Automatic hooking device and automatic hooking device for submersible sewage pump including the automatic hooking device

Abstract

The present invention discloses an automatic hooking device and an automatic hooking apparatus for a submersible sewage pump including the automatic hooking device, the automatic hooking device including a hanger, a spring, a hook and a shaft; the hook is an eccentric structure including an upper end portion and a lower end portion, the upper end portion is divided into a rod-shaped structure, the hanger includes a first side plate, the upper end portion of the hook is pivotally connected to the first side plate through an axis, one end of the spring is mounted on the upper end portion of the hook, and the other end of the spring is mounted on the first side plate; the hook has a center of gravity, the gravity of the hook generates a first torque in one direction on the shaft, and the component force of the spring elastic force in the vertical direction generates a second torque in the opposite direction to the above-mentioned first torque on the shaft; the automatic hooking apparatus for a submersible sewage pump includes the above-mentioned automatic hooking device, which can realize the lifting of the submersible sewage pump, and at the same time avoid the problem of the chain falling off under normal operation.

Description

Technical Field

[0001] The invention relates to a submersible sewage pump, in particular to an automatic hooking device and an automatic hooking device for a submersible sewage pump comprising the automatic hooking device. Background Art

[0002] Submersible sewage pumps are widely used, and automatic coupling installation is particularly common. Depending on the size of the pump, the pump is lifted or lowered by hand, electric hoist or electric crane through a lifting chain. After the pump is installed in place, one end of the lifting chain is hung on the side of the pool. Due to operational errors and other factors, the lifting chain may sink into the pool. In this case, the only way is to drain the pool and go down to the pool to pick up the lifting chain, which is a huge workload.

[0003] Therefore, the art still lacks an automatic hooking device and an automatic hooking device for a submersible sewage pump including the automatic hooking device, which is connected to the automatic hooking device of the submersible sewage pump through a lifting chain to automatically hook the submersible pump lifting frame, thereby lifting the submersible sewage pump, and at the same time avoiding problems such as lifting or dropping the pump by the lifting chain under normal operation, and falling of the lifting chain due to operational errors after the pump is installed. Summary of the invention

[0004] The purpose of the present invention is an automatic hooking device and an automatic hooking device for a submersible sewage pump including the automatic hooking device. Through strict structural design, the submersible sewage automatic device can lift multiple equipments and avoid the falling of the lifting chain due to operating errors and other reasons after the water pump is installed in place.

[0005] The present invention provides an automatic hooking device and an automatic hooking device for a submersible sewage pump including the automatic hooking device, wherein the automatic hooking device comprises a hanger, a spring, a hook and a shaft; the hook is an eccentric structure, comprising an upper end portion and a lower end portion, the upper end portion is a rod-shaped structure, the hanger comprises a first side plate, the upper end portion of the hook is pivotally connected to the first side plate through a shaft, one end of the spring is mounted on the upper end portion of the hook, and the other end of the spring is mounted on the first side plate;

[0006] The hook has a center of gravity, the hook gravity generates a first moment in one direction on the shaft, and the component of the spring force in the vertical direction generates a second moment on the shaft in the opposite direction to the first moment;

[0007] Wherein, when the automatic hook device is in an initial state, the first torque is equal to the second torque.

[0008] In another preferred embodiment, the lower end of the hook is divided into a flat hook structure for limiting.

[0009] In a preferred example, a center line of the pivot hole of the shaft on the first side plate coincides with a center line of the first side plate.

[0010] In another preferred example, the hanger of the automatic hook device also includes a second side plate, the second side plate is arranged opposite to the first side plate, and the shaft passes through the second side plate, so that the hook is located between the first side plate and the second side plate.

[0011] In another preferred example, the outer edge of the lower end portion of the hook is flush with one side of the first and second side plates.

[0012] In another preferred example, the hanger of the automatic hook device also includes a horizontal lifting rod, and lifting rod holes are provided on the first and second side plates, and the horizontal lifting rod passes through the upper ends of the first side plate and the second side plate in sequence.

[0013] In another preferred example, the horizontal lifting rod is welded to the first side plate and the second side plate.

[0014] In another preferred example, the center line of the lifting rod hole coincides with the center line of the first and second side plates.

[0015] In another preferred example, the automatic hooking device further includes a cotter pin, and the cotter pin is installed at both ends of the shaft.

