A charging platform and drill and blast construction trolley

Abstract

The utility model belongs to the field of tunnel construction equipment, specifically provides a charge platform and drilling and blasting method construction trolley. The charge platform includes the fixed frame, is assembled with the lifting frame on the fixed frame, is connected with the lifting drive arrangement between the lifting frame and the fixed frame, is assembled with the armrest that can be lifted relative to the lifting frame on the lifting frame, is assembled with the basket arm on the armrest, is configured with the swing arm drive arrangement that drives the up and down swing of basket arm, is installed with the basket on the basket arm, is connected with the pulley mechanism between the armrest and the fixed frame, the pulley mechanism includes the pulley assembled in the top of the lifting frame, is wound with the traction cable on the pulley, both ends of traction cable are connected with the armrest and the fixed frame respectively, to pull the armrest relative to the lifting frame to rise through the traction cable when the lifting frame rises. The trolley includes above -mentioned charge platform. The basket of charge platform can move in the larger range, to satisfy the personnel efficient charge demand. When not charging, the space occupied by the charge platform is smaller after withdrawing, does not interfere with other work arms.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction equipment, and in particular relates to a charging platform and a drilling and blasting construction trolley. Background Technology

[0002] Drill-and-blast construction mainly includes drilling, charging, blasting, ventilation, muck removal, and initial support. Generally, different procedures are equipped with different specialized construction trolleys, and these specialized trolleys are now quite mature. However, for small-section tunnels such as single-track highways and railways, the narrow tunnel space, long passing times between different trolleys, and difficulties in coordinating procedures result in low actual construction efficiency.

[0003] To address the above issues, related technologies have begun to emerge, including multi-functional integrated machines with various functions. Patent application CN113530552A discloses a tunnel excavation trolley. This trolley includes a frame with a portal-shaped structure, forming a passageway at the bottom for muck trucks. Multiple working arms, an arch frame transport vehicle, an arch frame installation vehicle, and a telescopic platform are mounted on the frame, integrating drilling blasting holes, loading explosives, arch frame installation, and anchor bolt installation into a single unit. The telescopic platform is located on both sides of the frame, providing freedom of movement in both lateral and longitudinal directions, allowing workers to climb onto the platform for loading explosives. This multi-functional integrated machine eliminates the need for frequent maneuvering during construction, improving efficiency.

[0004] However, the telescopic platform on the aforementioned trolley, which is used by workers to load explosives, is located on the left and right sides of the platform, making it difficult for personnel to reach the center of the working face and thus unable to cover the entire cross-section. In actual construction, personnel still need to use other locations to load explosives, which is inefficient.

[0005] In some existing multi-functional integrated machines, a work basket is configured on the working arm (such as the arch frame installation arm). When loading medicine, the personnel can use the work basket of other working arms to load medicine. However, the work baskets on other working arms are generally designed for the characteristics of that working arm. In actual use, the position of the work basket needs to be adjusted frequently, resulting in very low work efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a charging platform to solve the technical problem of low efficiency in manual charging operations using drilling and blasting trolleys in the prior art. Another purpose of this invention is to provide a drilling and blasting trolley to solve the same technical problem.

[0007] To achieve the above objectives, the technical solution of the charging platform provided by this utility model is as follows: A loading platform includes a fixed frame, on which a liftable lifting frame is mounted. A lifting drive device connects the lifting frame and the fixed frame. An arm seat that can be raised and lowered relative to the lifting frame is mounted on the lifting frame. A basket arm is mounted on the arm seat. A swing arm drive device is configured to drive the basket arm to swing up and down. A basket is mounted on the basket arm. A pulley mechanism connects the arm seat and the fixed frame. The pulley mechanism includes a pulley mounted on the top of the lifting frame. A traction cable is wound around the pulley. The two ends of the traction cable are respectively connected to the arm seat and the fixed frame, so that when the lifting frame rises, the arm seat is pulled up relative to the lifting frame by the traction cable.

