclination of the finished product hopper by the inclination sensor, and detects the inclination control of the hopper in real time. The action of the proportional directional control valve, thereby controlling the speed of movement of the compression cylinder to ensure the level of the finished hopper. However, since the spool of the reversing valve is a spool valve structure, leakage is likely to occur during operation, resulting in poor stability of the device. Once the machine is stopped for a period of time and then re-operated, the corresponding electrical control parameters need to be reset. Patent No. CN201009370 and CN201086360 all mention a method for accurately controlling a compression cylinder using a servo cylinder. The idea is to provide a servo cylinder between the lift arm and the upper frame, the size and stroke of which are The compression cylinders are identical, and the inlet and outlet ports of the servo tank are connected to the inlet and outlet of the compression cylinder, respectively. By accurately calculating the installation position of the servo cylinder, the servo cylinder can always control the precise operation of the compression cylinder during the movement of the lift arm, thereby ensuring the level of the finished product discharge hopper. The control effect of the device is better than that adopted in the CN201009365 patent, but a large amount of calculation is required for the stroke and installation position of the servo cylinder, and the installation accuracy requirement is high, and the internal leakage between the two cylinders is not easy to check.

In addition, as shown in FIG. 1, the existing mortar truck prevents the mortar from leaking when the mixer 2 is unloaded by the friction seal between the elastic rubber crucible 10 at the top of the discharge hopper 7 and the discharge port on the frame, if the rubber is elastic. Preferably, the sealing effect is better, but the wear is very fast, and the rubber crucible needs to be replaced frequently; if the hardness of the rubber crucible is high, the wear resistance is improved, but the sealing effect is poor, and it is easy to collide with the discharge port. Fall off.

Limited by various reasons, at present, the ballastless high-speed railway is mainly based on viaduct construction. The mortar truck can't drive on the railway viaduct. Therefore, it is rare to directly inject the asphalt cement mortar through the finished product hopper. Instead, the finished product hopper is lifted to a certain height, and the mortar is discharged from the hopper to the special one. In the middle bucket (the intermediate bucket also needs to be equipped with a reducer, agitating blades and a control valve), and then the crane is lifted by a crane to inject the mortar. Since the finished product discharge hopper cannot be quickly disassembled, the process requires two kinds of grouting containers, such as a finished product discharge hopper and a transfer bucket, which have high construction cost and require more time in the mortar transfer process, thus resulting in low construction efficiency. Summary of the invention

The technical problem to be solved by the present invention is that: in view of the technical problems existing in the prior art, the present invention provides a compact structure, a low cost, a convenient operation cylinder, a wide adaptability range, and a smooth and rapid discharge of the mortar truck. At the same time, it can greatly improve the construction efficiency of the mortar truck and the expansion and discharge device for the mortar truck and the mortar truck.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A telescopic discharge device for a mortar truck, comprising a finished product discharge hopper, wherein the finished product discharge hopper is connected to one or more telescopic ends of a horizontal expansion and contraction assembly fixed to the upper frame of the mortar truck.

As a further improvement of the invention:

The horizontal telescopic assembly comprises a basic arm fixed to the upper frame of the mortar truck, a horizontal telescopic oil cylinder, and one or more telescopic arms that are sequentially sleeved in the basic arm, and the basic arm is fixed to the mortar car loading rack. The mounting beam on the connection.

A mounting plate is symmetrically disposed on an outer sidewall of the basic arm, and the mounting plate is fixed to the mounting beam by a connecting member. To the bar. - ^SS '' is provided with a coupling body on the telescopic end of the horizontal telescopic assembly, the coupling body is provided with a lifting cylinder assembly arranged in a vertical direction, and the finished product discharge hopper is supported by the lifting cylinder assembly On the telescopic end.

A support plate is disposed on the telescopic end of the lift cylinder assembly, and the support plate is provided with a positioning pin for positioning with the finished product discharge hopper.

The lift cylinder assembly is disposed in the coupling body and the outer side wall of the lift cylinder assembly is fixed On the body.

A bumper is disposed on one end of the coupling body toward the tail end of the mortar.

The bumper is equipped with a taillight and a reflector.

The present invention further discloses a mortar truck comprising a mortar car chassis, a top garment fixed to the mortar car chassis by a mortar truck loading frame, and a stretcher discharge device for the mortar truck according to any of the above.

