A mixer truck intelligent alignment unloading device

Abstract

The utility model discloses a kind of intelligent alignment unloading devices of mixer truck, comprising: unloading warehouse, and installed at the upper portion of unloading warehouse secondary hopper, alignment device and splash-proof device;Prevent slurry splash splash-proof device to be set in secondary hopper lower part;Unloading warehouse is provided with mark line, for driver observation to control the driving route of mixer truck into unloading warehouse;Alignment device has trigger and mechanical trigger switch located at the rear side of secondary hopper and cooperate, and sound-light prompter located at the front side of secondary hopper and mechanical trigger switch communication, by mixer truck rear contact and extrude trigger to make it with mechanical trigger switch contact, and by sound-light prompter remind driver to move in position, to align the feeding system of mixer truck with secondary hopper.The utility model passes through the adoption mark line, trigger and sound-light prompt linkage, driver once backs up can be automatically aligned secondary hopper, save repeatedly in and out, unloading efficiency is improved, and collision risk is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of construction engineering technology, specifically, it is an intelligent positioning and unloading device for a concrete mixer truck. Background Technology

[0002] With the increasing demand for ready-mixed concrete, batching plants need to efficiently complete multiple continuous unloading operations within limited space. Traditional methods rely on manual guidance for reversing, with drivers using experience to align the vehicle's feed inlet with the unloading hopper. This process is time-consuming, prone to errors, and generates significant dust and noise, making management difficult.

[0003] In addition, existing technologies only have fixed hoppers and simple baffles, which cannot adapt to vehicles of different heights. When the slurry drop is large, it splashes severely, polluting the vehicle and the site. Manual alignment errors cause spillage and overflow, increasing cleaning costs. The lack of real-time full material detection means that material can only be stopped based on experience, which wastes slurry and affects continuous production. Therefore, an intelligent alignment and unloading device for mixer trucks is needed to meet people's production needs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an intelligent alignment and unloading device for mixer trucks, which solves the problems of large alignment errors, slurry splashing and environmental pollution, inability to identify full load and stop unloading in real time, and poor versatility for multiple vehicle models caused by traditional manual reversing.

[0005] The present invention solves the above problems through the following technical solution:

[0006] A smart alignment and unloading device for a concrete mixer truck includes: an unloading hopper, a secondary hopper installed above the unloading hopper, an alignment device, and a splash guard; wherein, the splash guard to prevent slurry splashing is located at the lower part of the secondary hopper; the unloading hopper is marked with a line for the driver to observe and control the driving route of the concrete mixer truck into the unloading hopper; the alignment device has a trigger and a mechanical trigger switch located at the rear of the secondary hopper and cooperating with it, and an audible and visual prompter located at the front of the secondary hopper and communicating with the mechanical trigger switch. The trigger is contacted and squeezed by the rear of the concrete mixer truck to make it contact the mechanical trigger switch, and the audible and visual prompter reminds the driver to move into position to align the concrete mixer truck's feeding system with the secondary hopper.

[0007] As a further improvement, the marking line is a centering marking line, which is set at the bottom of the unloading hopper;

[0008] And / or an IoT monitoring camera is mounted on the rear side of the secondary hopper via a camera bracket, with the IoT monitoring camera facing the feeding system of the mixer truck.

[0009] As a further improvement, the secondary hopper and the alignment device are mounted on the unloading hopper via a support bracket, and the trigger and mechanical trigger switch of the alignment device are adjustable in vertical position.

[0010] As a further improvement, the splash-proof device includes: a height-adjustable first mounting frame and a second mounting frame, and a movable frame disposed on the first mounting frame or the second mounting frame respectively and capable of relative movement, so as to cover the lower end of the secondary hopper through the relative movement of the movable frame, and to connect the secondary hopper and the feeding system of the mixer truck by adjusting the height of the first mounting frame and the second mounting frame, so as to prevent slurry splashing.

[0011] As a further improvement, the splash-proof device also includes: two first fixed plates fixedly installed on both sides of the secondary hopper, the two first fixed plates being connected to a first mounting bracket or a second mounting bracket respectively through no less than two auxiliary sliding rods, and an electric push rod fixedly installed on one side of the first fixed plate, the movable push rod on the electric push rod passing through the first fixed plate and connected to the first mounting bracket on the same side, so as to achieve height adjustment by driving the first mounting bracket and the second mounting bracket through the electric push rod.