[0008] As a further improvement, the suspended basket arm includes an upper connecting rod, a lower connecting rod, and a vertical rod. One end of the upper connecting rod and the lower connecting rod are respectively hinged to the arm seat, and both ends of the vertical rod are respectively hinged to the other ends of the upper connecting rod and the lower connecting rod, so that the upper connecting rod, the lower connecting rod, the arm seat, and the vertical rod form a parallelogram mechanism. A horizontal suspended basket seat is connected to the vertical rod, and the suspended basket is assembled on the suspended basket seat.

[0009] As a further improvement, both the upper and lower links have two horizontally spaced and parallel links, and there is one vertical link located between the two upper and lower links.

[0010] As a further improvement, the bottom of the suspended platform is equipped with a rotary table with a vertically extending rotation axis, and the rotary table is mounted on the suspended platform arm to rotate and adjust the posture under the drive of the rotary table.

[0011] As a further improvement, the suspended platform includes a base connected to the platform arm and an extension that can move relative to the base to expand the working area for personnel.

[0012] As a further improvement, the extension section can be horizontally mounted on the base section to expand the working area for personnel by pulling the extension section outward.

[0013] As a further improvement, a lifting guide rail is provided on the back of the boom, and a guide groove is provided on the lifting frame to guide the lifting guide rail up and down.

[0014] As a further improvement, the traction cable is a steel wire rope, and the pulley has a rope groove on its outer circumference.

[0015] As a further improvement, the lifting drive device is a lifting cylinder mounted on the back side of the fixed frame, and a fixed seat is also connected to the back side of the fixed frame for mounting the fixed frame onto the vehicle frame via the fixed seat.

[0016] This utility model is a pioneering invention, and its beneficial effects are as follows: In implementation, the loading platform can be mounted on the front end of the trolley frame via a fixed bracket. When loading is required, the lifting frame rises under the drive of the lifting drive device. Simultaneously, the traction cable of the pulley mechanism pulls the boom seat upward, thereby raising the basket arm and the basket on the basket arm to a higher height, thus transporting personnel to different positions to meet the loading needs of different locations and improving loading efficiency.

[0017] When loading is not required, the lifting frame descends under the drive of the lifting drive device. At the same time, the traction cable of the pulley mechanism can pull the boom seat down, thereby driving the basket arm and the basket on the basket arm down to a lower position. At this time, the loading platform occupies less space and is located at a lower position, so it will not interfere with other processes and ensure that other processes can be carried out normally, thus ensuring efficient construction.

[0018] To achieve the above objectives, the technical solution of the drilling and blasting construction trolley provided by this utility model is as follows: A drilling and blasting construction trolley includes a frame. Two charging platforms, spaced apart on the left and right, are mounted at the front end of the frame. Each charging platform includes a fixed frame fixed to the frame. A lifting frame is mounted on the fixed frame. A lifting drive device connects the lifting frame and the fixed frame. An arm seat, which can be raised and lowered relative to the lifting frame, is mounted on the lifting frame. A basket arm is mounted on the arm seat. A swing arm drive device is provided for the basket arm to drive its up and down swing. A basket is mounted on the basket arm. A pulley mechanism connects the arm seat and the fixed frame. The pulley mechanism includes a pulley mounted on the top of the lifting frame. A traction cable is wound around the pulley. The two ends of the traction cable are connected to the arm seat and the fixed frame respectively, so that when the lifting frame rises, the arm seat is pulled up relative to the lifting frame by the traction cable.

[0019] As a further improvement, the suspended basket arm includes an upper connecting rod, a lower connecting rod, and a vertical rod. One end of the upper connecting rod and the lower connecting rod are respectively hinged to the arm seat, and both ends of the vertical rod are respectively hinged to the other ends of the upper connecting rod and the lower connecting rod, so that the upper connecting rod, the lower connecting rod, the arm seat, and the vertical rod form a parallelogram mechanism. A horizontal suspended basket seat is connected to the vertical rod, and the suspended basket is assembled on the suspended basket seat.

[0020] As a further improvement, both the upper and lower links have two horizontally spaced and parallel links, and there is one vertical link located between the two upper and lower links.

[0021] As a further improvement, the bottom of the suspended platform is equipped with a rotary table with a vertically extending rotation axis, and the rotary table is mounted on the suspended platform arm to rotate and adjust the posture under the drive of the rotary table.

