Hoisting equipment for large pump

Abstract

The utility model discloses hoisting equipment for a large pump. The equipment comprises a door-shaped frame, a lifting arm, a sliding lifting appliance and a ground nail, the structure of the door-shaped frame provides stable support for lifting operation, and the door-shaped frame can bear the weight of a large pump and force in all directions. The sliding lifting appliance moves along the lifting arm through the pulley, so that the large pump is easily transferred to other positions from a station, accurate positioning is achieved, and operation is simplified. The equipment is fixed through the ground nails, stability is improved, and safety of the hoisting process is ensured. The inhaul cable design of the sliding lifting appliance improves the moving convenience, extra equipment such as a crane is not needed, the lifting cost is reduced, and the applicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, specifically to a hoisting device for a large pump. Background Technology

[0002] Pumps are commonly installed on large liquid tanks for liquid transfer and circulation. After prolonged operation, these pumps may malfunction or experience component aging, requiring maintenance or replacement. However, liquid tanks typically lack facilities designed for equipment hoisting and maintenance, making on-site repair and dismantling extremely complex should damage occur. Existing hoisting methods include the following, but each has its drawbacks:

[0003] Using a crane for lifting: Using a crane to lift faulty equipment incurs additional lifting costs, significantly increasing maintenance costs. Furthermore, when the liquid tank is indoors, using a crane requires drilling holes in the roof, increasing the complexity of on-site operations and creating safety hazards due to rainwater accumulation or seepage.

[0004] Setting up supports over the liquid tank: Erecting temporary supports over the tank to lift the equipment is one solution, but this is difficult to do and the supports often cannot stably support the weight of the equipment, posing significant safety hazards. Furthermore, even if the supports can lift the equipment, they cannot allow for lateral movement of the equipment out of the tank, affecting subsequent maintenance or replacement.

[0005] To address the aforementioned issues, there is an urgent need for a simple, safe, and stable hoisting device that can quickly and conveniently complete hoisting and relocation work when equipment fails, effectively reducing maintenance costs and improving maintenance efficiency. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this utility model provides a hoisting device for large pumps.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model discloses a hoisting device for a large pump, comprising:

[0009] A portal frame, comprising two symmetrically arranged vertical bars, the upper ends of which are fixedly connected by a horizontal bar; a strip base is provided at the lower end of the horizontal bar, the strip base being arranged perpendicularly to the vertical bar; the strip base is fixedly connected to the ground by ground nails.

[0010] The lifting boom is arranged perpendicular to the crossbar and is fixedly connected to the crossbar; the end of the lifting boom that is not fixedly connected to the crossbar is fixedly connected to the wall by ground nails.

[0011] A sliding spreader is slidably connected to the lifting boom and can slide along the lifting boom; the sliding spreader can be connected to pulleys.

[0012] Ground nails, specifically expansion bolts.

[0013] After the gantry frame and lifting boom are installed in place using ground nails, the entire lifting equipment is fixed. At this point, part of the lifting boom is positioned directly above the large pump, and another part is positioned directly above the maintenance or transfer position. During use, the large pump is lifted from the work position using ropes via pulleys connected to the sliding spreader. Then, the sliding spreader is moved to allow the large pump to travel along the lifting boom from the work position to the transfer position. Finally, the large pump is transferred using transport equipment.

[0014] In summary, after the hoisting equipment is installed, the gantry frame structure provides stable support for the hoisting operation of large pumps. The vertical arrangement of the vertical and horizontal bars, as well as the fixing method of the strip base, can withstand the weight of the large pump and the forces generated in various directions during hoisting, making the gantry frame less prone to tilting or swaying. Furthermore, the secure connection of the strip base to the ground using ground spikes further enhances the stability of the gantry frame, ensuring the safety of the equipment during operation.

[0015] The sliding spreader design allows for convenient adjustment of the position of large pumps during hoisting. Its sliding connection enables the spreader to move flexibly along the lifting boom, achieving precise pump positioning without repeated installation and disassembly. The pulleys connected to the sliding spreader, in conjunction with the ropes, effectively reduce friction and resistance during hoisting, making the process smoother. Furthermore, the position adjustment of the sliding spreader simplifies the hoisting steps, further improving hoisting efficiency.