The finished product discharge hopper includes a bucket body, a stirring mechanism installed in the bucket body, and a quick joint and a manual valve at the bucket body outlet buckle.

More than one lifting lug is provided on the bucket body.

The bucket body is provided with more than one positioning seat for positioning with the telescopic end of the horizontal telescopic assembly.

An elastic gasket is arranged at the edge of the bucket inlet.

The advantages of the present invention over the prior art are:

1. The telescopic discharge device for mortar truck and the mortar truck thereof according to the invention, the structure cylinder is simple and low in cost, and one end of the horizontal telescopic assembly is rigidly connected to the upper frame and adopts a horizontal expansion and contraction manner, which completely solves the construction of the mortar truck. The problem that the discharge hopper cannot maintain the level;

2. The telescopic discharging device for mortar truck of the invention and the mortar truck thereof, the finished product discharging hopper adopts a new design, the finished product discharging hopper is positioned quickly, and has the characteristics of the original finished product discharging hopper and the intermediate rotating bucket, and can be filled in situ. , can also be used as a transfer bucket;

3. The telescopic discharge device for mortar truck of the invention and the mortar truck thereof have higher efficiency than the original discharge device when the construction of the ballastless track on the viaduct or the tunnel is carried out without the need for the transfer of the mortar. And can reduce the number of grouting containers and reduce construction costs;

4. The telescopic discharge device for mortar truck of the invention and the mortar truck thereof, the compression sealing structure is adopted between the discharge hopper and the discharge port, and the sealing performance is greatly improved compared with the original friction sealing structure; 5. The invention The telescopic discharge device for mortar truck and its mortar truck can provide effective safety protection to the mortar truck through the bumper installed at the tail of the telescopic discharge device, and the insurance of the original discharge device can be provided regardless of whether the vehicle is running or under construction. Bars can only provide protection for driving installation.

DRAWINGS 2 is a schematic structural view of a conventional mortar truck in a state of grouting;

Figure 3 is a schematic view showing the structure of a mortar truck equipped with the telescopic discharge device of the present invention when the driving or the mixer is unloaded;

Figure 4 is a rear view structural view of a mortar truck equipped with the telescopic discharge device of the present invention when the vehicle is driven or the mixer is unloaded;

Figure 5 is a schematic view showing the connection between the horizontal telescopic assembly and the mortar car loading frame according to the present invention; Figure 6 is a schematic enlarged view of the connection between the horizontal telescopic assembly and the mortar car loading frame; Figure 7 is the horizontal telescopic assembly when the telescopic arm is extended Schematic;

Figure 8 is a schematic plan view showing the structure of the horizontal telescopic assembly when the telescopic arm is extended;

Figure 9 is a schematic structural view of the lift cylinder assembly when it is in operation;

Figure 10 is a schematic rear view of the mortar truck when the slurry is poured directly into the finished product hopper; Figure 11 is a schematic structural view of the horizontal telescopic assembly and the lift cylinder assembly in the specific embodiment; Figure 12 is a schematic view of the finished product hopper structure in the specific embodiment schematic diagram.

detailed description

The invention will be further described in detail below in conjunction with the drawings and specific embodiments. As shown in Fig. 3, the retractable discharge device for a mortar car of the present invention comprises a finished discharge hopper 18, and the finished discharge hopper 18 is connected to one or more telescopic ends of the horizontal telescopic assembly 20 fixed to the upper frame 1 of the mortar car. The horizontal telescopic assembly 20 and the mortar car top frame 1 may be fixed by screwing or welding. The mortar car top frame 1 is placed on the mortar car chassis 9 and the mixer 2 is placed on the rear end of the mortar car loading rack 1 with a discharge port 16 disposed below it. The leveling device is used on the chassis of the mortar truck, so that the rack 1 of the mortar truck can always be level (not described here).

In the present embodiment, the horizontal telescopic assembly 20 is horizontally fixed to the bottom of the upper mounting frame 1 by the mounting beam 21 in the traveling direction of the vehicle, and its extending direction is directed to the tail portion of the mortar chassis 9. The front end of the horizontal telescopic assembly 20 is provided with a lift cylinder assembly 19 having a vertical direction in the axial direction. The top of the lift cylinder assembly 19 can be placed with the finished discharge hopper 18, and the front end of the horizontal telescopic assembly 20 is also provided with a bumper 17. The bumper 17 is fixed to the front end of the horizontal telescopic assembly 20 by bolts. The shape of the tail can be seen in FIG. 4, and the taillights 172 satisfying the national compulsory certification requirements are installed thereon. And a reflector 171. The arrangement of the luminaires can be freely combined and is not limited to one combination as shown in the figure.

