Automatic adjusting device for towing belt of refueling vehicle

Abstract

The invention relates to the technical field of length adjustment of a refueling truck towing belt, in particular to an automatic adjusting device for the refueling truck towing belt, which comprises a mounting assembly, a first roller, a second roller and a rotary driving assembly, the axes of the first roller and the second roller are parallel to each other, and the first roller and the second roller are rotationally connected with the mounting assembly respectively; a clamping cavity for the mopping belt to pass through is formed between the first roller and the second roller; and the rotary driving assembly is arranged on the mounting assembly. By means of the device, the defect that in the prior art, when a refueling truck chassis ascends, the ground touching length of a ground dragging belt is possibly insufficient, and even the ground dragging belt is disengaged from the ground is overcome; the rotary driving assembly, the first rolling wheel and the second rolling wheel are arranged, and the ground dragging belt is clamped between the first rolling wheel and the second rolling wheel during use; the rotary driving assembly is used for driving the first roller or the second roller to rotate to drive the mopping belt to move, so that the ground contact length of the mopping belt is adjusted, and safety accidents caused by insufficient ground contact length and even separation from the ground of the mopping belt can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of length adjustment of a towing zone of a refueling truck, and more particularly to an automatic adjustment device for the towing zone of a refueling truck. Background Art

[0002] When a refueling truck is driving, the gasoline in the tank is constantly rubbing against the inner wall of the tank, causing the gasoline and the tank to carry equal amounts of opposite charges. Since the tires of the refueling truck are insulators, these charges will not be transmitted to the ground, but will gradually increase. When they increase to a certain amount, electric sparks will be generated, which can easily cause fires and explosions. Therefore, there is a tow belt connected to the tail of the refueling truck. The function of the tow belt is to conduct the static electricity of the refueling truck to the ground to prevent the generation of static sparks.

[0003] Before refueling, the tanker truck is full, in which case the chassis of the vehicle is low, and the mopping belt has sufficient contact length with the ground. After refueling, the tanker truck will rise to a certain height due to the significant reduction of oil in the tank, and the mopping belt fixed on the chassis will also rise, causing the mopping belt to be insufficiently contacted with the ground or even detached from the ground, resulting in the inability to release the static electricity generated by the tanker in time, and there is a risk of static electricity accumulation causing the tanker to catch fire. Summary of the invention

[0004] In view of the problem in the above-mentioned prior art that the tow belt may not be long enough to touch the ground or even come off the ground when the chassis of the refueling truck rises, the present invention provides an automatic adjustment device for the tow belt of a refueling truck, which can adjust the contact length between the tow belt and the ground to avoid safety accidents caused by the tow belt not being long enough to touch the ground or even coming off the ground.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] A device for automatically adjusting the towing zone of a refueling truck comprises a mounting assembly, a first roller, a second roller and a rotary drive assembly, wherein the axes of the first roller and the second roller are parallel to each other and are respectively rotatably connected to the mounting assembly, and a clamping cavity for allowing the towing zone to pass therethrough is formed between the first roller and the second roller; and the rotary drive assembly is arranged on the mounting assembly and is used to drive the first roller or the second roller to rotate.

[0007] When the above technical solution is in use, the mounting assembly is installed on the chassis of the refueling truck, one end of the mopping belt is connected to the chassis of the refueling truck, and the other end contacts the ground after passing through the clamping cavity; in the process of the refueling truck refueling the external equipment, the chassis of the refueling truck will gradually rise, at this time, the rotary drive assembly can be started to drive the first roller or the second roller to rotate, and the first roller or the second roller will apply friction to the mopping belt while rotating, so that the mopping belt extends more length, thereby avoiding the mopping belt from being insufficiently in contact with the ground or even detaching from the ground. After the oil tank of the refueling truck is filled with oil, the chassis of the refueling truck will drop again, at this time, the rotary drive assembly can be started to drive the first roller or the second roller to rotate in the opposite direction, so that the mopping belt retracts a part of its length, thereby avoiding the mopping belt from being in contact with the ground too long, affecting the static electricity conduction efficiency, and causing the mopping belt to be entangled on obstacles.

