A weighing tow rope sensor device for a commercial concrete truck

Abstract

The utility model relates to the technical field of concrete truck sensor, disclose a kind of commercial concrete truck weighing tug sensor device, including installation sleeve body, installation sleeve body is passed in the inside of tug, the surface of installation sleeve body is fixedly installed with protection strip, the inner surface of installation sleeve body is fixedly connected with protection frame, sensor is placed in the inside of installation sleeve body, the end of installation sleeve body is fixedly installed with screw fixing mouth, the inboard of screw fixing mouth is fixedly installed with connecting plate, and the surface of connecting plate is equipped with threading hole, and the signal cable of sensor is led out by this. The utility model is through the rubber protection strip of installation sleeve body outer surface circumferential even distribution, preferentially buffer external impact energy, reduce installation sleeve body direct stress;While inside multiple rubber protection frames are along the axial abutment sensor outer circumferential surface, form radial elastic buffer. Double structure synergies, effectively weaken the impact of pavement bump, cylinder vibration and other dynamic load to sensor.

Description

Technical Field

[0001] This utility model relates to the field of concrete mixer truck sensors, and in particular to a concrete mixer truck weighing tug wheel sensor device. Background Technology

[0002] Concrete mixer trucks typically have rotating wheels at the bottom of the concrete drum to support its rotation. Their weighing system needs to monitor load changes in real time via sensors mounted on pins inside the wheels. However, existing concrete mixer truck wheel sensor devices have the following significant drawbacks in practical applications:

[0003] Insufficient impact resistance:

[0004] During the operation of concrete mixer trucks, the trailer wheels must withstand dynamic loads such as road bumps and vibrations from the concrete mixing drum. Traditional sensors are directly plugged into the trailer wheel's pin shaft, lacking an effective buffer structure. When subjected to severe impacts, the sensors are prone to internal strain gauge breakage or circuit solder joint detachment due to rigid collisions, resulting in abnormal weighing data or even sensor failure.

[0005] Based on this, we propose a weighing tugboat sensor device for concrete trucks. Utility Model Content

[0006] To address the technical problem of insufficient impact resistance in existing sensors, this utility model provides a weighing tugboat sensor device for concrete trucks.

[0007] This utility model is achieved using the following technical solution: a weighing tow wheel sensor device for concrete trucks, comprising a mounting sleeve that extends through the interior of the tow wheel, with rotatable connecting brackets at both ends of the tow wheel, the end of the sensor located on the connecting bracket, a protective strip fixedly mounted on the surface of the mounting sleeve, a protective frame fixedly connected to the inner surface of the mounting sleeve, a sensor placed inside the mounting sleeve, a threaded fixing port fixedly mounted at the end of the mounting sleeve, a connecting plate fixedly mounted on the inner side of the threaded fixing port, and a wire through hole opened on the surface of the connecting plate through which the sensor's signal cable is led out.

[0008] As a further optimization of this utility model, the protective strips are evenly distributed around the circumference of the mounting sleeve, and the protective strips are made of rubber. The length of the protective strips is consistent with the axial length of the mounting sleeve, and the spacing between adjacent protective strips is equal.

[0009] As a further optimization of this utility model, when the tugboat encounters an impact, the protective strip will first contact the impact source and buffer the external impact force through its own elastic deformation, thereby reducing the direct force on the mounting sleeve and protecting the internal sensors.

[0010] As a further optimization of this utility model, the protective frame is in the shape of a circumferential plate, and multiple sets of the protective frame are provided and distributed along the axial direction of the mounting sleeve. The protective frame is made of rubber material and is used to abut against the outer peripheral surface of the sensor.

[0011] As a further optimization of this utility model, the protective frame is made of rubber, which elastically abuts against the outer peripheral surface of the sensor to form a radial buffer, absorbing the impact energy generated by the rotation of the tow wheel or road bumps, and avoiding rigid collision between the sensor and the inner wall of the mounting sleeve.

[0012] As a further optimization of this utility model, the surface of the threaded fixing port is provided with an external thread, and a protective cover is screwed onto the threaded fixing port. The protective cover, together with the threaded fixing port, prevents dust, rainwater, etc. from entering through the gap between the mounting sleeve and the towing wheel pin, thus ensuring a stable working environment for the sensor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model utilizes rubber protective strips evenly distributed circumferentially on the outer surface of the mounting sleeve to preferentially buffer external impact energy and reduce direct stress on the mounting sleeve; simultaneously, multiple sets of internal rubber protective frames abut against the outer circumference of the sensor along the axial direction, forming radial elastic buffer. This dual structure works synergistically to effectively reduce the impact of dynamic loads such as road bumps and cylinder vibrations on the sensor, preventing internal strain gauge breakage or circuit damage, and significantly improving the stability and service life of the sensor under complex working conditions.

[0015] 3. The threaded fixing port and the protective cover of this utility model form a sealing structure by tightening the threads. With the help of the sealing ring, it can prevent dust, rainwater and other pollutants from entering through the gap between the mounting sleeve and the towing wheel pin. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall installation structure in Embodiment 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure in Embodiment 1 of this utility model where the mounting sleeve is inserted into the inside of the tugboat;

[0018] Figure 3 This is a schematic diagram of the mounting sleeve connection structure in Embodiment 1 of this utility model;

[0019] Figure 4 This is a schematic diagram of the disassembly and assembly structure of the mounting sleeve in Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure in Embodiment 2 of this utility model.

