Hook arm connecting chassis, snow-melting agent spreader and hook arm transport vehicle

Abstract

The utility model discloses a hook arm connecting chassis, a snow-melting agent spreader and a hook arm transport vehicle, and the hook arm connecting chassis comprises a bottom plate used for installing operation equipment; the vertical plate is fixedly connected to the front end of the bottom plate, the top of the vertical plate is fixedly connected with a hook, the hook is used for being connected with a hook arm of a hook arm transport vehicle in a hanging mode, when the hook arm of the hook arm transport vehicle swings towards the front of the vehicle, the hook arm pulls the hook arm connecting chassis to move forwards and ascend to the hook arm transport vehicle, and when the hook arm of the hook arm transport vehicle swings towards the rear of the vehicle, the hook arm is pulled to move forwards and ascend to the hook arm transport vehicle. And the hook arm pushes the hook arm connecting chassis to retreat and descend to the ground. Operation equipment can be installed on the hook arm connecting chassis, the hook arm of the hook arm transport vehicle is used for hooking the hook arm connecting chassis, the hook arm connecting chassis is driven by swinging of the hook arm to advance and ascend to the vehicle hopper or retreat and descend to the ground, the operation equipment can be conveniently and rapidly disassembled and assembled, and the construction cost of hoisting equipment is also saved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle-mounted equipment technology, specifically, it relates to a hook-arm connecting chassis, a snow-melting agent spreader, and a hook-arm transport vehicle. Background Technology

[0002] As a winter emergency device, de-icing agent spreaders are typically installed on vehicles with cargo beds. As the vehicle moves forward, the spreader sprays de-icing agent at the rear. The agent combines with the snow on the ground, lowering its freezing point and forming a brine solution that effectively melts the snow and prevents it from freezing.

[0003] As a complete equipment assembly, the de-icing agent spreader is only installed on vehicles before snowfall and is then removed and stored separately after the snow season. Due to its large size, installation and disassembly are quite inconvenient and usually require the assistance of hoisting equipment. After hoisting the spreader onto the vehicle, it needs to be secured. Currently, the main securing methods include bolted connections, welded bracket connections, and tensioner connections, all of which also have certain inconveniences. Utility Model Content

[0004] This application addresses the inconvenience of using lifting equipment for the installation and disassembly of frequently disassembled vehicle-mounted work equipment. It provides a hook-arm connecting chassis, a de-icing agent spreader, and a hook-arm transport vehicle. The work equipment can be installed on the hook-arm connecting chassis, and the hook arm of the hook-arm transport vehicle can be used to hook the hook-arm connecting chassis, thereby facilitating the convenient and quick installation and disassembly of the work equipment and saving on the construction costs of lifting equipment.

[0005] The technical solution adopted is as follows:

[0006] A hook arm connecting a chassis, comprising:

[0007] Base plate, used for mounting operating equipment;

[0008] An upright plate is fixedly connected to the front end of the base plate. A hook is fixedly connected to the top of the upright plate. The hook is used to engage with the hook arm of the hook arm transport vehicle. When the hook arm of the hook arm transport vehicle swings forward, the hook arm pulls the hook arm connecting chassis forward and up onto the hook arm transport vehicle. When the hook arm of the hook arm transport vehicle swings backward, the hook arm pushes the hook arm connecting chassis backward and down to the ground.

[0009] By mounting the work equipment on the hook-lift chassis, and using the hook arm of the hook-lift transport vehicle to drive the hook-lift chassis forward and upward or backward and downward, the work equipment can be easily mounted on the hook-lift transport vehicle, reducing the operating cost of the lifting equipment and improving the installation efficiency.

[0010] Furthermore, after the hook arm connecting chassis is moved onto the hook arm transport vehicle, the steps for securing the equipment are reduced because the hook arm is still hooked onto the hook arm connecting chassis. Alternatively, it is also possible that after the hook arm connecting chassis is moved onto the hook arm transport vehicle, it can be further secured using other methods such as bolt connections or binding.

[0011] Optionally, a roller is also provided at the bottom rear end of the base plate.

[0012] By installing rollers at the rear bottom of the base plate, the rear end of the hook arm connecting chassis experiences rolling friction with the ground during the movement of the hook arm driving the hook arm connecting chassis. This reduces wear on the hook arm connecting chassis and also reduces frictional resistance between the hook arm connecting chassis and the ground, thereby increasing its moving speed.