[0016] or,

[0017] A hoisting device for a large pump, comprising:

[0018] A portal frame, comprising a first half-frame and a second half-frame, wherein the first half-frame and the second half-frame are a pair of vertically bent bars with opposite bending directions, the first half-frame is inserted into the second half-frame to form a portal frame with adjustable width, and the second half-frame is provided with several set bolts; the lower ends of the first half-frame and the second half-frame are respectively connected to an adjustable support leg for adjusting the height of the portal frame.

[0019] The lifting arm is slidably connected to the upper bent portion of the second half frame of the portal frame, and the lifting arm is arranged perpendicularly to the portal frame; the end of the lifting arm that is not connected to the portal frame is fixedly connected to the wall by a ground nail, or connected to the ground by a vertically arranged movable support rod; one end of the movable support rod is connected to the portal frame, and the other end is connected to the ground.

[0020] A sliding spreader is slidably connected to the lifting boom and can slide along the lifting boom; the sliding spreader can be connected to pulleys.

[0021] Ground spikes, which pass through the gantry frame or lifting arm and are inserted into the ground or wall, are provided with mating threads and nuts to fix the gantry frame or lifting arm to the ground or wall.

[0022] To enhance the versatility of the gantry frame, the widths of the first and second half-frames can be adjusted via plug-in connections and set bolts to accommodate the hoisting needs of large pumps of varying widths and heights. The plug-in design of the two half-frames not only facilitates the installation and disassembly of the gantry frame but also provides flexible adjustments for different working conditions, suitable for various specifications of large pumps. Furthermore, adjustable outriggers can be height-adjusted according to actual site requirements, ensuring the gantry frame's levelness and stability, making the hoisting process safer and more reliable.

[0023] Furthermore, the aforementioned adjustable support leg includes a vertical sleeve and a strip base. One end of the vertical sleeve is vertically and fixedly connected to the strip base, and the other end is sleeved with the first half-frame or the second half-frame. The vertical sleeve is provided with a set bolt. The adjustable support leg is equipped with several pads for adjusting the height of the portal frame. When it is necessary to raise the portal frame, several pads are placed into the vertical sleeve. The adjustable support leg is provided with a set bolt. The strip base is fixedly connected to the ground by ground nails.

[0024] The adjustable outriggers' vertical sleeves and strip base design ensure the gantry frame's robustness. Set bolts on the vertical sleeves allow for easy locking of the outrigger height, preventing height shift under load. Pads can be added or removed within the vertical sleeves, further increasing the adaptability of the adjustable outriggers to withstand the significant downward pressure when hoisting large pumps, making them suitable for hoisting scenarios with varying height requirements. When the ground is uneven, different numbers of pads can be used for adjustment to ensure the gantry frame remains level, enhancing overall stability.

[0025] Furthermore, the aforementioned lifting boom includes;

[0026] The arm body has one end slidably connected to the second half-frame via a clamp, and the other end is fixedly connected to the fixed base;

[0027] The clamp has a rectangular cross-section with a notch on one side and is fitted onto the second half-frame. The notch is used to avoid the set bolts on the second half-frame when the clamp slides along the second half-frame.

[0028] The mounting base is used to fix the arm body to the wall with ground nails, or to fix it to the movable support rod with ground nails.

[0029] The design of the lifting boom allows it to support the weight of a large pump when connected to the second half-frame, while also allowing for adjustment of its sliding position according to actual conditions. The clamps, with a notch on one side, avoid the location of the set bolts during sliding, making the lifting boom's adjustment more convenient. The mounting base is connected to the wall or movable support rod via ground nails, ensuring the stability of the lifting boom and preventing loosening or deformation during hoisting.

[0030] Furthermore, the aforementioned sliding lifting device includes:

[0031] Connecting plates, wherein two connecting plates are arranged symmetrically;

[0032] The rollers are provided in two, which are arranged vertically between the two connecting plates and are perpendicular to the connecting plates. The two rollers are located on the upper and lower sides of the lifting arm and are in contact with its upper and lower surfaces.

[0033] The hanging rod is positioned between the two connecting plates and below the lower roller, for connection with the pulley.

[0034] The sliding spreader's structure further enhances the equipment's stability during lifting. Two rollers contact the upper and lower surfaces of the lifting boom respectively, ensuring stability and preventing swaying during sliding. The symmetrical design of the connecting plates not only strengthens the spreader's load-bearing capacity but also effectively distributes the stress on the rollers, extending the equipment's service life. Hanging rods connect to the pulleys, providing reliable mounting points for lifting large pumps.