[0012] As a further improvement, a first lead screw and a first slide bar are connected between the first mounting bracket and the second mounting bracket. The two movable frames are respectively connected to the first lead screw and the first slide bar. A first motor connected to the first lead screw is fixed on the second mounting bracket or the first mounting bracket, so as to control the rotation of the first lead screw through the first motor, thereby driving the two movable frames to move towards each other or away from each other.

[0013] As a further improvement, the discharge port of the secondary hopper is located between the first lead screw and the first slide bar;

[0014] And / or a rubber baffle is fixedly installed on the movable frame.

[0015] As a further improvement, the alignment device further includes: a second slide rod and a second lead rod fixed at both ends to the support bracket and arranged on the left and right sides; a crossbar is installed on both the second slide rod and the second lead rod; a trigger and a mechanical trigger switch are arranged on the crossbar; one end of the second lead rod is connected to a second motor fixed to the support bracket, so that the second lead rod is driven to rotate by the second motor, thereby causing the trigger and the mechanical trigger switch to move up and down with the crossbar.

[0016] As a further improvement, the crossbar is slidably engaged with the second slide bar, and the crossbar is threadedly connected to the second lead screw.

[0017] As a further improvement, the trigger and the mechanical trigger switch are located on the same side of the crossbar;

[0018] The trigger includes a trigger rod, a trigger plate, several nuts, and a spring. The trigger rod is slidably limited and installed on the crossbar. The trigger plate, nuts, and spring are sleeved on one end of the trigger rod. Nuts are provided on both sides of the trigger plate. The spring and the mechanical trigger switch are located between the crossbar and the nuts, so that the trigger rod can slide relative to the crossbar by squeezing it, and the spring can be compressed to make the trigger plate contact the mechanical trigger switch.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] (1) By using a trigger and sound and light prompt linkage, the driver can automatically align with the secondary hopper with one reverse, saving the need for repeated forward and backward movements, improving unloading efficiency and greatly reducing the risk of collision.

[0021] (2) This utility model uses a motor to drive a screw to drive the rubber baffle to rise and fall with the vehicle and close left and right to form a flexible enclosure, which avoids slurry splashing, reduces on-site cleaning water, is environmentally friendly and extends the baffle's life.

[0022] (3) This utility model uses an IoT camera to identify the slurry height at the feed inlet in real time and automatically stops unloading to avoid overflow and waste; the whole set of equipment can be modularly installed in existing unloading warehouses and supports multiple vehicle models. Attached Figure Description

[0023] Figure 1 This is a three-dimensional front view of the intelligent alignment and unloading device of this utility model;

[0024] Figure 2 This is a rear-view three-dimensional schematic diagram of the intelligent alignment and unloading device of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the unloading silo of this utility model;

[0026] Figure 4 This is a structural diagram of the secondary hopper and splash guard of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the splash-proof device of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the alignment assembly of this utility model;

[0029] Figure 7 This utility model Figure 6 A magnified structural diagram of part A in the middle.

[0030] Reference numerals: 1. Unloading hopper; 2. Splash preventer; 3. Alignment device; 4. Mixer truck; 5. Secondary hopper; 6. Support bracket; 7. Camera bracket; 8. IoT monitoring camera; 9. Centering mark line; 200. First fixing plate; 201. Electric push rod; 202. First mounting bracket; 203. Second mounting bracket; 204. Auxiliary slide rod; 205. Limiting plate; 206. First motor; 207. First lead screw; 208. First slide rod; 209. Moving frame; 210. Rubber baffle; 300. Second fixing plate; 301. Second slide rod; 302. Second lead screw; 303. Second motor; 304. Crossbar; 305. Trigger; 306. Trigger rod; 307. Trigger plate; 308. Nut; 309. Spring; 310. Mechanical trigger switch; 311. Indicator bracket; 312. Audible and visual indicator. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1:

[0033] like Figure 1-7 As shown, this utility model embodiment provides an intelligent alignment and unloading device for a mixer truck, including: an unloading hopper 1, a secondary hopper 5 installed above the unloading hopper 1, an alignment device 3, and a splash guard 2; wherein, the splash guard 2, which prevents slurry from splashing, is located at the lower part of the secondary hopper 5; the unloading hopper 1 is provided with a marking line for the driver to observe and control the driving route of the mixer truck into the unloading hopper 1; the alignment device 3 has a trigger 305 and a mechanical trigger switch 310 located on the rear side of the secondary hopper 5 and cooperating with it, and an audible and visual prompter 312 located on the front side of the secondary hopper 5 and communicating with the mechanical trigger switch 310. The rear of the mixer truck contacts and squeezes the trigger 305 to make it contact the mechanical trigger switch 310, and the audible and visual prompter 312 reminds the driver to move into position so as to align the feeding system of the mixer truck 4 with the secondary hopper 5.

[0034] Specifically, the secondary hopper 5 is fixedly installed on the upper side of the unloading silo 1 via a support bracket 6. A camera bracket 7 is fixedly installed on the rear side of the secondary hopper 5, and an IoT monitoring camera 8 is fixedly installed on the camera bracket 7. The IoT monitoring camera 8 is set towards the feeding system of the mixer truck 4 to observe the feeding status of the feeding system of the mixer truck 4. A centering mark line 9 is set on the bottom of the unloading silo 1 to facilitate alignment for various vehicle types. The splash guard 2 is fixedly installed on the secondary hopper 5 and located at the lower part of the secondary hopper 5. The splash guard 2 can prevent mud from splashing when the unloading silo 1 performs unloading operations. The alignment device 3 is fixedly installed on the support brackets 6 on both sides of the unloading silo 1. The trigger 305 and the mechanical trigger switch 310 of the alignment device 3 are adjustable in height to adapt to different vehicle types. The alignment device 3 can facilitate the driver to align the feeding system of the mixer truck 4 with the secondary hopper 5 when reversing into the silo.

[0035] To achieve intelligent alignment between the vehicle and the unloading hopper during unloading and to prevent slurry splashing, the anti-splash device 2 includes: a height-adjustable first mounting frame 202 and a second mounting frame 203, and a movable frame 209 that is respectively mounted on the first mounting frame 202 or the second mounting frame 203 and can move relative to each other. The movable frame 209 covers the lower end of the secondary hopper 5 through relative movement, and the height of the first mounting frame 202 and the second mounting frame 203 is adjusted to connect the feeding system of the secondary hopper 5 and the mixer truck 4 to prevent slurry splashing.

[0036] Specifically, the splash-proof device 2 includes two first fixed plates 200, which are arranged opposite each other and fixedly installed on both sides of the secondary hopper 5. An electric push rod 201 is fixedly installed on one of the first fixed plates 200. A movable push rod on the electric push rod 201 passes through the first fixed plate 200, and a first mounting bracket 202 is fixedly installed at one end of the movable push rod passing through the first fixed plate 200. A second mounting bracket 203 is installed below the first fixed plate 200 on the side away from the electric push rod 201. A first lead screw 207 and a first sliding rod 208 are rotatably connected between the first mounting bracket 202 and the second mounting bracket 203. A first motor 206 is fixedly installed on the side. The output shaft of the first motor 206 is fixedly connected to the first lead screw 207. The discharge port of the secondary hopper 5 is located between the first lead screw 207 and the first slide bar 208. Two opposing movable frames 209 are slidably installed on the first lead screw 207 and the first slide bar 208. A rubber baffle 210 is fixedly installed on the movable frame 209. The movable frame 209 is threadedly connected to the first lead screw 207 and slidably connected to the first slide bar 208. An auxiliary slide bar 204 is slidably installed on the first fixed plate 200. A limit plate 205 is fixedly installed at one end of the auxiliary slide bar 204, and the other end of the auxiliary slide bar 204 is fixedly connected to the first mounting frame 202 and the second mounting frame 203 respectively.

[0037] The alignment device 3 further includes: a second slide bar 301 and a second lead screw 302, both ends of which are fixed to the support bracket 6 and arranged left and right. A crossbar 304 is mounted on both the second slide bar 301 and the second lead screw 302. A trigger 305 and a mechanical trigger switch 310 are arranged on the crossbar 304. One end of the second lead screw 302 is connected to a second motor 303 fixed to the support bracket 6, so that the second motor 303 drives the second lead screw 302 to rotate, thereby driving the trigger 305 and the mechanical trigger switch 310 to move up and down with the crossbar 304.