The horizontal telescopic assembly 20 is two and symmetrically arranged with respect to the center plane of the mortar car. For a detailed installation structure diagram of the horizontal telescopic assembly 20, reference may be made to Figs. 3, 5 and 6. Each of the horizontal telescopic assemblies 20 includes a basic arm 201 fixed to the mortar loading frame 1 , a horizontal telescopic cylinder 204 , and a first or more telescopic arms that are sequentially sleeved in the basic arm 201 . The basic arm 201 is fixed to the base arm 201 . The mounting beams 21 on the mortar car top frame 1 are connected. As shown in FIG. 5 and FIG. 11, in the present embodiment, the horizontal telescopic assembly 20 is mainly composed of a basic arm 201, a first section telescopic arm 202 (ie, a telescopic arm), a coupling body 209, and a telescopic cylinder 204 and a piston rod 205 therein. The first cylinder support 203 and the second cylinder support 206 are formed. Referring to FIG. 6, the cross-sectional shape of the basic arm 201 and the first telescopic arm 202 are both rectangular hollow rings, and the basic arm 201 has a large cross-sectional dimension, and the first telescopic arm 202 can be placed therein with a gap, and the gap distance is All are equal. In order to move the first section telescopic arm 202 along a linear path when the telescopic arm 202 is telescopic, four guide bars 207 are disposed between the first section telescopic arm 202 and the base arm 201. The material of the guide strip 207 may be a steel plate or a wear-resistant hard rubber. Mounting plates 208 are symmetrically welded to the outer casings of the base arms 201, and the mounting plates 208 are secured to the mounting beams 21 by bolts 22, spring washers 23 and nuts 24. In the present invention, there are three mounting beams 21 which are parallel to each other, and both ends of each of the mounting beams 21 are welded to the upper frame 1, so that the basic arms 201 are fixed to the mortar rack.

As shown in FIG. 11, the telescopic cylinder 204 and the piston rod 205 are disposed in the inner cavity of the telescopic arm, wherein one end of the telescopic cylinder 204 is hinged with the first cylinder support 203 fixed to the coupling body 209, and one end of the piston rod 205 is The two cylinder holders 206 are hinged, and the second cylinder holder 206 is fixed to the mortar car loading frame 1. Since the coupling body 209 is fixed to the front end of the first section telescopic arm 202, when the piston rod 205 is extended and contracted, the telescopic cylinder 204 can drive the first section telescopic arm 202 to complete the extension and contraction movement. Of course, the piston rod 205 can also be hinged to the first cylinder holder 203, and the telescopic cylinder 204 is hinged to the second cylinder holder 206, and the functions are exactly the same. In this embodiment, the coupling body 209 fixed to the front end of the telescopic arm is machined with a threaded hole in a plane on the outer side of the vehicle body for mounting the bumper 17; the inner vertical direction of the lifting cylinder assembly 19 is passed through, and The outer casing of the cylinder 191 of the lift cylinder assembly is fixed to the coupling body 209. The lift cylinder piston rod 192 of the lift cylinder assembly 19 is located above the cylinder block 191 with a support plate 193 attached to the top. Support plate 193 and The lift cylinder piston 192 has a vertical axis direction and may have a circular, square or other shape in plan view. A positioning pin 194 is disposed on the support plate 193 in the axial direction of the cylinder, and the positioning pin 194 has a cylindrical shape at the lower end and a conical shape at the top.

The present invention further provides a mortar truck comprising a mortar car chassis 9, a top garment fixed to the mortar car chassis 9 by a mortar truck loading frame 1, and the above-described mortar vehicle telescopic discharge device.