[0022] As a further improvement, the suspended platform includes a base connected to the platform arm and an extension that can move relative to the base to expand the working area for personnel.

[0023] As a further improvement, the extension section can be horizontally mounted on the base section to expand the personnel working area by pulling the extension section outward, and the pulling direction of the extension section of the left and right loading platforms is towards the center.

[0024] As a further improvement, a lifting guide rail is provided on the back of the boom, and a guide groove is provided on the lifting frame to guide the lifting guide rail up and down.

[0025] As a further improvement, the traction cable is a steel wire rope, and the pulley has a rope groove on its outer circumference.

[0026] As a further improvement, the lifting drive device is a lifting cylinder mounted on the back side of the fixed frame, and a fixed seat is also connected to the back side of the fixed frame so that the fixed frame can be mounted on the vehicle frame through the fixed seat.

[0027] This utility model is an improved invention, and its beneficial effects are as follows: The drilling and blasting construction trolley provided by this utility model adopts a brand-new charging platform. When charging is required, the lifting frame rises under the driving action of the lifting drive device. At the same time, the traction cable of the pulley mechanism can pull the boom seat up, thereby driving the basket arm and the basket on the basket arm to rise to a higher height, so as to send the workers to different positions, meet the charging needs of different positions, and improve the charging efficiency.

[0028] When loading is not required, the lifting frame descends under the drive of the lifting drive device. At the same time, the traction cable of the pulley mechanism can pull the boom seat down, thereby driving the basket arm and the basket on the basket arm down to a lower position. At this time, the loading platform occupies less space and is located at a lower position, so it will not interfere with other processes and ensure that other processes can be carried out normally, thus ensuring efficient construction. Attached Figure Description

[0029] Figure 1 This is a front view of an embodiment of the drug loading platform of this utility model; Figure 2 This is a front view of an embodiment of the drug loading platform of this utility model; Figure 3 This is a rear view of an embodiment of the drug loading platform of this utility model; Figure 4 This is an isometric view of the basket arm of the embodiment of the drug loading platform of this utility model; Figure 5 This is a schematic diagram of the loading method of the drug loading platform of this utility model on the trolley.

[0030] Explanation of reference numerals in the attached figures: 1. Fixed frame; 2. Lifting cylinder; 3. Boom seat; 4. Suspended basket arm; 5. Suspended basket seat; 6. Turntable; 7. Suspended basket; 8. Pulley; 9. Traction cable; 10. Fixed seat; 11. Lifting frame; 301. Lifting guide rail; 401. Swing arm cylinder; 402. Upper connecting rod; 403. Lower connecting rod; 404. Vertical rod; 701. Basic part; 702. Extension part; 100. Frame. Detailed Implementation

[0031] When excavating tunnels using the drill-and-blast method, multiple processes are involved, such as drilling blast holes, loading explosives, installing anchor bolts, assembling arch frames, and spraying concrete. If multiple different functions are integrated on the same construction trolley, the overall construction efficiency can obviously be improved. Therefore, multi-functional trolleys with different working arms have begun to appear in the existing technology.

[0032] However, current multi-functional trolley designs involve mounting different working arms on the frame, such as rock drilling arms, anchor bolt installation arms, arch frame installation arms, and wet spraying robotic arms, which can perform corresponding construction operations. However, the loading of explosives into blast holes is usually still a manual operation, and current multi-functional trolleys do not have a dedicated loading platform for manual loading, resulting in low actual loading efficiency.

[0033] Unlike ordinary construction trolleys, multi-functional trolleys are equipped with multiple working arms. When designing the loading platform, in addition to meeting the needs of the workers, it is also necessary to consider the problem that the loading platform may interfere with other working arms when they are working.

[0034] Against this backdrop, this invention develops a novel explosive loading platform configurable on a construction trolley frame. The platform is equipped with a suspended basket for personnel operation, featuring two-stage lifting capabilities. The first stage employs a vertically adjustable lifting frame, while the second stage utilizes a pulley mechanism linked to the lifting frame, which in turn drives the boom to rise and fall relative to the lifting frame. This design ensures a wide range of vertical movement for the basket while minimizing the space occupied by the loading platform when not in use and in its retracted position. Furthermore, it avoids interference between the loading platform and other working arms, thus meeting the requirements of a multi-functional trolley.