[0035] Furthermore, the aforementioned ground stakes include:

[0036] The stepped shaft portion consists of several stepped shafts with diameters increasing sequentially from small to large.

[0037] The threaded part is a threaded cylinder that is arranged coaxially with the stepped shaft part and is located at the end of the stepped shaft part with the largest diameter.

[0038] The prism portion, which is located at the other end of the threaded portion, can serve as the force-bearing portion when hammering the ground nail.

[0039] The stepped shaft design of the ground stake provides stable support, facilitating its fixation to the ground or wall and preventing loosening. The threaded section then remains stationary, allowing it to be secured to the frame or lifting arm via a nut after passing through the threaded section. The prism section, acting as the load-bearing part of the ground stake, ensures it is not damaged during hammering. This overall structural design enhances the stability and robustness of the equipment during installation.

[0040] Furthermore, the aforementioned movable support rod includes:

[0041] The connecting head is fixedly connected to the lifting arm using ground nails.

[0042] The support rod has one end fixedly connected to the connecting head and the other end fixedly connected to the bottom; the support rod is arranged perpendicularly to the lifting arm.

[0043] At the bottom, the aforementioned bottom is a rectangular plate that can transmit vertical pressure to the load-bearing foundation.

[0044] The movable support rod's connecting head and strut allow for flexible attachment to the lifting boom, while the rectangular plate at the bottom effectively transmits the pressure borne by the lifting boom. When there are no walls nearby during hoisting, the movable support rod provides stable support during the hoisting process. This design effectively distributes the pressure during hoisting, preventing structural deformation and tilting caused by localized stress.

[0045] Furthermore, the aforementioned sliding spreader is equipped with a spreader movement cable. One end of the spreader movement cable is fixedly connected to the sliding spreader, and the other end passes through a fixed pulley on the lifting arm and extends vertically downward to be fixedly connected to the handle.

[0046] In use, the large pump is lifted from the work position by ropes through pulleys connected to the sliding spreader. Then, the moving cable of the spreader is pulled to move the sliding spreader, which can move the large pump from the work position to the transfer position along the lifting arm. Then, the large pump is transferred by the transport equipment.

[0047] The sliding spreader's movement cable design makes its movement easier and more controllable. During use, pulling the cable effectively adjusts the spreader's position, allowing large pumps to move freely between work positions, maintenance positions, or transfer positions, reducing the complexity of manual operation. Furthermore, the fixed pulleys on the lifting boom reduce friction during cable movement, making the spreader's movement smoother and providing a convenient method for lifting operations.

[0048] The beneficial effects of this utility model are as follows:

[0049] Reduced hoisting costs: The sliding hoisting device designed in this invention is fixedly installed above the liquid pool by a bracket and moves along a track by a sliding lifting device, eliminating the need for a crane or other additional equipment, thus reducing additional costs during the hoisting process and simplifying equipment relocation. Compared to traditional methods, this device reduces labor and equipment usage costs while also avoiding the additional expenses of crane rental.

[0050] Simple to operate and highly safe: The rational design of the sliding hoist and support in the device allows the equipment to move smoothly above the liquid pool, avoiding safety hazards caused by unstable hoisting. After the equipment is lifted to a certain height by the support device, it can be slid to the edge of the liquid pool for unloading, avoiding the insecurity of building temporary supports on the pool and effectively improving the stability and safety of the operation process.

[0051] High applicability: In this device, the pulleys can slide freely along the track, and the sliding lifting device has a load-bearing capacity of 600kg, which can meet the lifting and transfer needs of heavy equipment and is suitable for the lifting of various large pump equipment. Even when the space above the liquid pool is limited, the device can still achieve stable lifting and relocation of equipment, with flexible operation and a wide range of applications.