[0013] Optionally, the base plate is a frame structure.

[0014] The base plate is formed by welding multiple steel sections, resulting in a lightweight structure with strong load-bearing capacity.

[0015] Optionally, inclined bars are also provided on both sides of the base plate in the width direction.

[0016] By installing slanted stops on both sides of the working equipment, the left and right swaying of the hook arm connecting chassis during forward ascent or backward descent can be reduced, preventing damage to the equipment and also preventing the hook arm connecting chassis from rubbing against other mechanisms during movement.

[0017] Another aspect of this application provides a de-icing agent spreader, including the hook-arm connecting chassis as described above, wherein the de-icing agent spreader is mounted on the hook-arm connecting chassis as an operating device.

[0018] The de-icing agent spreader is mounted on a hooklift chassis. The hooklift of the hooklift transport vehicle pulls the chassis forward and upward onto the vehicle, thus mounting the de-icing agent spreader. The spreader can apply the de-icing agent while the transport vehicle is in motion. After operation, the hooklift can be used to push the chassis backward and lower it to the ground. The de-icing agent spreader does not need to be disassembled and can be stored together with the chassis.

[0019] In another aspect, this application provides a hook-lift transport vehicle, including the hook-lift connecting chassis as described above.

[0020] The hook-arm connecting chassis is used in conjunction with the hook-arm transport vehicle, which makes it easy to install the working equipment. Each working equipment can be matched with a hook-arm connecting chassis. When in use, the working equipment is quickly installed on the hook-arm transport vehicle by using the hook arm, and the operation can be carried out while the hook-arm transport vehicle is in motion.

[0021] Optionally, the hook arm and a first hydraulic cylinder are installed on the truck bed of the hook arm transport vehicle. The hook arm consists of a first section and a second section arranged at right angles. The first section is hinged to the truck bed of the transport vehicle, and the second section has a hook at its end. One end of the first hydraulic cylinder is hinged to the truck bed, and the other end is hinged to the first section of the hook arm.

[0022] By setting the hook arm to a first segment and a second segment, and using the first hydraulic cylinder to drive the hook arm to swing back and forth, the forward lifting and backward lowering movement of the hook arm connected to the chassis can be achieved.

[0023] Optionally, a second hydraulic cylinder is installed at the end of the first segment, and the second segment is mounted on the piston rod of the second hydraulic cylinder.

[0024] After the hook arm connecting chassis is driven forward and raised onto the hook arm transport vehicle by the first hydraulic cylinder, the second hydraulic cylinder extends to drive the second section to move. Since the end of the second section has a hook that engages with the hook arm connecting chassis, the hook arm connecting chassis also moves after engaging, allowing the hook arm connecting chassis to move further forward. After the operation is completed, the hook arm connecting chassis can be moved backward by retracting the second hydraulic cylinder, and then the hook arm connecting chassis can be lowered back to the ground by the first hydraulic cylinder.

[0025] Optionally, the rear end of the hooklift truck's cargo bed is also equipped with auxiliary rollers.

[0026] During the forward ascent and backward descent of the hook arm connecting chassis, the bottom of the hook arm connecting chassis slides on the auxiliary rollers. The passive rotation of the auxiliary rollers reduces the friction between the hook arm connecting chassis and the hook arm transport vehicle.

[0027] Optionally, the hook of the hook arm includes a first hook body and a second hook body, which extend from both sides of the second segment along its length direction, and the first hook body extends beyond the second hook body and then bends inward. The first hook body is used to pull the hook arm connecting chassis forward, and the second hook body is used to push the hook arm connecting chassis backward.

[0028] By using the different shapes of the first and second hooks of the hook arm, it is possible to facilitate the hooking of the hook to the hook arm connecting chassis, and the first hook can be used to pull the hook arm connecting chassis forward, while the second hook can be used to push the hook arm connecting chassis backward.

[0029] The hook-lift connection between the chassis, the de-icing agent spreader, and the hook-lift transport vehicle in this application has the following beneficial effects:

[0030] (1) The working equipment can be installed on the hook arm connecting chassis. The hook arm of the hook arm transport vehicle is used to hook the hook arm connecting chassis. The swing of the hook arm is used to drive the hook arm connecting chassis to move forward and rise to the truck bed or move backward and lower to the ground. This allows for convenient and quick assembly and disassembly of the working equipment and also saves on the construction cost of hoisting equipment. Moreover, after the hook arm connecting chassis is moved to the hook arm transport vehicle, the steps of fixing the working equipment are reduced because the hook arm is still hooked to the hook arm connecting chassis.