[0038] Specifically, the alignment device 3 has a second fixing plate 300, which is fixedly installed on the support brackets 6 on both sides of the unloading hopper 1. Two second fixing plates 300 are installed on the support brackets 6 on the same side. A second sliding rod 301 is rotatably installed on the two second fixing plates 300 on one side, and a second lead screw 302 is rotatably installed on the two second fixing plates 300 on the other side. A second motor 303 is fixedly installed on the second fixing plate 300 near the second lead screw 302. A crossbar 304 is slidably installed on the second sliding rod 301 and the second lead screw 302. A trigger 305 is slidably installed on the crossbar 304. A mechanical trigger switch 310 is fixedly installed on one side of the crossbar 304. A prompting bracket 311 is fixedly installed on the side of the unloading hopper 1 away from the secondary hopper 5. An audible and visual prompter 312 is fixedly installed on the prompting bracket 311. The crossbar 304 is slidably engaged with the second sliding rod 301, and the crossbar 304 is threadedly connected to the second lead screw 302.

[0039] In an optional embodiment, the trigger 305 comprises a trigger rod 306, a trigger plate 307, a nut 308, and a spring 309. The trigger plate 307, nut 308, and spring 309 are sleeved on one end of the trigger rod 306. There are two nuts 308, and at least two nuts 308 are located on both sides of the trigger plate 307. The spring 309 is located between the crossbar 304 and the nut 308 near the crossbar 304. The mechanical trigger switch 310 is located between the crossbar 304 and the nut 308, so that by pressing the trigger rod 306, it slides relative to the crossbar 304, and by compressing the spring 309, the trigger plate 307 comes into contact with the mechanical trigger switch 310. In this embodiment, the trigger rod 306 can move back and forth relative to the crossbar 304 and has a limiting cap at its rear end to limit the rear end of the trigger rod 306 to the rear side of the crossbar 304.

[0040] Example 2:

[0041] The specific steps for using an intelligent alignment and unloading device for a concrete mixer truck are as follows:

[0042] S1. When the mixer truck 4 is ready to be loaded, the driver drives the mixer truck 4 to reverse the vehicle into the unloading silo 1 according to the centering mark line 9 on the unloading silo 1. The centering mark line 9 is used to locate the center position of the vehicle. When reversing, the vehicle should be kept as centered as possible.

[0043] S2. As the mixer truck 4 is poured in, the mixer truck 4 will gradually press against the trigger 305 and drive the trigger plate 307 to move towards the mechanical trigger switch 310. As the trigger 305 moves, when the trigger plate 307 presses against the mechanical trigger switch 310, the mechanical trigger switch 310 triggers an electrical signal.

[0044] S3. After the mechanical trigger switch 310 triggers the signal, the audible and visual reminder 312 emits an audible and visual reminder to remind the driver that the vehicle has reversed to the designated position. At this time, the discharge port of the secondary hopper 5 is directly facing the feeding system of the mixer truck 4.

[0045] S4. At this time, the main controller starts the first motor 206. After the first motor 206 starts, it drives the two moving frames 209 to move towards each other through the first lead screw 207. When the moving frames 209 clamp the feeding system of the mixer truck 4, the rubber baffle 210 can block the discharge port of the secondary hopper 5 when it unloads the material to prevent the slurry from splashing.

[0046] Working Principle: The motor, IoT monitoring camera 8, audible and visual alert 312, and mechanical trigger switch 310 of this device need to be connected to an external main controller. The main controller and relays work together to control their switching and signal transmission / reception. The secondary hopper 5 is connected to a traditional unloading and conveying device. The secondary hopper 5 also has a device for controlling the opening and closing of the discharge port. These are all existing technologies necessary for this device to achieve unloading. Structures and technologies not detailed in this document are the same as those commonly used in existing concrete mixer truck unloading technologies.

[0047] The conveying device feeds the slurry into the secondary hopper 5. The sensor inside the secondary hopper 5 detects that the secondary hopper 5 is full and stops the conveying device from feeding. The secondary hopper 5 is equipped with a stirring device to continuously stir the slurry to prevent it from solidifying inside the secondary hopper 5.