[0052] Reduced structural modification requirements: The device design allows the pulley system to move freely on the slide rails and remove the equipment from the liquid pool, avoiding large-scale modifications to the building structure and reducing potential safety hazards caused by structural openings. Attached Figure Description

[0053] Figure 1 : A three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0054] Figure 2 : A three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0055] Figure 3 Another three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0056] Figure 4 : Front view of Embodiment 2 of this utility model;

[0057] Figure 5 Side view of Embodiment 2 of this utility model;

[0058] Figure 6 : A three-dimensional structural diagram of the first half-frame and the second half-frame of Embodiment 2 of this utility model;

[0059] Figure 7 : A three-dimensional structural diagram of the adjustable support leg in Embodiment 2 of this utility model;

[0060] Figure 8 : A three-dimensional structural diagram of the portal frame in Embodiment 2 of this utility model;

[0061] Figure 9 : A three-dimensional structural diagram of the boom of Embodiment 2 of this utility model;

[0062] Figure 10 : Front view of the boom of embodiment 2 of this utility model;

[0063] Figure 11 : A three-dimensional structural diagram of the sliding lifting device in Embodiment 2 of this utility model;

[0064] Figure 12 : Front view of the sliding lifting device of Embodiment 2 of this utility model;

[0065] Figure 13 : A three-dimensional structural diagram of the ground nail in Embodiment 2 of this utility model;

[0066] Figure 14 : A three-dimensional structural diagram of Embodiment 2 of this utility model using a movable support rod;

[0067] Figure 15 : A three-dimensional structural schematic diagram of Embodiment 3 of this utility model;

[0068] Figure 16 : A schematic diagram of the structure of embodiment 3 of this utility model;

[0069] In the diagram: 1-Gantry frame, 2-Lifting boom, 3-Sliding lifting device, 4-Ground spike, 5-Modible support rod, 6-Lifting device moving cable, A-Ground, B-Wall, 11-First half-frame, 12-Second half-frame, 13-Adjustable outrigger, 14-Padded block, 21-Boom body, 22-Clamp, 23-Fixed seat, 31-Connecting plate, 32-Roller, 33-Hanging rod, 41-Step shaft, 42-Threaded part, 43-Pyramidal part. Detailed Implementation

[0070] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0071] Example 1: As Figure 1 As shown, a hoisting device for a large pump includes:

[0072] A portal frame 1 includes two symmetrically arranged vertical bars, the upper ends of which are fixedly connected by a horizontal bar; a strip base is provided at the lower end of the horizontal bar, the strip base is arranged perpendicularly to the vertical bar; the strip base is fixedly connected to the ground by a ground nail 4.

[0073] The lifting arm 2 is arranged perpendicular to the crossbar and is fixedly connected to the crossbar; the end of the lifting arm 2 that is not fixedly connected to the crossbar is fixedly connected to the wall through a ground nail 4.

[0074] The sliding spreader 3 is slidably connected to the lifting boom 2 and can slide along the lifting boom 2; the sliding spreader 3 can be connected to pulleys.

[0075] Ground nail 4, the aforementioned ground nail 4 is an expansion bolt.

[0076] After the gantry frame 1 and the lifting boom 2 are installed in place with ground nails, the hoisting equipment is fixed as a whole. At this time, part of the lifting boom 2 is located directly above the large pump, and part of the lifting boom 2 is also located directly above the transfer position. When in use, the large pump is lifted from the work position by ropes through the pulleys connected to the sliding spreader 3. Then, the sliding spreader 3 is moved so that the large pump moves from the work position to the transfer position along the lifting boom 2. Then, the large pump is transferred by the transport equipment.

[0077] In summary, after the hoisting equipment is installed, the gantry frame 1 provides stable support for the hoisting operation of the large pump. The vertical arrangement of the vertical and horizontal bars, as well as the fixing method of the strip base, can withstand the weight of the large pump and the forces generated in various directions during hoisting, making the gantry frame 1 less prone to tilting or swaying. In addition, the strip base is firmly connected to the ground by the ground nails 4, which further enhances the stability of the gantry frame and ensures the safety of the equipment during operation.

[0078] The sliding spreader 3 is designed to allow for convenient adjustment of the position of large pumps during hoisting. Its sliding connection allows the spreader to move flexibly along the lifting boom 2, achieving precise pump positioning without multiple installations and disassemblies. The pulleys connected to the sliding spreader 3, in conjunction with the ropes, effectively reduce friction and resistance during hoisting, making the process smoother. Furthermore, the position adjustment of the sliding spreader 3 simplifies the hoisting steps, further improving hoisting efficiency.