As shown in Fig. 12, in the present embodiment, the finished product discharge hopper 18 can satisfy the functions required for the transfer and casting of the mortar. The finished product discharge hopper 18 mainly includes a bucket body 181, a stirring mechanism, a manual valve 185, a quick joint 11, an elastic gasket 183, a lifting lug 182, a positioning seat 184, and a waterproof socket 187. The stirring mechanism includes a stirring blade 186 and a speed reducer 8 which is mounted at a center position of the bottom plate inside the bucket body 181, and is driven by a speed reducer 8 outside the bucket body 181. The bottom plate of the finished product discharge hopper 18 has a certain inclination angle, which facilitates the discharge of the mortar completely. The manual valve 185 and the quick joint 11 are sequentially installed at the discharge port position of the finished discharge hopper 18, the manual valve 185 is used to control the discharge of the finished discharge hopper 18, and the quick joint 11 is used for quickly loading and unloading the grout hose 13. An elastic sealing pad 183 is mounted on the edge of the feeding port of the bucket body 181. When the finished product discharging hopper 18 is sent to the bottom of the mixer 2 for feeding, the elastic sealing gasket 183 can be acted upon by the lifting cylinder assembly 19. It is closely adhered to the discharge port 16 of the mixer 2 to prevent the mortar from leaking when the mixer is unloaded. The bucket body 181 of the finished product discharge hopper 18 is uniformly welded with the lifting lugs 182, and a pair of positioning seats 184 are fixed near the upper edge of the bucket body 181. The shape of the inner cavity of the positioning seat 184 is the same as the shape of the positioning pin 194 of the lifting cylinder assembly 19, and the gap between them is a clearance fit. Since there are two horizontal telescopic assemblies 20 in this embodiment, there are two lift cylinder assemblies 19 such that the central bore distance of the two retaining seats 184 is the center distance from the positioning pins 194 of the two lift cylinder assemblies 19. The same is true, so that the finished discharge hopper 18 can be placed on the support plate 193 at the top of the lift cylinder piston rod 192, and the finished discharge hopper 18 remains horizontal. The positioning seat 184 is disposed at an angle to the lifting lugs 182 without interfering with each other. Since the stirring hopper 18 of the finished product hopper 18 needs to be kept in a stirring state during the process of receiving, transferring, grouting, etc., a waterproof socket 187 is fixed at the bottom of the bucket body 181 of the finished product hopper 18 for external power supply, and the opening of the waterproof socket 187 Down, the back of the plug is connected to the motor junction box of the reducer 8 via a cable 188. When the finished product discharge hopper 18 directly performs the grouting work, the waterproof socket 187 can be directly connected with the output end of the mortar car with the generator; when the finished product discharge hopper 18 needs to be hoisted to it The waterproof socket 187 can be coupled to other separate power sources when its location is grouting.

When the mortar truck is running, the horizontal telescopic assembly 20 and the lift cylinder assembly 19 are fully contracted, and the rear end of the safety bar 17 and the rear end of the mortar loading frame 1 are in a plane, and the rear end of the mortar can be safely protected. At this point, the finished hopper 18 can be placed on the support plate 193 at the top of the lift cylinder assembly 19, or it can be shipped separately from other vehicles.

When the mixer 2 of the mortar truck performs unloading, as shown in Fig. 3, the finished discharge hopper 18 is placed on the support plate 193 at the top of the lift cylinder assembly 19, and the horizontal telescopic assembly 20 is in a fully contracted state. At this time, the elastic gasket 183 at the top of the finished product hopper 18 is closely attached to the discharge port 16 of the mixer 2 under the action of the lift cylinder assembly 19 to prevent the mortar from splashing during discharge. The mixer of the mortar truck 2 During the unloading process, the manual valve 185 of the finished product hopper 18 is closed, and the speed reducer 8 always drives the stirring blade 186 to agitate the mortar to prevent sedimentation or segregation of the mortar.