[0048] During the initial setup, the position of trigger 305 needs to be calibrated. During calibration, the mixer truck 4 is poured into the unloading hopper 1, ensuring the feed device of the mixer truck 4 is aligned with the discharge port of the secondary hopper 5. At this point, the positions of nut 308 and trigger plate 307 are adjusted so that one end of trigger 305 is pressed against the body of the mixer truck 4, while trigger plate 307 presses against the mechanical trigger switch 310 and remains triggered. This completes the calibration. Subsequently, when another mixer truck 4 of the same model is poured in, trigger 305 will be correctly recognized and triggered.

[0049] When the mixer truck 4 needs to be loaded, the driver controls the mixer truck 4 to pour it into the unloading hopper 1. When reversing, the driver can refer to the centering mark line 9 to ensure that the vehicle is centered.

[0050] As the vehicle reverses in, its rear end slides against the trigger 305 within the crossbar 304 until the trigger plate 307 on the trigger 305 presses against the mechanical trigger switch 310 and triggers it. Upon activation of the mechanical trigger switch 310, the audible and visual indicator 312 activates, emitting an audible and visual warning. The driver can then stop reversing after observing the warning from the indicator 312. The feed inlet of the mixer truck 4 is located directly below the discharge outlet of the secondary hopper 5. At this point, the secondary hopper 5 can begin unloading, and the slurry inside falls into the mixing tank of the mixer truck 4.

[0051] The IoT monitoring camera 8 can identify the real-time video footage of the feed inlet of the mixer truck 4. Through the training of the deep image model, the IoT monitoring camera 8 can identify the slurry flow device at the feed inlet of the mixer truck 4. When the IoT monitoring camera 8 identifies that the feed inlet of the mixer truck 4 is filled with slurry, it means that the tank of the mixer truck 4 is filled with slurry. At this time, the secondary hopper 5 can be stopped to unload the mixer truck 4.

[0052] If the height difference between the feeding system of the mixer truck 4 and the discharge port of the secondary hopper 5 is too large, the slurry will splash around the discharge port of the secondary hopper 5 during unloading. In this case, the first motor 206 can be started by the main controller. After the first motor 206 starts, it drives the moving frames 209 on both sides to move towards each other via the first lead screw 207 until the moving frames 209 clamp the discharge port of the secondary hopper 5. Then, the electric push rod 201 is started, pushing out the push rod. The push rod pushes the first mounting bracket 202 and the second mounting bracket 203, causing the moving frames 209 and the rubber baffle 210 to descend. At this time, the end of the rubber baffle 210 away from the secondary hopper 5 is placed at the feeding port of the mixer truck 4. The rubber baffle 210 prevents the slurry from splashing during unloading. After the mixer truck 4 finishes loading, the electric push rod 201 is retracted first. At this time, the rubber baffle 210 separates from the feeding port of the mixer truck 4, and the mixer truck 4 can then drive away. By adjusting the height of the rubber baffle 210 using the electric push rod 201, compared to directly placing the rubber baffle 210 on the discharge port of the secondary hopper 5, this device can reduce the friction between the rubber baffle 210 and the discharge port of the mixer truck 4, thereby extending the service life of the rubber baffle 210.

[0053] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A smart positioning and unloading device for a concrete mixer truck, characterized in that, include: The unloading hopper (1), and the secondary hopper (5), alignment device (3) and anti-splash device (2) installed above the unloading hopper (1); wherein, the anti-splash device (2) for preventing slurry splashing is set at the lower part of the secondary hopper (5); the unloading hopper (1) is marked with a line for the driver to observe and control the driving route of the mixer truck entering the unloading hopper (1); the alignment device (3) has a trigger (305) and a mechanical trigger switch (310) located on the rear side of the secondary hopper (5) and in cooperation with it, and an audible and visual prompter (312) located on the front side of the secondary hopper (5) and communicating with the mechanical trigger switch (310). The trigger (305) is contacted and squeezed by the rear of the mixer truck to make it contact the mechanical trigger switch (310), and the audible and visual prompter (312) reminds the driver to move into position so as to align the feeding system of the mixer truck (4) with the secondary hopper (5).