[0008] Preferably, the mounting assembly is provided with a first through cavity for the mopping belt to pass through, a receiving cavity for receiving the mopping belt, and a second through cavity for the mopping belt to pass through, and the first through cavity is connected to the second through cavity through the receiving cavity. After one end of the mopping belt is connected to the chassis of the refueling truck, the other end first enters the receiving cavity through the first through cavity, then passes through the second through cavity, and finally passes through the clamping cavity. The receiving cavity can accommodate a portion of the length of the mopping belt, which can reduce the contamination of the mopping belt by external dust or corrosive substances, and is conducive to extending the service life of the mopping belt. Moreover, accommodating part of the mopping belt in the receiving cavity can reduce the swinging of the mopping belt during the driving of the vehicle, which is conducive to improving the driving safety.

[0009] Preferably, the installation assembly includes a box body and a door cover, the door cover is detachably connected or rotatably connected to the box body, the first through cavity is arranged on the door cover, the second through cavity is arranged on the box body, and the door cover and the box body form the accommodating cavity. The accommodating cavity can be exposed by opening the door cover, which is convenient for the staff to arrange the mop belt in the accommodating cavity and prevent the mop belt from being entangled and knotted in the accommodating cavity, thereby affecting the adjustment of its extended length.

[0010] The detachable connection between the door cover and the box body may be a snap connection, a threaded connection, an adhesive connection, or a connection using a detachable connector. The rotational connection between the door cover and the box body may be a rotational connection between one side edge of the door cover and one side edge of the box body, or a rotational connection between the middle of both side edges of the door cover and the middle of both sides of the box body.

[0011] Preferably, one side edge of the door cover is rotatably connected to one side edge of the box body, a matching structure is provided on the box cover, a lock assembly is provided on the box body, and the lock assembly is snap-connected to the matching structure. When the door cover needs to be opened, the connection between the lock assembly and the matching structure is released to open the door cover. It is understandable that the rotatable connection between the door cover and the box body can keep the door cover connected to the box body, which is conducive to simplifying the opening and closing steps of the door cover compared to the detachable connection between the door cover and the box body. One side edge of the door cover is rotatably connected to one side edge of the box body, so that the accommodating chamber can be fully exposed when the door cover is opened, which can avoid interference from the door cover when the staff is tidying up the mopping belt in the accommodating chamber, which is conducive to improving the tidying efficiency of the mopping belt.

[0012] Preferably, the first through cavity is arranged at an end opposite to the rotating end of the door cover, so as to avoid the door cover being pulled by the mop belt during opening and closing, which is beneficial to improving the opening and closing efficiency of the door cover, and also avoid the door cover and the mop belt from being pulled against each other and causing damage to both.

[0013] Preferably, the second through cavity is located on a side of the mounting assembly opposite to the first through cavity, and the first roller and the second roller are both located on the exit side of the second through cavity on the mounting assembly. This arrangement can reduce the swing and distortion of the mopping belt during movement, making the movement of the mopping belt more stable and reducing the risk of the mopping belt being stuck.

[0014] Preferably, a slope is provided in the accommodating cavity, and the slope extends from the side where the second through cavity is located to the bottom of the accommodating cavity. The slope can support and guide the mopping belt to prevent the mopping belt from flowing back out of the clamping cavity due to its own gravity, and can further reduce the distortion of the mopping belt during movement.

[0015] Preferably, an extension portion is provided on one side of the box body, and a plurality of threaded through holes are provided on the extension portion. Providing the extension portion and the plurality of threaded through holes facilitates the installation of the box body on the chassis of the tanker truck.

[0016] Preferably, the outer circumferential surfaces of the first roller and the second roller are each provided with a plurality of anti-skid protrusions. The anti-skid protrusions can increase the surface roughness of the first roller and the second roller, thereby increasing the friction between the first roller and the second roller and the mopping belt, preventing the mopping belt from slipping between the first roller and the second roller, and ensuring that the mopping belt can be pulled smoothly and efficiently.

[0017] Preferably, the rotary drive assembly includes a motor disposed on the mounting assembly, and the output shaft of the motor is coaxially fixedly connected to the first roller or the second roller. The structure of the motor is relatively compact and simple, and the maintenance cost is also lower. Moreover, the motor can achieve precise torque control, which is conducive to accurately controlling the extension and retraction length of the mopping belt.