[0031] (2) By installing rollers at the bottom rear end of the base plate, the rear end of the hook arm connecting chassis experiences rolling friction with the ground during the movement of the hook arm driving the hook arm connecting chassis, which reduces wear on the hook arm connecting chassis. Furthermore, it also reduces the frictional resistance between the hook arm connecting chassis and the ground, increasing its moving speed.

[0032] (3) By setting the inclined baffles on both sides of the working equipment, the left and right swaying of the hook arm connecting chassis during the forward and upward or backward and downward process can be reduced, thus preventing damage to the equipment and preventing the hook arm connecting chassis from rubbing against other mechanisms during the movement.

[0033] (4) Install the de-icing agent spreader on the hook-lift connecting chassis. Use the hook arm of the hook-lift transport vehicle to pull the hook-lift connecting chassis forward and upward onto the hook-lift transport vehicle, thus installing the de-icing agent spreader on the hook-lift transport vehicle. The de-icing agent spreader can spread de-icing agent while the hook-lift transport vehicle is in motion. After the operation is completed, the hook arm can be used to push the hook-lift connecting chassis backward and lower it to the ground. The de-icing agent spreader does not need to be disassembled and can be stored together with the hook-lift connecting chassis.

[0034] (5) After the hook arm connecting chassis is driven forward and raised onto the hook arm transport vehicle by the first hydraulic cylinder, the second hydraulic cylinder extends to drive the second stage of movement, which can further move the hook arm connecting chassis forward. After the operation is completed, the hook arm connecting chassis is moved backward by retracting the second hydraulic cylinder, and then the hook arm connecting chassis is driven backward and lowered to the ground by the first hydraulic cylinder.

[0035] (6) During the forward and backward movement of the hook arm connecting chassis, the bottom of the hook arm connecting chassis slides on the auxiliary roller. The passive rotation of the auxiliary roller can reduce the friction between the hook arm connecting chassis and the hook arm transport vehicle.

[0036] (7) By setting the different shapes of the first hook and the second hook of the hook arm, it is possible to facilitate the hooking of the hook and the hook arm connecting chassis, and the first hook can be used to pull the hook arm connecting chassis forward, and the second hook can be used to push the hook arm connecting chassis backward. Attached Figure Description

[0037] The above-described features and technical advantages of this utility model will become clearer and easier to understand by referring to the following description of its embodiments in conjunction with the accompanying drawings.

[0038] Figure 1 This is a front view of the hook arm connecting chassis according to an embodiment of this application.

[0039] Figure 2 This is a top view of the hook arm connecting chassis according to an embodiment of this application.

[0040] Figure 3 This is a schematic diagram of a hooklift truck.

[0041] Figure 4 This is a schematic diagram of the hook arm lowering according to an embodiment of this application.

[0042] Figure 5 This is a schematic diagram of the hook arm and hook being attached according to an embodiment of this application.

[0043] Figure 6 This is a schematic diagram of the hook arm according to an embodiment of this application.

[0044] Reference numerals: 1. Base plate; 2. Vertical plate; 3. Mounting hole; 4. Roller; 5. Working equipment; 6. Inclined bar; 7. Hook; 8. Hook arm; 8a. First hook body; 8b. Second hook body; 8c. First section; 8d. Second section; 8e. Second hydraulic cylinder; 9. Auxiliary roller; 10. Detailed Implementation

[0045] The embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in this specification, the drawings are not drawn to scale, and the same reference numerals denote the same parts.

[0046] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the components can rotate relative to each other after connection. The directional terms mentioned in the embodiments of this application, such as "forward," "backward," "front," and "rear," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] The hook-arm connecting chassis of this embodiment is used to install various operating equipment, such as a de-icing agent spreader, and connects to the hook arm of the hook-arm transport vehicle. Using the hook arm of the hook-arm transport vehicle, the operating equipment mounted on the hook-arm connecting chassis can be moved onto the hook-arm transport vehicle. The operating equipment completes the work task while the hook-arm transport vehicle is moving. If a de-icing agent spreader is installed, then the de-icing agent is spread while the hook-arm transport vehicle is moving. Of course, this application does not limit the type of equipment installed; for example, it could also be a water spraying device, which sprays water while the hook-arm transport vehicle is moving.