2. The intelligent positioning and unloading device for a mixer truck according to claim 1, characterized in that, The marking line is a centering marking line (9), which is set at the bottom of the unloading silo (1); And / or an IoT monitoring camera (8) is mounted on the rear side of the secondary hopper (5) via a camera bracket (7), the IoT monitoring camera (8) being positioned facing the feeding system of the mixer truck (4).

3. The intelligent positioning and unloading device for a mixer truck according to claim 1, characterized in that, The secondary hopper (5) and the alignment device (3) are mounted on the unloading silo (1) via a support bracket (6), and the upper and lower positions of the trigger (305) and the mechanical trigger switch (310) of the alignment device (3) are adjustable.

4. The intelligent positioning and unloading device for a mixer truck according to claim 3, characterized in that, The splash-proof device (2) includes: a height-adjustable first mounting frame (202) and a second mounting frame (203), and a movable frame (209) disposed on the first mounting frame (202) or the second mounting frame (203) respectively and capable of relative movement, so as to cover the lower end of the secondary hopper (5) by relative movement of the movable frame (209), and to connect the feeding system of the secondary hopper (5) and the mixer truck (4) by adjusting the height of the first mounting frame (202) and the second mounting frame (203) to prevent slurry splashing.

5. The intelligent positioning and unloading device for a mixer truck according to claim 4, characterized in that, The splash-proof device (2) further includes: two first fixed plates (200) fixedly installed on both sides of the secondary hopper (5). The two first fixed plates (200) are respectively connected to a first mounting frame (202) or a second mounting frame (203) through no less than two auxiliary slide rods (204). An electric push rod (201) is fixedly installed on one side of the first fixed plate (200). The movable push rod on the electric push rod (201) passes through the first fixed plate (200) and is connected to the first mounting frame (202) on the same side, so that the first mounting frame (202) and the second mounting frame (203) can be height-adjustable by driving the electric push rod (201).

6. The intelligent positioning and unloading device for a mixer truck according to claim 4, characterized in that, A first lead screw (207) and a first slide bar (208) are connected between the first mounting bracket (202) and the second mounting bracket (203). Two movable frames (209) are respectively connected to the first lead screw (207) and the first slide bar (208). A first motor (206) connected to the first lead screw (207) is fixed on the second mounting bracket (203) or the first mounting bracket (202) so as to control the rotation of the first lead screw (207) through the first motor (206), thereby driving the two movable frames (209) to move towards each other or away from each other.

7. The intelligent positioning and unloading device for a mixer truck according to claim 6, characterized in that, The discharge port of the secondary hopper (5) is located between the first lead screw (207) and the first slide bar (208); A rubber baffle (210) is fixedly installed on the movable frame (209).

8. The intelligent positioning and unloading device for a mixer truck according to claim 3, characterized in that, The alignment device (3) further includes: a second slide rod (301) and a second lead screw (302) fixed at both ends on the support bracket (6) and arranged left and right. A crossbar (304) is installed on the second slide rod (301) and the second lead screw (302). A trigger (305) and a mechanical trigger switch (310) are arranged on the crossbar (304). One end of the second lead screw (302) is connected to a second motor (303) fixed on the support bracket (6) so that the second lead screw (302) can be driven to rotate by the second motor (303) so as to drive the trigger (305) and the mechanical trigger switch (310) to move up and down with the crossbar (304).

9. The intelligent positioning and unloading device for a mixer truck according to claim 8, characterized in that, The crossbar (304) is slidably engaged with the second slide bar (301), and the crossbar (304) is threadedly connected with the second lead screw (302).

10. The intelligent positioning and unloading device for a mixer truck according to claim 8, characterized in that, The trigger (305) and the mechanical trigger switch (310) are located on the same side of the crossbar (304); The trigger (305) includes: a trigger rod (306), a trigger plate (307), several nuts (308) and a spring (309). The trigger rod (306) is slidably limited and installed on the crossbar (304). The trigger plate (307), nuts (308) and spring (309) are sleeved on one end of the trigger rod (306). Nuts (308) are provided on both sides of the trigger plate (307). The spring (309) and the mechanical trigger switch (310) are located between the crossbar (304) and the nuts (308) so that the trigger rod (306) can slide relative to the crossbar (304) by squeezing it, and the spring (309) can be compressed to make the trigger plate (307) contact the mechanical trigger switch (310).

Images