[0035] Based on the above overall overview, the present invention will be further described in detail below with reference to the embodiments.

[0036] Specific embodiments of the loading platform provided by this utility model: The loading platform provided in this embodiment is as follows: Figures 1-3 As shown, it can be configured on a tunnel construction trolley, specifically installed at the front end of the trolley's frame 100, such as... Figure 5As shown. Specifically, the loading platform includes a fixed frame 1, which can be mounted on the vehicle frame 100. The fixed frame 1 serves as the mounting base for all parts of the loading platform. A lifting frame 11 is mounted on the fixed frame 1, and the lifting frame 11 can move up and down relative to the fixed frame 1. This means that the lifting frame 11 and the fixed frame 1 are in a lifting-guided engagement, that is, except for the degree of freedom of vertical movement, all other degrees of freedom of the lifting frame 11 are restricted. There are various ways to achieve the lifting-guided engagement, such as setting a sliding groove on the fixed frame 1, setting a sliding rail, slider, roller, etc. on the lifting frame 11, or setting a guide column on the fixed frame 1, and setting a linear bearing on the lifting frame 11 that is sleeved on the guide column and can slide along the guide column. Naturally, to realize the lifting movement of the lifting frame 11, a lifting drive device is also connected between the lifting frame 11 and the fixed frame 1. Under the driving action of the lifting drive device, the lifting frame 11 can realize a first-level lifting action relative to the fixed frame 1.

[0037] A boom base 3 is mounted on the lifting frame 11, and a basket arm 4 is mounted on the boom base 3. The boom base 3 can be understood as the base for mounting the basket arm 4. The boom base 3 can be raised and lowered relative to the lifting frame 11. Similarly, this also means that the boom base 3 and the lifting frame 11 are in a lifting and guiding cooperation. The raising and lowering of the boom base 3 relative to the lifting frame 11 constitutes the two-stage lifting of the loading platform. In some embodiments, such as... Figure 4 As shown, a lifting guide rail 301 can be installed on the boom 3. Specifically, the lifting guide rail 301 is located on the back of the boom 3. Correspondingly, a guide groove is provided on the lifting frame 11 to guide the lifting guide rail 301 vertically. The lifting guide rail 301 can be I-shaped or dovetail-shaped, and the shape of the guide groove matches the shape of the lifting guide rail 301. The lifting guide rail 301 is located on the back of the boom 3 and protrudes from the back of the boom 3. In this way, the lifting guide rail 301 also acts as a reinforcing rib, which can improve the strength of the boom 3.

[0038] When the lifting frame 11 rises, the boom 3 can rise relative to the lifting frame 11. Specifically, a pulley mechanism is connected between the boom 3 and the fixed frame 1. The pulley mechanism includes a pulley 8 mounted on the top of the lifting frame 11. The pulley 8 can roll relative to the lifting frame 11. A traction cable 9 is wound around the pulley 8, which can redirect the direction of the traction cable 9. The two ends of the traction cable 9 are connected to the fixed frame 1 and the boom 3, respectively.

[0039] When the lifting frame 11 rises, the pulley 8 at its top rises synchronously, and one end of the traction cable 9 is fixedly connected to the fixed frame 1. When the pulley 8 rises, it can also lift the end of the traction cable 9 connected to the boom seat 3, thereby raising the boom seat 3 relative to the lifting frame 11 from its lower end to its top end. When the lifting frame 11 descends, the pulley 8 descends synchronously, and under its own weight, the boom seat 3 descends relative to the lower end of the lifting frame 11.

[0040] The suspended basket arm 4 can swing up and down relative to the arm base 3. To achieve normal swinging of the suspended basket arm 4, a swing arm drive device is provided to drive its up and down swinging, such as a hydraulic cylinder or an electric push rod. For ease of description, the hydraulic cylinder here can be defined as the swing arm cylinder 401. A suspended basket 7 is installed on the suspended basket arm 4. The suspended basket 7 can provide a safe working space for the workers. When the swing arm swings up and down, it can move the suspended basket 7 back and forth and up and down in a combined motion to send the workers on the suspended basket 7 to a suitable loading position.