[0079] Example 2: As Figure 2-14 As shown, a hoisting device for a large pump includes:

[0080] A portal frame 1 includes a first half-frame 11 and a second half-frame 12. The first half-frame 11 and the second half-frame 12 are a pair of vertically bent bars with opposite bending directions. The first half-frame 11 is inserted into the second half-frame 12 to form a portal frame 1 with adjustable width. Several set bolts are provided on the second half-frame 12. The lower ends of the first half-frame 11 and the second half-frame 12 are respectively connected to an adjustable support leg 13 for adjusting the height of the portal frame 1.

[0081] The lifting arm 2 is slidably connected to the upper bent portion of the second half-frame 12 of the portal frame 1, and the lifting arm 2 is arranged perpendicularly to the portal frame 1; the end of the lifting arm 2 that is not connected to the portal frame 1 is fixedly connected to the wall by a ground nail 4, or connected to the ground by a vertically arranged movable support rod 5; one end of the movable support rod 5 is connected to the portal frame 1, and the other end is connected to the ground;

[0082] The sliding spreader 3 is slidably connected to the lifting boom 2 and can slide along the lifting boom 2; the sliding spreader 3 can be connected to pulleys.

[0083] Ground nail 4, which passes through the gantry frame 1 or the lifting arm 2 and is inserted into the ground or wall, is provided with matching threads and nuts to fix the gantry frame 1 or the lifting arm 2 to the ground or wall.

[0084] To enhance the versatility of the gantry frame 1, the widths of the first half-frame 11 and the second half-frame 12 can be adjusted via plug-in connections and set bolts to accommodate the hoisting needs of large pumps of varying widths and heights. The plug-in design of the two half-frames not only facilitates the installation and disassembly of the gantry frame 1 but also provides flexible adjustments for different hoisting scenarios, suitable for various specifications of large pumps. Furthermore, the adjustable outriggers 13 can be height-adjusted according to actual site requirements, ensuring the levelness and stability of the gantry frame 1 and making the hoisting process safer and more reliable.

[0085] The adjustable support leg 13 includes a vertical sleeve and a strip base. One end of the vertical sleeve is vertically fixed to the strip base, and the other end is sleeved with the first half frame 11 or the second half frame 12. The vertical sleeve is provided with a set bolt. The adjustable support leg 13 is equipped with several pads 14 for adjusting the height of the portal frame 1. When it is necessary to raise the portal frame 1, several pads 14 are placed into the vertical sleeve. The adjustable support leg 13 is provided with a set bolt. The strip base is fixedly connected to the ground by ground nails 4.

[0086] The design of the vertical sleeve and strip base of the adjustable outrigger 13 ensures the sturdiness of the gantry frame 1. The set bolts on the vertical sleeve facilitate locking the outrigger height, preventing height shift under load. Pads 14 can be added or removed from the vertical sleeve, further increasing the adaptability of the adjustable outriggers to withstand the greater downward pressure when hoisting large pumps, suitable for hoisting scenarios with varying height requirements. When the ground is uneven, different numbers of pads can be used for adjustment to ensure the gantry frame 1 is level, enhancing overall stability.

[0087] The aforementioned lifting boom 2 includes;

[0088] The arm body 21 has one end slidably connected to the second half-frame 12 via a clamp 22, and the other end is fixedly connected to the fixed base 23.

[0089] The clamp 22 has a rectangular cross-section with a notch on one side and is fitted onto the second half-frame 12. The notch is used to avoid the set bolts on the second half-frame 12 when the clamp 22 slides along the second half-frame 12.

[0090] The fixed base 23 fixes the arm body 21 to the wall by means of ground nails 4, or fixes it to the movable support rod 5 by means of ground nails 4.

[0091] The design of the lifting boom 2 allows it to support the weight of a large pump when connected to the second half-frame 12, while also allowing for adjustment of its sliding position according to actual conditions. The clamp 22, with a notch on one side, avoids the location of the set bolts during sliding, making the adjustment of the lifting boom 2 more convenient. The fixed base 23 is connected to the wall or movable support rod 5 via ground nails 4, ensuring the stability of the lifting boom 2 and preventing loosening or deformation during hoisting.

[0092] The aforementioned sliding lifting device 3 includes:

[0093] Connecting plates 31, wherein two connecting plates 31 are arranged symmetrically;

[0094] Rollers 32, two of them are provided, which are arranged vertically between two connecting plates 31 and are perpendicular to the connecting plates 31. The two rollers 32 are located on the upper and lower sides of the lifting arm 2 and are in contact with its upper and lower surfaces.