After the unloading of the mixer 2, as shown in Fig. 7 and Fig. 8, the horizontal telescopic assembly 20 of the mortar truck protrudes under the action of the cylinder, and the finished discharge hopper 18 is extended beyond the mortar truck. At this time, if the pouring operation of the ballastless track on the viaduct is performed, the rope 25 can be directly fixed to the lifting lug 182 of the finished discharge hopper 18, and the finished hopper 18 can be lifted to the designated station for mortar by using the crane hook 26. The pouring can be done. In order to improve the production efficiency, after the finished product discharge hopper 18 filled with the mortar is lifted, an empty finished discharge hopper 18 can be placed on the top of the lift cylinder assembly 19, and then the horizontal expansion and contraction assembly 20 is contracted, and the empty discharge hopper is sent to the mixer. Below the discharge port 16 of 2, wait for the next discharge of the mixer 2. If the pouring station is near the mortar truck and the terrain is low, the lifting cylinder piston rod 192 of the lifting cylinder assembly 19 can be extended, and the finished product hopper 18 can be lifted to a certain height and installed by the quick joint 11. The grouting hose 13 and the grouting head 14 are directly filled with the mortar, and the working state is as shown in Figs. 9 and 10. After the mortar in the finished product hopper 18 is poured, the grouting hose 13 is removed through the quick joint 11, the lift cylinder assembly 19 is fully contracted, and then the horizontal telescopic assembly 20 is contracted, and the empty finished product hopper 18 is sent to the unloading of the blender 2. Below the spout 16, wait for the next discharge of the blender 2. When the finished product hopper 18 is subjected to mortar infusion, the manual valve 185 is opened, and the speed reducer 8 still drives the stirring blade 186 to rotate, so that the mortar in the bucket is completely discharged.

The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and all the technical solutions under the inventive concept belong to the protection scope of the present invention. It should be noted that one of ordinary skill in the art will not be able to devise the principles of the present invention. Several modifications and refinements are considered to be within the scope of the invention.

Claims

Rights request

1. A telescopic discharge device for a mortar truck, comprising a finished product discharge hopper (18), characterized in that: the finished product discharge hopper (18) and one or more horizontally stretched and fixed on a mortar car loading frame (1) The telescopic ends of the components (20) are connected.

The expansion and discharge device for a mortar truck according to claim 1, wherein the horizontal expansion and contraction assembly (20) comprises a basic arm (201) fixed to the upper frame (1) of the mortar car, and horizontally stretched a cylinder (204) and one or more telescopic arms sequentially disposed in the basic arm (201), wherein the basic arm (201) is connected to a mounting beam (21) fixed to the mortar mounting frame (1) .

The telescopic discharge device for a mortar truck according to claim 2, wherein: the outer side wall of the basic arm (201) is symmetrically provided with a mounting plate (208), and the mounting plate (208) is connected by The piece is fixed to the mounting beam (21).

The expansion and discharge device for a mortar truck according to claim 2, wherein: one or more guide bars are disposed between the basic arm (201) and an adjacent telescopic arm and between adjacent telescopic arms ( 207).

The telescopic discharge device for a mortar vehicle according to claim 1 or 2 or 3 or 4, wherein: the telescopic end of the horizontal expansion and contraction assembly (20) is provided with a coupling body (209), the coupling The body (209) is provided with a lift cylinder assembly (19) arranged in a vertical direction, and the finished discharge hopper (18) is supported on the telescopic end of the lift cylinder assembly (19).

The telescopic discharge device for a mortar truck according to claim 5, wherein: the telescopic end of the lift cylinder assembly (19) is provided with a support plate (193) on the support plate (193). A locating pin (194) for positioning with the finished discharge hopper (18) is provided.

The telescopic discharge device for a mortar truck according to claim 5, wherein: the lift cylinder assembly (19) is disposed in the coupling body (209) and lifts an outer side wall of the cylinder assembly (19) It is fixed to the coupling body ( 209 ).

The expansion and discharge device for a mortar car according to claim 5, wherein a bumper (17) is provided on one end of the coupling body (209) toward the rear end of the mortar.

The telescopic discharge device for a mortar car according to claim 8, wherein the bumper (17) is provided with a taillight (172) and a reflector (171).

10. A mortar car comprising a mortar car chassis (9), a top plate fixed to the mortar car chassis (9) by a mortar car loading frame (1), characterized in that: further comprising any of the above claims 1-9 A retractable discharge device for mortar vehicles.

The mortar truck according to claim 10, characterized in that the finished product discharge hopper (18) comprises a bucket body (181), a stirring mechanism installed in the bucket body (181), and a bucket body (181). Quick coupling (11) and manual valve (185) at the discharge port.

12. A mortar truck according to claim 11, wherein: the bucket body (181) is provided with more than one lifting lug (182).

13. The mortar truck according to claim 11, wherein: the bucket body (181) is provided with one or more positioning seats for cooperating with the telescopic end of the horizontal telescopic assembly (20).

( 184).

14. The mortar truck according to claim 11, wherein: an elastic gasket (183) is disposed at an edge of the inlet of the bucket body (181).