[0016] In another preferred example, the device includes the above-mentioned automatic hooking device, and the device also includes a transverse rail and a vertical guide rail.

[0017] In another preferred embodiment, the cross rail is a square steel tube with holes at both ends.

[0018] In another preferred embodiment, the guide rail comprises a pair of square steel pipes arranged opposite to each other, and the guide rail is cooperatively connected with the cross rail so that the cross rail can slide up and down along the guide rail.

[0019] In another preferred embodiment, the first and second side plates of the automatic hooking device are provided with cross-rail through holes which cooperate with the cross-rail, and the cross-rail passes through the first and second side plates in sequence.

[0020] In another preferred example, the transverse rail is parallel to the horizontal lifting rod, and the transverse rail is arranged below the horizontal lifting rod.

[0021] In another preferred example, the device further includes a bottom plate disposed below the guide rail, and a rib plate disposed above the bottom plate and resting against the guide rail.

[0022] The beneficial effects of the present invention are that the automatic hooking device can achieve automatic hooking through the principle of torque balance, and the submersible sewage pump device including the automatic hooking device connects a lifting chain with the horizontal lifting rod of the automatic hooking device hanger to realize lifting and setting the submersible sewage pump at the bottom of the pool for discharging sewage. At the same time, it avoids the problems of lifting or dropping the pump by the lifting chain under normal operation, and the falling of the lifting chain due to operating errors after the pump is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the automatic hooking device of the submersible sewage pump of the present invention;

[0024] Figure 2a yes Figure 1 The structure diagram of the automatic hook device;

[0025] Figure 2b yes Figure 2a Side view of the automatic hook-setting device;

[0026] Figure 3 yes Figure 2a Schematic diagram of the middle hanger structure;

[0027] Figure 4a yes Figure 3 Side view of the middle side panel structure;

[0028] Figure 4b yes Figure 3 Main view of the middle side panel structure;

[0029] Figure 5 yes Figure 2a Schematic diagram of the central axis structure;

[0030] Figure 6a It is the main view of the hook structure;

[0031] Figure 6b It is a side view of the hook structure;

[0032] Figure 7a yes Figure 1 Main view of the center cross rail structure;

[0033] Figure 7b yes Figure 1 Top view of the center cross rail structure;

[0034] Figure 8a yes Figure 1 Schematic diagram of the middle guide rail structure;

[0035] Figure 8b yes Figure 1 Top view of the middle guide rail;

[0036] Fig. 9 It is a schematic diagram of the automatic hooking process of the automatic hooking device.

[0037] In each of the accompanying drawings, the symbols are as follows:

[0038] 1-Automatic hook device

[0039] 2- Horizontal rail

[0040] 3-Guide rail

[0041] 4-Submersible Sewage Pump

[0042] 41-Sewage pump lifting frame

[0043] 11- hanger 12- spring 13- hook 14- shaft 15- split pin

[0044] 111, 112-side plate 113-horizontal lifting rod

[0045] 1111-lifting rod hole 1112-cross rail hole 1113-pivot hole

[0046] 131-spring hole 132-pivot hole

[0047] 31- bottom plate 32- rib plate DETAILED DESCRIPTION

[0048] After extensive and in-depth research, the inventors have developed for the first time an automatic hooking device and a submersible sewage pump device including the automatic hooking device. The automatic hooking device can achieve automatic hooking through the principle of torque balance. The submersible sewage pump device including the automatic hooking device connects a lifting chain with a horizontal lifting rod of the automatic hooking device hanger to realize lifting and setting the submersible sewage pump at the bottom of the pool for discharging sewage. At the same time, it avoids the problems of lifting or dropping the pump by the lifting chain under normal operation, and the falling of the lifting chain due to operating errors after the pump is installed.

[0049] In the following description, many technical details are provided to help readers better understand the present application. However, those skilled in the art can understand that the technical solution claimed in the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0050] the term

[0051] As used herein, the term "initial state" refers to a state when the automatic hook setting device is not performing a hook setting operation.

[0052] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0053] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0054] like Figure 1 As shown, the automatic hooking device of the submersible sewage pump includes an automatic hooking device 1, a transverse rail 2 and a vertical guide rail 3. Figure 1 Also shown is a submersible sewage pump 4, which is provided with a sewage pump lifting frame 41. During the automatic hooking process of the submersible sewage pump automatic hooking device, the automatic hooking device 1 is connected to the sewage pump lifting frame 41, so that the submersible sewage pump 4 is lifted.