[0095] Hanging rod 33 is disposed between two connecting plates 31 and below the lower roller 32 for connection with pulley.

[0096] The structure of the sliding spreader 3 further enhances the stability of the equipment during hoisting. Two rollers 32 can contact the upper and lower surfaces of the lifting boom 2 respectively, ensuring the spreader remains stable during sliding and preventing swaying. The symmetrical design of the connecting plate 31 not only enhances the load-bearing capacity of the spreader but also effectively distributes the force on the rollers 32, extending the service life of the equipment. The hanging rod 33 is used to connect the pulleys, providing a reliable hanging point for hoisting large pumps.

[0097] The aforementioned ground stake 4 includes:

[0098] Stepped shaft portion 41, wherein the stepped shaft portion 41 comprises a plurality of stepped shafts with diameters increasing sequentially from small to large;

[0099] The threaded portion 42 is a threaded cylinder that is coaxially arranged with the stepped shaft portion 41 and is located at the end of the stepped shaft portion 41 with the largest diameter.

[0100] Prismatic portion 43, which is provided at the other end of threaded portion 42, can serve as the force-bearing portion when hammering ground nail 4.

[0101] The stepped shaft portion 41 of the ground nail 4 provides stable support, facilitating its fixation to the ground or wall and preventing loosening. The threaded portion 42 then remains stationary; after passing through the gantry frame 1 or lifting arm 2, the gantry frame 1 or lifting arm 2 can be secured with a nut. The prism portion 43 serves as the load-bearing part of the ground nail 4, ensuring it is not damaged during hammering. This overall structural design enhances the stability and robustness of the equipment during installation.

[0102] The aforementioned movable support rod 5 includes:

[0103] The connecting head is fixedly connected to the lifting arm 2 by ground nails 4;

[0104] The support rod has one end fixedly connected to the connecting head and the other end fixedly connected to the bottom; the support rod is arranged perpendicularly to the lifting arm 2.

[0105] At the bottom, the aforementioned bottom is a rectangular plate that can transmit vertical pressure to the load-bearing foundation.

[0106] The connecting head and strut of the movable support rod 5 allow it to be flexibly connected to the lifting boom 2. Meanwhile, the rectangular plate at the bottom effectively transmits the pressure borne by the lifting boom 2. When there are no walls nearby, the movable support rod 5 provides stable support during hoisting. This design effectively distributes the pressure during hoisting, preventing structural deformation and tilting caused by localized stress.

[0107] Example 3: As Figure 15-16 As shown, the above embodiment 2 is also provided with a lifting device moving cable 6. One end of the lifting device moving cable 6 is fixedly connected to the sliding lifting device 3, and the other end passes through the fixed pulley provided on the lifting arm 2 and extends vertically downward to be fixedly connected to the handle.

[0108] In use, the large pump is lifted from the work position by the pulley connected to the sliding spreader 3 and the rope. Then, the spreader moving cable 6 is pulled to move the sliding spreader 3, so that the large pump can be moved from the work position to the transfer position along the lifting arm 2. Then, the large pump is transferred by the transportation equipment.

[0109] The design of the lifting cable 6 on the sliding spreader 3 makes the movement of the sliding spreader easier and more controllable. During use, pulling the lifting cable 6 effectively adjusts the position of the sliding spreader 3, allowing the large pump to move freely between its working position and maintenance or transfer position, reducing the complexity of manual operation. Furthermore, the fixed pulleys on the lifting boom 2 reduce friction during cable movement, making the movement of the spreader smoother and providing a convenient method for lifting operations.

[0110] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hoisting device for a large pump, characterized in that, include: A portal frame (1) includes two symmetrically arranged vertical bars, the upper ends of which are fixedly connected by a horizontal bar; a strip base is provided at the lower end of the horizontal bar, the strip base is arranged perpendicularly to the vertical bar; the strip base is fixedly connected to the ground by a ground nail (4); The lifting arm (2) is arranged perpendicular to the crossbar and is fixedly connected to the crossbar; the end of the lifting arm (2) that is not fixedly connected to the crossbar is fixedly connected to the wall by a ground nail (4); A sliding lifting device (3) is slidably connected to the lifting boom (2) and can slide along the lifting boom (2); the sliding lifting device (3) can be connected to pulleys; Ground nail (4), wherein the ground nail (4) is an expansion bolt.