[0048] Please refer to Figures 1 to 2 The hook arm connecting chassis of this embodiment includes a base plate 1 for supporting and fixing the working equipment; and a vertical plate 2 for connecting with the hook arm of the hook arm transport vehicle, so that the hook arm can pull the hook arm connecting chassis and move it onto the hook arm transport vehicle, or the hook arm connecting chassis can be lowered to the ground while the hook arm is pulling the hook arm connecting chassis.

[0049] The base plate 1 can be a frame structure, for example, it can be welded from structural steel. The base plate 1 can have a connection structure for connecting to the working equipment, for example, multiple connecting plates can be fixedly connected to the bottom of the working equipment along its width direction, and multiple connecting plates can also be fixedly connected to the top of the base plate 1 along its width direction. Mounting holes are correspondingly provided on the connecting plates of the working equipment and the connecting plates of the base plate 1, and the working equipment is mounted on the base plate 1 by bolts passing through the mounting holes.

[0050] For example, such as Figure 2 In this design, the base plate 1 uses two I-beams as the main beams, with multiple channel steels welded between them. Both ends of the channel steels extend beyond the I-beams, and mounting holes 3 are machined at their protruding ends. Correspondingly, multiple connecting plates are also fixedly connected along the width of the bottom of the working equipment 5. These plates can also be made of channel steel, square steel, or other profiles, and mounting holes are machined at both ends of their width. The working equipment is placed on the base plate 1 and installed on it using bolts passing through the mounting holes 3.

[0051] The upright plate 2 is fixedly connected to the front end of the base plate 1. The top end of the upright plate 2 is used for the hook arm to hook onto. It should be noted that the hook arm should be hooked onto the top end of the upright plate 2 with the hook opening facing upwards. For example, a hook 7 is also fixedly connected to the top end of the upright plate 2. The hook 7 has a shape that gradually tapers upwards from the connection point with the top end of the upright plate 2, so that the top end of the hook 7 has a cross-sectional profile that is approximately equal to that of the hook arm, thereby reducing the swaying of the hook arm when it is hooked on the hook 7.

[0052] In addition, this application is not limited to using hooks and hook arms for connection. Other fixing methods can be used to further strengthen the connection, such as binding with cable ties, ropes, etc.

[0053] In some embodiments, inclined baffles 6 are provided on both sides of the base plate 1 in the width direction. One end of the inclined baffle 6 is fixedly connected to the base plate 1, and the other end is fixedly connected to the upright plate 2. When installing the working equipment, the front end of the working equipment is placed between the inclined baffles 6 on both sides, which can reduce the left and right swaying of the working equipment.

[0054] In some embodiments, a roller 4 is also provided at the rear bottom of the base plate 1. When the hook arm hooks onto the hook 7 of the upright plate 2, the piston rod of the first cylinder 9 of the hook arm transport vehicle retracts, causing the hook arm 8 to swing forward, thereby moving the hook arm connecting chassis hanging on the hook forward and upward. The roller 4 supports the ground, preventing the hook arm connecting chassis from rubbing against the ground. As the first cylinder 9 gradually retracts, the hook arm connecting chassis gradually moves onto the truck bed. When the first cylinder 9 retracts to its limit position, the hook arm connecting chassis moves onto the truck bed. When the hook arm swings backward, it pushes the hook arm connecting chassis backward and down to the ground, with the roller 4 also providing good support.

[0055] The following is combined with Figures 3 to 5 Please refer to the following explanation of the structure of the hooklift truck. Figure 3 A hooklift truck typically has a hook arm 8 and a first hydraulic cylinder 9 mounted on its cargo bed. The hook arm 8 is bent and consists of a first segment 8c and a second segment 8d, which are set at a certain angle, such as a right angle. The first segment 8c of the hook arm 8 is hinged to the cargo bed of the truck, and the end of the second segment 8d has a hook. One end of the first hydraulic cylinder 9 is hinged to the cargo bed of the truck, and the other end is hinged to the first segment 8c of the hook arm 8. When the piston rod of the first hydraulic cylinder 9 extends, the first segment 8c of the hook arm 8 swings backward around the hinge point, causing the second segment 8d to swing backward as well. When the piston rod of the first hydraulic cylinder 9 retracts, the first segment 8c of the hook arm 8 swings forward, causing the second segment 8d to swing forward as well.