[0018] Beneficial effects of the present invention:

[0019] 1. A rotary drive assembly, a first roller and a second roller are provided. When in use, the mopping belt is clamped between the first roller and the second roller. The rotary drive assembly is used to drive the first roller or the second roller to rotate to drive the mopping belt to move, thereby adjusting the length of the mopping belt touching the ground, thereby avoiding safety accidents caused by insufficient length of the mopping belt touching the ground or even detaching from the ground.

[0020] 2. Providing a receiving cavity for storing a portion of the mop belt can reduce the contamination of the mop belt by external dust or corrosive substances, which is beneficial to extending the service life of the mop belt, and can reduce the swing of the mop belt during the driving of the vehicle, which is beneficial to improving driving safety.

[0021] 3. The installation assembly includes a box body and a door cover, and the door cover can be opened or closed at any time, which is convenient for tidying up the mop belt in the accommodating chamber and preventing the mop belt from getting tangled and knotted in the accommodating chamber and affecting the adjustment of its extended length.

[0022] 4. An inclined surface is arranged in the accommodating cavity to prevent the mop belt from flowing back and leaving the clamping cavity due to its own gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an automatic adjustment device for the towing zone of a refueling truck from one viewing angle;

[0024] Figure 2 It is a schematic diagram of the structure of the automatic adjustment device for the towing zone of a refueling truck after the door cover is closed;

[0025] Figure 3 It is a schematic diagram of the structure of the automatic adjustment device for the towing zone of a refueling truck after the door cover is removed;

[0026] Figure 4 It is a schematic diagram of the structure of the automatic adjustment device for the towing zone of a refueling truck from another perspective;

[0027] Figure 5 It is a connection diagram of the locking assembly and the matching structure.

[0028] In the accompanying drawings: 1-installation assembly; 101-box body; 1011-extension portion; 1012-threaded through hole; 102-door cover; 103-first through cavity; 104-accommodating cavity; 105-second through cavity; 106-inclined surface; 2-first roller; 201-clamping cavity; 3-second roller; 4-rotational drive assembly; 5-locking assembly; 6-matching structure. DETAILED DESCRIPTION

[0029] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0032] Example 1

[0033] This embodiment is a first embodiment of an automatic adjustment device for the drag zone of a refueling truck. Figure 1 As shown, it includes a mounting assembly 1, a first roller 2, a second roller 3 and a rotation drive assembly 4. The axes of the first roller 2 and the second roller 3 are parallel to each other and are rotationally connected to the mounting assembly 1 respectively. A clamping cavity 201 for the mopping belt to pass through is formed between the first roller 2 and the second roller 3; the rotation drive assembly 4 is arranged on the mounting assembly 1 to drive the first roller 2 to rotate.

[0034] Specifically, the rotary drive assembly 4 includes a motor disposed on the mounting assembly 1, and the output shaft of the motor is coaxially fixedly connected to the first roller 2. The structure of the motor is relatively compact and simple, and the maintenance cost is also lower. Moreover, the motor can achieve precise torque control, which is conducive to accurately controlling the extension and retraction length of the mopping belt.

[0035] The working principle or workflow of this embodiment: When the above technical solution is in use, the installation component 1 is installed on the chassis of the refueling truck, one end of the mopping belt is connected to the chassis of the refueling truck, and the other end contacts the ground after passing through the clamping cavity 201; in the process of the refueling truck refueling the external equipment, the chassis of the refueling truck will gradually rise, and at this time, the rotating drive component 4 can be started to drive the first roller 2 or the second roller 3 to rotate, and the first roller 2 or the second roller 3 will apply friction to the mopping belt while rotating, so that the mopping belt extends more length, thereby avoiding the mopping belt from being insufficiently in contact with the ground or even detaching from the ground. After the oil tank of the refueling truck is filled with oil, the chassis of the refueling truck will drop again, and at this time, the rotating drive component 4 can be started to drive the first roller 2 or the second roller 3 to rotate in the opposite direction, so that the mopping belt retracts a part of its length, thereby avoiding the mopping belt from being in contact with the ground too long, affecting the static electricity conduction efficiency, and causing the mopping belt to be entangled on obstacles.