[0055] Combination Figure 2a -6, in this embodiment, the automatic hook device 1 includes a hanger 11, a spring 12, a hook 13, a shaft 14, and a cotter pin 15. The hanger 11 includes a first side plate 111, a second side plate 112 and a horizontal lifting rod 113 that are relatively arranged and of the same size. In this embodiment, the horizontal lifting rod 113 is a circular steel pipe, which is used to horizontally fix the first side plate and the second side plate. Lifting rod holes 1111 are respectively provided at the upper ends of the first side plate and the second side plate. The horizontal lifting rod 113 passes through the lifting rod holes of the first side plate 111 and the second side plate 112 in turn, and is welded to the first side plate and the second side plate; preferably, the center line of the lifting rod hole 1111 coincides with the center line of the first side plate and the second side plate.

[0056] In this embodiment, pivot holes 1113 are provided at the bottom of the first side plate and the second side plate, the hook is an eccentric structure with a center of gravity, the hook 13 is pivoted to the first side plate 111 through the shaft 14, and the hook 13 can rotate around the shaft 14; the upper end of the hook 13 is a rod-shaped structure, and the lower end is a flat hook-shaped structure for limiting, and a pivot hole 132 is provided on the rod-shaped structure at the upper end of the hook 13, and the shaft 14 passes through the pivot holes of the first side plate 111 and the second side plate 112 of the hook 13 in sequence, so that the hook 13 is located between the first side plate 111 and the second side plate 112. Preferably, the center line of the pivot holes on the first side plate and the second side plate coincides with the center line of the first side plate.

[0057] In the present embodiment, one end of the spring 12 is mounted on the upper end portion of the hook 13, and the other end of the spring is mounted on the first side plate 111. A spring hole 131 for mounting the spring is also provided on the rod-shaped structure at the upper end of the hook 13, wherein, in the length direction of the rod-shaped structure at the upper end portion of the hook, the pivot hole 132 on the hook is located between the center of gravity C1 of the hook and the spring hole 131 on the hook; therefore, in the present embodiment, the gravity of the hook 13 generates a first moment in the clockwise direction on the axis 14, and the component force of the elastic force of the spring 12 in the vertical direction generates a second moment in the counterclockwise direction on the axis 14; in the initial state of the automatic hooking device, the magnitude of the first moment in the clockwise direction is equal to the magnitude of the second moment in the counterclockwise direction, that is, the moment is balanced, thereby achieving the goal that the hook 13 does not rotate back and forth around the axis 14.

[0058] It should be noted that, in the initial state, the connection between the other end of the spring and the first side plate can be attempted multiple times during actual operation. When the hook does not rotate around the axis, preferably, when the upper end of the hook is parallel to the horizontal plane, a spring hole is drilled in the first side plate, and the other end of the spring is installed on the first side plate. That is to say, the spring has a certain elastic force in the initial state.

[0059] In this embodiment, the shaft 14 is round steel. In order to prevent the first side plate and the second side plate from sliding off the shaft, holes are opened at both ends of the shaft 14, and the cotter pins 15 are installed in the holes at both ends of the shaft.

[0060] In this embodiment, the first side plate 111 and the second side plate 112 of the automatic hook device are further provided with a cross rail through hole 1112 that cooperates with the cross rail 2, and the cross rail 2 passes through the first side plate 111 and the second side plate 112 in sequence. The cross rail 2 is parallel to the horizontal lifting rod 113 on the hanger, and the hanger 11 can slide horizontally along the cross rail 2; the cross rail is arranged below the horizontal lifting rod and above the spring. Preferably, the center line of the cross rail through hole on the first and second side plates coincides with the center line of the first and second side plates; preferably, the center lines of the lifting rod holes, cross rail through holes and pivot holes of the first and second side plates coincide and coincide with the center line of the first and second side plates.

[0061] like Figure 7a-8b As shown, in this embodiment, the cross rail 2 is a square steel pipe with holes at both ends; the guide rail 32 includes two square steel pipes arranged opposite to each other, and the guide rail is connected with the cross rail so that the cross rail can slide up and down along the guide rail, thereby realizing the automatic lifting of the submersible sewage pump by the automatic hooking device of the submersible sewage pump.