[0041] As described above, in actual construction, the loading platform of this utility model allows the suspended platform 7 to move up and down a considerable range, and in conjunction with the up-and-down swing of the suspended platform arm 4, it can transport workers to the appropriate loading position, thereby improving the efficiency of loading operations. When loading is not required, the suspended platform 7 can be lowered to a lower position to avoid interfering with other working arms on the construction trolley.

[0042] In a preferred embodiment, such as Figures 1-4 As shown, the suspended basket arm 4 and the arm base 3 form a parallelogram linkage mechanism, specifically including an upper link 402, a lower link 403, and a vertical link 404. Here, "upper" and "lower" refer to the relative positional relationship of the two links, meaning the upper link 402 is located above the lower link 403. One end (rear end) of the upper link 402 and the lower link 403 are hinged to the arm base 3, and the upper and lower ends of the vertical link 404 are hinged to the other ends (front end) of the upper link 402 and the lower link 403, respectively. The hinges can be pins or hinges; there are no specific limitations here. A horizontal suspended basket base 5 is connected to the vertical link 404, and the suspended basket 7 is assembled on the suspended basket base 5.

[0043] It is easy to understand that the upper connecting rod 402, lower connecting rod 403, vertical rod 404 and arm seat 3 form a parallelogram mechanism. As the swing arm cylinder 401 extends and retracts, the upper connecting rod 402 and lower connecting rod 403 can swing up and down synchronously. During this process, the basket seat 5 can remain in a horizontal state, improving the stability of the basket 7.

[0044] It should be noted that in other embodiments, the boom 4 can also be implemented in other ways, such as having only one boom hinged to the boom base 3, with a swing arm cylinder 401 connected between the boom base 3 and the boom, so that the boom can swing up and down through the extension and retraction of the swing arm cylinder 401. Of course, the boom can also be a telescopic boom capable of extending and retracting forward and backward.

[0045] Furthermore, to improve the reliability of parallelogram linkage mechanisms, such as... Figure 4 As shown, there are two upper connecting rods 402 and two lower connecting rods 403, and one vertical rod 404. The two upper connecting rods 402 and the two lower connecting rods 403 are arranged horizontally at intervals, and the vertical rod 404 is located between the two upper connecting rods 402 and the lower connecting rods 403. In this configuration, the suspended basket arm 4 can form a three-dimensional frame structure with higher structural strength, naturally resulting in higher reliability.

[0046] In a preferred embodiment, such as Figures 1-3 As shown, in order to increase the movement range of the suspended platform 7 and expand the range of work for the workers to load explosives, a rotary table 6 is configured at the bottom of the suspended platform 7. The rotary table 6 refers to a base platform with a rotary output end. The suspended platform 7 is mounted on the suspended platform arm 4 through the rotary table 6 and rotates and adjusts its posture under the drive of the rotary table 6, so that the working surface of the suspended platform 7 for the workers to stand on can swing to different positions, so that the workers can move to a position closer to the working face, which is convenient for loading explosives.

[0047] It should be noted that the structure of the rotary table 6 itself is existing technology, such as a rotary table 6 driven by a worm gear mechanism or a rotary table 6 equipped with a slewing bearing. These are corresponding products that can be directly purchased by those skilled in the art, and this article does not limit the rotary table 6 to any specific form.

[0048] In some preferred embodiments, the cable includes a base portion 701 connected to the suspended platform arm 4, and an extension portion 702 movable relative to the base portion 701. During construction, the extension portion 702 expands the working area for workers, thus extending their range of motion and facilitating the loading of explosives. When not loading explosives, the extension portion 702 can be retracted, preventing the suspended platform 7 from occupying excessive space.

[0049] Preferably, the extension 702 can be configured as a pull-out structure that can move horizontally relative to the base 701. When extended use is required, the operator can pull out the extension 702 to expand the working area. Specifically, the pull-out structure is similar to a telescopic structure, and the operator can pull out the extension 702 manually or with auxiliary tools.