[0036] The beneficial effects of this embodiment are as follows: a rotary drive assembly, a first roller and a second roller are provided, and when in use, the mopping belt is clamped between the first roller and the second roller, and the rotary drive assembly is used to drive the first roller or the second roller to rotate to drive the mopping belt to move, thereby adjusting the length of the mopping belt touching the ground, thereby avoiding safety accidents caused by insufficient length of the mopping belt touching the ground or even detaching from the ground.

[0037] Example 2

[0038] This embodiment is a second embodiment of an automatic adjustment device for the drag zone of a refueling truck. This embodiment is similar to the first embodiment, except that the second embodiment is combined with Figures 2 to 5 As shown, the mounting assembly 1 is provided with a first through cavity 103 for the mopping belt to pass through, a receiving cavity 104 for receiving the mopping belt, and a second through cavity 105 for the mopping belt to pass through, and the first through cavity 103 is connected to the second through cavity 105 through the receiving cavity 104. After one end of the mopping belt is connected to the chassis of the refueling truck, the other end first enters the receiving cavity 104 through the first through cavity 103, then passes through the second through cavity 105, and finally passes through the clamping cavity 201. The receiving cavity 104 can accommodate a portion of the length of the mopping belt, which can reduce the contamination of the mopping belt by external dust or corrosive substances, which is conducive to extending the service life of the mopping belt. Moreover, accommodating part of the mopping belt in the receiving cavity 104 can reduce the swing of the mopping belt during the driving of the vehicle, which is conducive to improving the driving safety.

[0039] Specifically, the installation assembly 1 includes a box body 101 and a door cover 102, a first through cavity 103 is provided on the door cover 102, a second through cavity 105 is provided on the box body 101, and a receiving cavity 104 is formed between the door cover 102 and the box body 101. The receiving cavity 104 can be exposed by opening the door cover 102, so that the staff can arrange the mop belt in the receiving cavity 104 conveniently, and avoid the mop belt from being entangled and knotted in the receiving cavity 104, thereby affecting the adjustment of its extended length.

[0040] Specifically, one side edge of the door cover 102 is rotatably connected to one side edge of the box body 101, a matching structure 6 is provided on the box cover, and a lock assembly 5 is provided on the box body 101, and the lock assembly 5 is snap-connected with the matching structure 6. The lock assembly 5 and the matching structure 6 are both prior art, and this specification does not describe them in detail. When it is necessary to open the door cover 102, the connection between the lock assembly 5 and the matching structure 6 is released, and the door cover 102 can be opened. It can be understood that the rotational connection between the door cover 102 and the box body 101 can keep the door cover 102 connected to the box body 101, which is conducive to simplifying the opening and closing steps of the door cover 102 compared to the detachable connection between the door cover 102 and the box body 101. One side edge of the door cover 102 is rotatably connected to one side edge of the box body 101, so that when the door cover 102 is opened, the accommodating chamber 104 can be fully exposed, which can avoid the interference of the door cover 102 when the staff is tidying up the mopping belt in the accommodating chamber 104, which is conducive to improving the tidying efficiency of the mopping belt.

[0041] Furthermore, the first through cavity 103 is disposed at an end opposite to the rotating end of the door cover 102. This can prevent the door cover 102 from being pulled by the mop belt during opening and closing, which is beneficial to improving the opening and closing efficiency of the door cover 102, and can also prevent the door cover 102 and the mop belt from being pulled against each other and causing damage to both.

[0042] Furthermore, the second through cavity 105 is located on a side of the mounting assembly 1 opposite to the first through cavity 103, and the first roller 2 and the second roller 3 are both located on the outlet side of the second through cavity 105 of the mounting assembly 1. This arrangement can reduce the swing and distortion of the mopping belt during movement, making the movement of the mopping belt more stable and reducing the risk of the mopping belt being stuck during movement.

[0043] The other features, working principles and beneficial effects of this embodiment are consistent with those of Embodiment 1.

[0044] Example 3

[0045] This embodiment is a third embodiment of an automatic adjustment device for the drag zone of a refueling truck. This embodiment is similar to the second embodiment, except that: Figure 3 As shown, an inclined surface 106 is provided in the accommodating cavity 104, and the inclined surface 106 extends from the side where the second through cavity 105 is located to the bottom of the accommodating cavity 104. The inclined surface 106 can support and guide the mopping belt to prevent the mopping belt from flowing back to the clamping cavity 201 due to its own gravity, and can further reduce the distortion of the mopping belt during movement.