[0062] In this embodiment, a bottom plate 31 and a rib plate 32 for fixing the guide rail are respectively provided at the bottom of the guide rail 3. The rib plate 32 is arranged on the bottom plate 31 and respectively abuts against four surfaces of the square steel pipe for fixing the square steel pipe.

[0063] The steps of assembling and using the automatic hook-engaging device are described in detail below.

[0064] The assembly steps of the automatic hook device are as follows:

[0065] (1) The horizontal lifting rods pass through the lifting rod holes of the two side plates respectively and are welded to the two side plates to form a hanger;

[0066] (2) After the shaft passes through the first side plate, it passes through the hook pivot hole and then passes through the second side plate, and split pins are installed in the holes at both ends of the shaft;

[0067] (3) One end of the spring hook of the spring is inserted into the spring hole of the hook, and the other end is moved close to the top of the first side plate until the hook maintains a natural state and does not swing back and forth. A spring hole is drilled on the first side plate and the spring hook is inserted; that is, the spring has a certain amount of spring force in the initial state, and the spring force is balanced with the torque generated by the weight of the hook, so that the hook does not swing back and forth.

[0068] The steps for using the automatic hook device of the submersible sewage pump are as follows:

[0069] The guide rail is fixedly placed on the bottom of the pool of the submersible sewage pump;

[0070] Inserting the cross rail into the hanger cross rail through hole;

[0071] (2) A lifting chain of a hand, electric hoist or electric crane is connected to the horizontal lifting rod of the hanger of the automatic hook device;

[0072] (3) Placing both sides of the automatic hooking device cross rail in the guide rail;

[0073] (4) Slide the hanger along the cross rail so that the hanger is aligned with the lifting center of the pump;

[0074] (5) Slowly lower the automatic hook setting device to complete the automatic hook setting.

[0075] The process of automatic hooking by the automatic hooking device is described in detail as follows:

[0076] During the falling process of the automatic hook device, it touches the lifting frame of the sewage pump. After encountering an obstacle, the hook flips around the axis until the hook touches the lower part of the lifting rod of the lifting frame. When the hook is hung into the lifting hole of the lifting frame, the spring has been stretched, and the spring torque is much greater than the gravity torque of the hook. The hook flips forward around the axis and automatically completes the hooking action.

[0077] The principle of automatic hooking:

[0078] When the automatic hook device is falling, the hook first touches the water pump lifting frame. As the weight of the automatic hook device and the automatic hook device fall, the hook presses Fig. 9During this process, the spring is stretched, and after the hook mouth is hoisted into the lifting hole of the lifting frame, the spring is no longer stretched, and the spring begins to retract, driving the hook to complete the hooking work.

[0079] The main highlight of this new structure is that the automatic hook device uses the principle of moment balance and uses a spring to keep the hook from swinging forward and backward. The spring force moment is the product of the spring force component in the vertical direction and the horizontal force arm from the spring hook at the hook to the center of the hook axis. The hook gravity moment is the product of the hook gravity and the horizontal force arm between the hook mass center and the hook axis center. When the two moments are balanced, the hook will not swing forward and backward.

[0080] The implementation method of the present application has at least the following advantages:

[0081] (a) The automatic hooking device of the present application can realize automatic hooking;

[0082] (b) The automatic hook-attaching device of the present application is simple in structure, novel and easy to operate;

[0083] (c) The automatic hooking device of the submersible sewage pump of the present application can realize the lifting of the submersible sewage pump;

[0084] (d) The automatic hooking device of the submersible sewage pump of the present application has accurate hooking, and the superior performance of the automatic machinery is more evident when it is impossible to operate manually underwater;

[0085] (e) The automatic hook device of the submersible sewage pump of the present application is composed of an automatic hook, a guide rail and a cross rail. The automatic hook is relatively detachable. By simply adjusting the position of the automatic hook on the cross rail and adjusting it up and down on the cross rail, the pump can be accurately lifted or placed in another pit. It is possible to use one automatic hook to lift multiple machines (submersible sewage pumps) or to use one automatic hook in multiple pits (water collection pits) by disassembling the automatic hook.