[0021] Explanation of key symbols:

[0022] 1. Mounting sleeve; 2. Protective strip; 3. Protective frame; 4. Sensor; 5. Threaded fixing port; 6. Connecting plate; 7. Wiring hole; 8. Protective cover; 9. Drag wheel; 10. Bracket. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example 1

[0025] Please combine Figures 1-4 This embodiment proposes a weighing sensor device for a concrete mixer truck's tow wheel, including a mounting sleeve 1 that extends through the interior of a tow wheel 9. Supports 10 are rotatably connected to both ends of the tow wheel 9 and are mounted on the truck body. The tow wheel 9 supports the mixing drum. Protective strips 2 are fixedly mounted on the surface of the mounting sleeve 1, and are evenly distributed around the circumference of the mounting sleeve 1. The protective strips 2 are made of rubber. The length of the protective strips 2 is the same as the axial length of the mounting sleeve 1, and the spacing between adjacent protective strips 2 is equal.

[0026] In the specific technical solution, when the tugboat 9 is impacted, the protective strip 2 will contact the impact source first, and buffer the external impact force through its own elastic deformation, thereby reducing the direct force on the mounting sleeve 1 and protecting the internal sensor 4.

[0027] A protective frame 3 is fixedly connected to the inner surface of the mounting sleeve 1. A sensor 4 is placed inside the mounting sleeve 1, with the end of the sensor 4 located on the connecting bracket 10. The protective frame 3 is circumferentially plate-shaped, and multiple sets of the protective frame 3 are provided and distributed along the axial direction of the mounting sleeve 1. The protective frame 3 is made of rubber material and is used to abut against the outer circumferential surface of the sensor 4.

[0028] The protective frame 3 is made of rubber and forms a radial buffer by elastically abutting against the outer circumference of the sensor 4. This absorbs the impact energy generated by the rotation of the tow wheel 9 or road bumps, and prevents the sensor 4 from rigidly colliding with the inner wall of the mounting sleeve 1.

[0029] The end of the mounting sleeve 1 is fixedly installed with a threaded fixing port 5, and a connecting plate 6 is fixedly installed on the inner side of the threaded fixing port 5. A wire hole 7 is opened on the surface of the connecting plate 6, through which the signal cable of the sensor 4 is led out.

[0030] Example 2

[0031] Please see Figure 5 The difference between Embodiment 2 and Embodiment 1 is that Embodiment 1 uses a wired sensor with the signal line led out through the wire hole 7, while the sensor 4 in Embodiment 2 is a wireless sensor.

[0032] Specifically, the surface of the threaded fixing port 5 is provided with external threads, and a protective cover 8 is screwed onto the threaded fixing port 5. The protective cover 8 works together with the threaded fixing port 5 to prevent dust, rainwater, etc. from entering through the gap between the mounting sleeve 1 and the pin of the towing wheel 9, ensuring a stable working environment for the sensor 4.

[0033] The weighing trailer sensor device for concrete trucks of this utility model achieves impact resistance protection through the synergistic effect of multiple structures. The specific working principle is as follows:

[0034] Positioning and support of the mounting sleeve:

[0035] The mounting sleeve 1 is inserted through the pin inside the tow wheel 9, serving as the mounting carrier for the sensor 4. Multiple sets of circumferentially distributed protective frames 3 are arranged axially inside the sleeve, fixing the sensor 4 to the center of the mounting sleeve 1. The protective frames 3 are made of rubber and elastically abut against the outer circumference of the sensor 4, forming a radial buffer to absorb the impact energy generated by the rotation of the tow wheel 9 or road bumps, preventing the sensor 4 from rigidly colliding with the inner wall of the mounting sleeve 1.

[0036] External impact resistance of the protective strip:

[0037] Rubber protective strips 2 are evenly distributed circumferentially on the outer surface of the mounting sleeve 1. Their length is consistent with the axial direction of the mounting sleeve 1 and the spacing is equal. When the towing wheel 9 is impacted, the protective strips 2 first contact the impact source and buffer the external impact force through their own elastic deformation, reducing the direct force on the mounting sleeve 1 and thus protecting the internal sensor 4.

[0038] Cable connection:

[0039] A wire-passing hole 7 is opened on the connecting plate 6 inside the threaded fixing port 5, through which the signal cable of sensor 4 is led out.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A weighing tugboat sensor device for concrete mixer trucks, characterized in that, The device includes an installation sleeve (1), on the surface of which a protective strip (2) is fixedly installed, and a protective frame (3) is fixedly connected to the inner surface of which the installation sleeve (1). A sensor (4) is placed inside the installation sleeve (1), and a threaded fixing port (5) is fixedly installed at the end of the installation sleeve (1). A connecting plate (6) is fixedly installed on the inner side of the threaded fixing port (5), and a wire through hole (7) is opened on the surface of the connecting plate (6).

2. The concrete truck weighing tugboat sensor device as described in claim 1, characterized in that, The surface of the threaded fixing port (5) is provided with an external thread, and a protective cover (8) is screwed onto the threaded surface of the threaded fixing port (5). The mounting sleeve (1) passes through the interior of the towing wheel (9). The two ends of the towing wheel (9) are rotatably connected to the bracket (10), and the end of the sensor (4) is located on the connecting bracket (10).

3. The concrete truck weighing tugboat sensor device as described in claim 1, characterized in that, The protective strip (2) is evenly distributed around the circumference of the mounting sleeve (1), and the protective strip (2) is made of rubber.

4. The concrete mixer truck weighing tugboat sensor device as described in claim 1, characterized in that, The protective frame (3) is in the shape of a circumferential plate, and multiple sets of the protective frame (3) are provided and installed along the axial direction of the mounting sleeve (1).

5. The concrete truck weighing tugboat sensor device as described in claim 1, characterized in that, The protective frame (3) is made of rubber material and is used to abut against the outer peripheral surface of the sensor (4).

6. The concrete truck weighing tugboat sensor device as described in claim 1, characterized in that, The length of the protective strip (2) is consistent with the axial length of the mounting sleeve (1), and the spacing between adjacent protective strips (2) is equal.

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