[0046] Further, both ends of the top side of the box body 101 are provided with extensions 1011, which protrude from the left and right sides of the box body 101 respectively, and each of the extensions 1011 is provided with four threaded through holes 1012. The extensions 1011 and the plurality of threaded through holes 1012 facilitate the installation of the box body 101 on the chassis of the tanker truck.

[0047] Furthermore, a plurality of anti-skid protrusions (not shown in the figure) are provided on the outer circumferential surfaces of the first roller 2 and the second roller 3. The anti-skid protrusions can increase the surface roughness of the first roller 2 and the second roller 3, thereby increasing the friction between the first roller 2 and the second roller 3 and the mopping belt, preventing the mopping belt from slipping between the first roller 2 and the second roller 3, and ensuring that the mopping belt can be pulled smoothly and efficiently.

[0048] The other features, working principles and beneficial effects of this embodiment are consistent with those of Embodiment 2.

[0049] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description, and it is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An automatic adjustment device for the towing zone of a refueling truck, characterized in that: The invention comprises a mounting assembly (1), a first roller (2), a second roller (3) and a rotation drive assembly (4); the axes of the first roller (2) and the second roller (3) are parallel to each other and are respectively rotationally connected to the mounting assembly (1); a clamping cavity (201) for passing a mopping belt is formed between the first roller (2) and the second roller (3); and the rotation drive assembly (4) is arranged on the mounting assembly (1) and is used to drive the first roller (2) or the second roller (3) to rotate.

2. The automatic adjustment device for the towing zone of a refueling truck according to claim 1, characterized in that: The mounting assembly (1) is provided with a first through cavity (103) for the mopping belt to pass through, a receiving cavity (104) for receiving the mopping belt, and a second through cavity (105) for the mopping belt to pass through, wherein the first through cavity (103) is connected to the second through cavity (105) via the receiving cavity (104).

3. The automatic adjustment device for the towing area of ​​a refueling truck according to claim 2, characterized in that: The installation assembly (1) comprises a box body (101) and a door cover (102); the door cover (102) is detachably connected or rotatably connected to the box body (101); the first through cavity (103) is arranged on the door cover (102); the second through cavity (105) is arranged on the box body (101); and the accommodating cavity (104) is enclosed between the door cover (102) and the box body (101).

4. The automatic adjustment device for the towing zone of a refueling truck according to claim 3, characterized in that: One side edge of the door cover (102) is rotatably connected to one side edge of the box body (101); a matching structure (6) is provided on the box cover; a locking assembly (5) is provided on the box body (101); and the locking assembly (5) is snap-connected to the matching structure (6).

5. The automatic adjustment device for the towing zone of a refueling truck according to claim 4, characterized in that: The first through cavity (103) is arranged at an end opposite to the rotating end of the door cover (102).

6. The automatic adjustment device for the towing zone of a refueling truck according to claim 2, characterized in that: The second through cavity (105) is located on a side of the mounting assembly (1) opposite to the first through cavity (103), and the first roller (2) and the second roller (3) are both located on an outlet side of the second through cavity (105) on the mounting assembly (1).

7. The automatic adjustment device for the towing zone of a refueling truck according to claim 2, characterized in that: An inclined surface (106) is provided in the accommodating cavity (104), and the inclined surface (106) extends from a side where the second through cavity (105) is located toward the bottom of the accommodating cavity (104).

8. The automatic adjustment device for the towing zone of a refueling truck according to claim 2, characterized in that: An extension portion (1011) is provided on one side of the box body (101), and a plurality of threaded through holes (1012) are provided on the extension portion (1011).

9. The automatic adjustment device for the towing zone of a refueling truck according to claim 1, characterized in that: A plurality of anti-slip protrusions are provided on the outer circumferential surfaces of the first roller (2) and the second roller (3).

10. The automatic adjustment device for the towing zone of a refueling truck according to any one of claims 1 to 9, characterized in that: The rotary drive assembly (4) comprises a motor arranged on the mounting assembly (1), and the output shaft of the motor is coaxially fixedly connected to the first roller (2) or the second roller (3).

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