[0056] The hook arm 8 comprises a first hook body 8a and a second hook body 8b, which extend from both sides of the second segment 8d along their length or approximately along their length. The first hook body 8a extends beyond the second hook body 8b and then bends inward at a certain angle. During the swinging of the hook arm, the first hook body 8a is used to pull the hook arm connecting chassis 5 forward, and the second hook body 8b is used to push the hook arm connecting chassis 5 backward.

[0057] The hooklift truck described here is merely an illustrative example and does not limit the hooklift connecting chassis of this application to only be connected to hooklift trucks of this type. As long as the hooklift truck has a structure that can drive the hooklift to swing a certain range in the forward and backward directions, and can pull the hooklift connecting chassis onto the truck bed when swinging forward, and push the hooklift connecting chassis onto the ground when swinging backward, it is all possible.

[0058] In some embodiments, the first segment 8c and the second segment 8d can be connected separately. For example, a coaxial second hydraulic cylinder 8e is installed at the end of the first segment 8c, and the second segment 8d is installed on the piston rod of the second hydraulic cylinder 8e. The position of the second segment 8d can be controlled by the extension and retraction of the piston rod.

[0059] When the piston rod of the first cylinder 9 of the hooklift truck extends, the first segment 8c of the hooklift 8 swings backward around the hinge point, causing the second segment 8d to swing backward as well. After swinging to a certain extent, the vehicle is moved back slightly so that the hook of the hooklift 8 is positioned below the hook on the upright plate. When the piston rod of the first cylinder 9 retracts, the first segment 8c of the hooklift 8 swings forward, causing the second segment 8d to swing forward as well. This causes the hook to swing forward and hook onto the hook at the top of the upright plate, thereby pulling the hooklift connected to the chassis forward and upward onto the truck bed.

[0060] In some embodiments, an auxiliary roller 10 is provided at the rear end of the hook arm transport vehicle. When the hook arm drives the hook arm connecting chassis to move, the lower surface of the hook arm connecting chassis rests on the auxiliary roller 10. The passive rotation of the auxiliary roller can help the hook arm connecting chassis move more smoothly.

[0061] The following describes the coordinated use of the hooklift connecting chassis and the hooklift transport vehicle. First, the working equipment, such as a de-icing agent spreader, is installed on the hooklift connecting chassis. Then, the piston rod of the first cylinder 9 of the hooklift transport vehicle extends, and the hook arm swings backward to a certain extent. The vehicle is then moved back slightly so that the hook of the hook arm 8 is positioned below the hook on the upright plate. Next, the piston rod of the first cylinder 9 retracts, and the hook arm swings forward, causing the hook to swing forward and hook onto the hook at the top of the upright plate. This pulls the hooklift connecting chassis forward and onto the truck bed. Specifically, the first hook body 8a pulls the hooklift connecting chassis forward and onto the truck bed. Then, the second cylinder 8e pushes the second section 8d forward, thereby moving the hooklift connecting chassis forward slightly to ensure a safer position for the hooklift connecting chassis. After the working equipment completes its work, the second cylinder 8e retracts, pulling the second section 8d towards the rear of the vehicle, thereby causing the hook arm connecting chassis to move backward slightly. Then, the piston rod of the first cylinder 9 of the hook arm transport vehicle extends, and the hook arm swings backward towards the rear of the vehicle. As a result, the second hook body 8b pushes the hook arm connecting chassis backward and lowers. The roller 4 at the rear end of the hook arm connecting chassis contacts the ground. The piston rod of the first cylinder 9 continues to extend, and the hook arm connecting chassis continues to move backward and lower until the hook arm connecting chassis is completely placed on the ground.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hook-arm connecting chassis, characterized in that, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

2. The hook-arm connection chassis of claim 1, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

3. The hook-arm connection chassis of claim 1, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

4. The hook-arm connection chassis of claim 1, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

5. A snowmelt spreader characterized by, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

6. A hook-arm transport vehicle characterized by The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

7. The hook-arm cart of claim 6, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

8. The hook-arm cart of claim 7, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

9. The hook-arm cart of claim 6, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader.

10. The hook-arm cart of claim 7, wherein, The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-melting agent spreader. The utility model relates to a hook arm connecting chassis for snow-m

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