2. A hoisting device for a large pump, characterized in that, include: A portal frame (1) includes a first half-frame (11) and a second half-frame (12). The first half-frame (11) and the second half-frame (12) are a pair of vertically bent bars with opposite bending directions. The first half-frame (11) is inserted into the second half-frame (12) to form a portal frame (1) with adjustable width. Several set bolts are provided on the second half-frame (12). The lower ends of the first half-frame (11) and the second half-frame (12) are respectively connected to an adjustable support leg (13) for adjusting the height of the portal frame (1). The lifting arm (2) is slidably connected to the upper bent portion of the second half frame (12) of the portal frame (1), and the lifting arm (2) is arranged perpendicularly to the portal frame (1); the end of the lifting arm (2) that is not connected to the portal frame (1) is fixedly connected to the wall by a ground nail (4), or connected to the ground by a vertically arranged movable support rod (5); one end of the movable support rod (5) is connected to the portal frame (1), and the other end is connected to the ground; A sliding lifting device (3) is slidably connected to the lifting boom (2) and can slide along the lifting boom (2); the sliding lifting device (3) can be connected to pulleys; Ground nail (4), which passes through the gantry frame (1) or the lifting arm (2) and is inserted into the ground or wall, is provided with matching threads and nuts to fix the gantry frame (1) or the lifting arm (2) to the ground or wall.

3. The hoisting equipment for a large pump as described in claim 2, characterized in that: The adjustable support leg (13) includes a vertical sleeve and a strip base. One end of the vertical sleeve is vertically fixed to the strip base, and the other end is sleeved with the first half frame (11) or the second half frame (12). The vertical sleeve is provided with a set bolt. The adjustable support leg (13) is equipped with several pads (14) for adjusting the height of the portal frame (1). When it is necessary to raise the portal frame (1), several pads (14) are placed into the vertical sleeve. The adjustable support leg (13) is provided with a set bolt. The strip base is fixedly connected to the ground by ground nails (4).

4. The hoisting equipment for a large pump as described in claim 2, characterized in that: The lifting boom (2) includes; The arm body (21) has one end slidably connected to the second half frame (12) via a clamp (22) and the other end fixedly connected to the fixed seat (23); The clamp (22) has a rectangular cross-section with a notch on one side and is fitted onto the second half-frame (12). The notch is used to avoid the set bolts on the second half-frame (12) when the clamp (22) slides along the second half-frame (12). The fixed base (23) fixes the arm body (21) to the wall by means of ground nails (4), or fixes it to the movable support rod (5) by means of ground nails (4).

5. A hoisting device for a large pump as described in any one of claims 1-4, characterized in that: The sliding lifting device (3) includes: Connecting plates (31), wherein two connecting plates (31) are arranged symmetrically; Rollers (32) are provided in two, which are arranged vertically between two connecting plates (31) and are perpendicular to the connecting plates (31). The two rollers (32) are located on the upper and lower sides of the lifting arm (2) and are in contact with its upper and lower surfaces. Hanging rod (33) is disposed between two connecting plates (31) and below the lower roller (32) for connection with the pulley.

6. A hoisting device for a large pump as described in any one of claims 1-4, characterized in that: The ground nail (4) includes: Stepped shaft portion (41), wherein the stepped shaft portion (41) is a plurality of stepped shafts with diameters increasing sequentially from small to large; The threaded part (42) is a cylinder with threads, which is coaxially arranged with the stepped shaft part (41) and is located at the end of the stepped shaft part (41) with the largest diameter. The prism part (43) is located at the other end of the threaded part (42) and can serve as the force-bearing part when the ground nail (4) is hammered.

7. A hoisting device for a large pump as described in any one of claims 2-4, characterized in that: The movable support rod (5) includes: The connecting head is fixedly connected to the lifting arm (2) by ground nails (4); A support rod, one end of which is fixedly connected to the connecting head and the other end of which is fixedly connected to the bottom; the support rod is arranged perpendicularly to the lifting arm (2); The bottom is a rectangular plate that can transmit vertical pressure to the load-bearing foundation.

8. A hoisting device for a large pump as described in any one of claims 1-4, characterized in that: The sliding lifting device (3) is provided with a lifting device moving cable (6). One end of the lifting device moving cable (6) is fixedly connected to the sliding lifting device (3), and the other end passes through the fixed pulley set on the lifting arm (2) and extends vertically downward to be fixedly connected to the handle.

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