[0086] All documents mentioned in this application are considered to be included in the disclosure of this application as a whole, so that they can be used as the basis for modification when necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art can make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. An automatic hooking device for a submersible sewage pump, characterized in that: The invention comprises a hanger (11), a spring (12), a hook (13), and a shaft (14); the hook (13) is an eccentric structure, comprising an upper end portion and a lower end portion, the upper end portion being a rod-shaped structure; the hanger comprises a first side plate (111) and a second side plate (112), the second side plate (112) being arranged opposite to the first side plate (111); the upper end portion of the hook (13) is pivotally connected to the first side plate (111) via the shaft (14), and the shaft (14) The hook (13) also passes through the second side plate (112) so that the hook (13) is located between the first side plate (111) and the second side plate (112); the upper end portion of the hook (13) is also provided with a spring hole (131) and a pivot hole (132) for mounting the spring (12); one end of the spring (12) is mounted on the spring hole (131) on the upper end portion of the hook (13), and the other end of the spring (12) is mounted on the first side plate (111); The hook has a center of gravity, and in the length direction of the rod-shaped structure of the upper end portion of the hook (13), the pivot hole (132) through which the shaft (14) on the hook (13) passes is located between the center of gravity of the hook and the spring hole (131) on the hook (13); when the automatic hooking device is in an initial state, the weight of the hook generates a first moment in one direction on the shaft, and the component force of the spring elastic force in the vertical direction generates a second moment in the opposite direction to the first moment on the shaft; wherein the first moment is equal to the second moment, thereby realizing that the hook (13) does not rotate forward and backward around the shaft (14); The lower end of the hook is divided into a flat hook structure for limiting position.

2. The automatic hooking device according to claim 1, characterized in that: The spring hole (131) is located on the left side of the pivot hole (132), and the center of gravity of the hook is located on the right side of the pivot hole (132).

3. The automatic hooking device according to claim 1, characterized in that: The center line of the pivot hole of the shaft on the first side plate coincides with the center line of the first side plate.

4. The automatic hook-engaging device according to claim 1, characterized in that: The second moment is the product of the vertical component of the spring force and the horizontal force arm from the spring hook to the center of the hook axis at the hook, and the first moment is the product of the hook gravity and the horizontal force arm between the hook center of mass and the hook axis center.

5. The automatic hooking device according to claim 4, characterized in that: The outer edge of the lower end portion of the hook is flush with one side of the first and second side plates.

6. The automatic hook-engaging device according to claim 4, characterized in that: The hanger of the automatic hook device also includes a horizontal lifting rod, and the first and second side plates are provided with lifting rod holes, and the horizontal lifting rod passes through the upper ends of the first side plate and the second side plate in sequence.

7. The automatic hook-engaging device according to claim 6, characterized in that: The horizontal lifting rod is welded to the first side plate and the second side plate.

8. The automatic hook-engaging device according to claim 6, characterized in that: The center line of the lifting rod hole coincides with the center lines of the first and second side plates.

9. The automatic hook-engaging device according to claim 6, characterized in that: The automatic hooking device also includes a split pin, which is installed at both ends of the shaft.

10. An automatic hooking device for a submersible sewage pump, characterized in that: The device includes the automatic hooking device as described in claim 9, and the device also includes a transverse rail and a vertical guide rail.

11. The automatic hooking device for a submersible sewage pump according to claim 10, characterized in that: The cross rail is a square steel pipe with holes at both ends.

12. The automatic hooking device for a submersible sewage pump according to claim 11, characterized in that: The guide rail comprises a pair of square steel pipes arranged opposite to each other, and the guide rail is cooperatively connected with the cross rail so that the cross rail can slide up and down along the guide rail.

13. The automatic hooking device for a submersible sewage pump according to claim 12, characterized in that: The first and second side plates of the automatic hooking device are provided with cross-rail through holes which cooperate with the cross-rail, and the cross-rail passes through the first and second side plates in sequence.

14. The automatic hooking device for a submersible sewage pump according to claim 13, characterized in that: The transverse rail is parallel to the horizontal lifting rod, and the transverse rail is arranged below the horizontal lifting rod.

15. The automatic hooking device for a submersible sewage pump according to claim 14, characterized in that: The device also includes a bottom plate arranged below the guide rail, and a rib plate arranged above the bottom plate and resting against the guide rail.

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