[0050] For the construction trolley, to cover the entire cross-section of the explosive loading operation, two loading platforms are installed on the left and right sides of the front end of the frame 100, such as... Figure 5 As shown, the pull-out extensions 702 of both charging platforms are pulled out in a direction closer to the center (the center in the left-right direction). That is, the two charging platforms pull out their extensions 702 in a direction closer to each other, allowing personnel to move towards the center. For example... Figure 5 For the construction trolley with the gantry frame 100 shown, the two loading platforms can be distributed near the outriggers on the left and right sides. This allows the extension section 702 to be pulled towards the center, which obviously makes it easier for workers to move towards the center of the tunnel and further improves the convenience of loading explosives.

[0051] It should be noted that in other embodiments, the extension 702 of the suspended platform 7 can also take other forms, such as an extension structure that can be folded outwards. For example, the rock drilling rig service platform provided by the applicant in its patent application CN220033954U.

[0052] Regarding the pulley mechanism, in some embodiments, the traction cable 9 can be a steel wire rope, with a rope groove on the outer circumference of the pulley 8. This method results in a pulley mechanism with high strength and is relatively convenient. However, it should be noted that in other embodiments, the traction cable 9 can be a toothed chain, and the pulley 8 can be a sprocket. The sprocket and the toothed chain mesh together to achieve the same linkage effect.

[0053] Regarding the lifting drive device that drives the lifting frame 11 to rise and fall, in some embodiments, such as Figure 1 and Figure 3 As shown, the lifting drive device can be a hydraulic cylinder mounted on the back side of the fixed frame 1. For ease of description, the hydraulic cylinder here can be defined as lifting cylinder 2. The two ends of the lifting cylinder 2 are connected to the lifting frame 11 and the fixed frame 1, respectively. To ensure that the fixed frame 1 can still be normally connected to the trolley frame 100 even with the hydraulic cylinder mounted, a fixing seat 10 is also connected to the back side of the fixed frame 1, through which the fixed frame 1 can be mounted on the trolley frame 100.

[0054] It should be added here that the lifting drive device can of course have other implementation methods, such as using a winch and pulley 8 to pull the lifting frame 11 up and down.

[0055] Specific implementation method of the drilling and blasting construction trolley in this utility model: The drilling and blasting construction trolley includes a frame 100. Two charging platforms are arranged at intervals on the left and right sides of the front end of the frame 100. The structure of the charging platform is the same as the specific implementation method of the charging platform described above, and will not be described in detail here.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A loading platform, characterized in that, The system includes a fixed frame, on which a liftable lifting frame is mounted, a lifting drive device connecting the lifting frame and the fixed frame, an arm mount mounted on the lifting frame that can be raised and lowered relative to the lifting frame, a basket arm mounted on the arm mount, a swing arm drive device for driving the basket arm to swing up and down, a basket mounted on the basket arm, and a pulley mechanism connecting the arm mount and the fixed frame. The pulley mechanism includes a pulley mounted on the top of the lifting frame, a traction cable wound around the pulley, and the two ends of the traction cable connected to the arm mount and the fixed frame respectively, so that when the lifting frame rises, the arm mount is pulled up relative to the lifting frame by the traction cable.

2. The loading platform according to claim 1, characterized in that, The suspended basket arm includes an upper connecting rod, a lower connecting rod, and a vertical rod. One end of the upper connecting rod and the lower connecting rod are respectively hinged to the arm seat. Both ends of the vertical rod are respectively hinged to the other ends of the upper connecting rod and the lower connecting rod, so that the upper connecting rod, the lower connecting rod, the arm seat, and the vertical rod form a parallelogram mechanism. A horizontal suspended basket seat is connected to the vertical rod, and the suspended basket is assembled on the suspended basket seat.

3. The loading platform according to claim 2, characterized in that, Both the upper and lower links have two horizontally spaced and parallel links, and there is one vertical link located between the two upper and lower links.

4. The loading platform according to claim 1, characterized in that, The bottom of the suspended platform is equipped with a rotary table with a vertically extending rotation axis, and the platform is mounted on the arm of the suspended platform so that it can rotate and adjust its posture under the drive of the rotary table.

5. The loading platform according to any one of claims 1-4, characterized in that, The suspended platform includes a base connected to the platform arm and an extension that can move relative to the base to expand the working area for personnel.

6. The loading platform according to claim 5, characterized in that, The extension section is horizontally movable and mounted on the base section to expand the working area for personnel by pulling the extension section outward.

7. The loading platform according to any one of claims 1-4, characterized in that, A lifting guide rail is provided on the back of the boom, and a guide groove is provided on the lifting frame to guide the lifting guide rail up and down.

8. The loading platform according to any one of claims 1-4, characterized in that, The traction cable is a steel wire rope, and the pulley has a rope groove on its outer circumference.

9. The loading platform according to any one of claims 1-4, characterized in that, The lifting drive device is a lifting cylinder mounted on the back side of the fixed frame. A fixed seat is also connected to the back side of the fixed frame for mounting the fixed frame onto the vehicle frame via the fixed seat.

10. A drilling and blasting construction trolley, comprising a frame, characterized in that, The front end of the vehicle frame is equipped with two loading platforms spaced apart on the left and right. Each loading platform includes a fixed frame fixed to the vehicle frame, a lifting frame mounted on the fixed frame, a lifting drive device connecting the lifting frame and the fixed frame, an arm mount mounted on the lifting frame that can be raised and lowered relative to the lifting frame, a basket arm mounted on the arm mount, a swing arm drive device for driving the basket arm to swing up and down, a basket mounted on the basket arm, and a pulley mechanism connecting the arm mount and the fixed frame. The pulley mechanism includes a pulley mounted on the top of the lifting frame, a traction cable wound around the pulley, and the two ends of the traction cable connected to the arm mount and the fixed frame respectively, so that when the lifting frame rises, the arm mount is pulled up relative to the lifting frame by the traction cable.

11. The drilling and blasting construction trolley according to claim 10, characterized in that, The suspended basket arm includes an upper connecting rod, a lower connecting rod, and a vertical rod. One end of the upper connecting rod and the lower connecting rod are respectively hinged to the arm seat. Both ends of the vertical rod are respectively hinged to the other ends of the upper connecting rod and the lower connecting rod, so that the upper connecting rod, the lower connecting rod, the arm seat, and the vertical rod form a parallelogram mechanism. A horizontal suspended basket seat is connected to the vertical rod, and the suspended basket is assembled on the suspended basket seat.

12. The drilling and blasting construction trolley according to claim 11, characterized in that, Both the upper and lower links have two horizontally spaced and parallel links, and there is one vertical link located between the two upper and lower links.

13. The drilling and blasting construction trolley according to claim 10, characterized in that, The bottom of the suspended platform is equipped with a rotary table with a vertically extending rotation axis, and the platform is mounted on the arm of the suspended platform so that it can rotate and adjust its posture under the drive of the rotary table.

14. The drilling and blasting construction trolley according to any one of claims 10-13, characterized in that, The suspended platform includes a base connected to the platform arm and an extension that can move relative to the base to expand the working area for personnel.

15. The drilling and blasting construction trolley according to claim 14, characterized in that, The extension section can be horizontally mounted on the base section to expand the personnel working area by pulling the extension section outward, and the pulling direction of the extension section of the left and right loading platforms is towards the center.

16. The drilling and blasting construction trolley according to any one of claims 10-13, characterized in that, A lifting guide rail is provided on the back of the boom, and a guide groove is provided on the lifting frame to guide the lifting guide rail up and down.

17. The drilling and blasting construction trolley according to any one of claims 10-13, characterized in that, The traction cable is a steel wire rope, and the pulley has a rope groove on its outer circumference.

18. The drilling and blasting construction trolley according to any one of claims 10-13, characterized in that, The lifting drive device is a lifting cylinder mounted on the back side of the fixed frame. A fixed seat is also connected to the back side of the fixed frame so that the fixed frame can be mounted on the vehicle frame through the fixed seat.

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