Well lid pressure testing machine

Abstract

The utility model discloses a manhole cover pressure testing machine, which belongs to the technical field of manhole cover pressure detection equipment, and comprises a workbench, the top of the workbench is provided with a through groove, the inner wall of the through groove is slidably connected with a manhole cover body, and the peripheral side of the manhole cover body is provided with a left coaming and a right coaming which are used for protection; an inverted-U-shaped connecting frame is welded to moving parts of the two longitudinal linear motors, and a penetrating type rectangular groove is formed in the top of the connecting frame; the fixed part of the transverse linear motor is fixed with the inner wall of the connecting frame, the bottom of the moving part of the transverse linear motor is movably connected with a moving plate, the moving plate is fixed with the connecting box through a connected hydraulic rod, and the bottom of the connecting box is connected with a test pressure head for testing the pressure of the well lid. According to the utility model, not only can pressure tests be carried out on different positions of the well lid body, but also scraps can be shielded through the arranged coaming, so that the detection quality of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of manhole cover pressure testing equipment, and in particular, a manhole cover pressure testing machine. Background Technology

[0002] Urban construction involves numerous underground pipelines, such as sewers, underground gas pipelines, water supply pipelines, power pipelines, communication pipelines, and defense pipelines. The manhole covers covering the outlets of these pipelines are commonly referred to as kiln manhole covers. Generally, after the manhole covers are manufactured, they undergo pressure testing to determine their quality. However, existing testing machines for manhole covers typically only test fixed points on the cover, resulting in a limited and inaccurate measurement.

[0003] A search revealed, for example (Authorization Announcement No. CN218036146U), a manhole cover pressure testing machine, comprising a frame, a feeding mechanism, a protective mechanism, and a pressure mechanism. The frame consists of a base plate, connecting columns, and an upper plate. The feeding mechanism consists of a slide rail, a slide box, several limit rods, and a second through hole. The protective mechanism consists of an mounting cylinder and a plane mirror, with the plane mirror fixedly installed inside the mounting cylinder. A convex lens is also fixedly installed above the plane mirror inside the mounting cylinder. The pressure mechanism consists of a hydraulic cylinder and a pressure head. This device solves the problem that existing manhole cover pressure testing methods cannot protect personnel on site. However, the device still suffers from a single pressure testing point, leading to inaccurate data and reducing the device's testing reliability. Utility Model Content

[0004] The purpose of this invention is to provide a manhole cover pressure testing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a manhole cover pressure testing machine, comprising:

[0006] The workbench has a through groove at the top, and the manhole cover body is slidably connected to the inner wall of the groove. The manhole cover body has a left and right side panel for protection.

[0007] Two longitudinal linear motors for adjustment, the moving parts of the two longitudinal linear motors are welded with an inverted U-shaped connecting frame, and the top of the connecting frame is provided with a through rectangular groove;

[0008] The horizontal linear motor has a fixed part that is fixed to the inner wall of the connecting frame. The bottom of the moving part of the horizontal linear motor is movably connected to a moving plate. The moving plate is fixed to the connecting box via a connected hydraulic rod. The bottom of the connecting box is detachably connected to a test pressure head for manhole cover pressure testing.

[0009] As a preferred embodiment, four symmetrical arc-shaped connecting plates are welded to the bottom of the workbench, and the bottom of the four connecting plates is welded to the top of the base plate.

[0010] As a preferred embodiment, the top of the base plate is screwed with four telescopically adjustable vertical electric actuators. The moving parts of the four vertical electric actuators are fixed with annular support plates. The side walls of the support plates are slidably connected to the inner walls of the through groove, and the top of the support plates abuts against the bottom of the manhole cover body.

[0011] As a preferred embodiment, the top of the workbench is also provided with a circular groove, the inner wall of which is slidably connected to the left and right side panels, and the ends of the left and right side panels are slidably connected.

[0012] As a preferred embodiment, the moving part of the transverse linear motor is screwed to a multi-stage electric actuator, and the fixed part of the multi-stage electric actuator is movably connected to the inner wall of the rectangular groove.

[0013] In a preferred embodiment, the moving part of the multi-stage electric actuator passes through the moving part of the transverse linear motor and is connected to the top of the moving plate, while the bottom of the moving plate is screwed to the fixing part of the hydraulic rod.

[0014] As a preferred embodiment, the top of the movable plate is also fixed with two smooth outer circumference rods. The sidewalls of the two rods are slidably connected to the moving part of the transverse linear motor, and the two rods are symmetrical to the multi-stage electric actuator.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] This manhole cover pressure testing machine has two parallel longitudinal linear motors on the top of the worktable. A connecting frame is fixed to the moving part of each longitudinal linear motor, and a transverse linear motor is fixed to the inner wall of the connecting frame. A multi-stage electric actuator is fixed to the moving part of the transverse linear motor. The moving part of the multi-stage electric actuator passes through the moving part of the transverse linear motor and connects to a moving plate. A hydraulic rod is also connected to the bottom of the moving plate, and a connecting box is welded to the moving part of the hydraulic rod. The connecting box is detachably connected to a test pressure head. Under the action of the above structure, the test pressure head performs pressure testing on the manhole cover body. Combined with transverse and longitudinal adjustments, the pressure testing of the manhole cover body is more comprehensive, improving the data validity of the device.

[0017] This manhole cover pressure testing machine has a through-slot in the middle of the worktable. A support plate is slidably connected to the inner wall of the through-slot. Four telescopic vertical electric actuators are fixed to the bottom of the support plate. The fixed part of the vertical electric actuator is connected to the top of the base plate. The base plate is fixed to the bottom of the worktable through a welded connecting plate. The top of the support plate abuts against the manhole cover body. With the setting of the vertical electric actuators, the height of the manhole cover body inside the through-slot can be adjusted to facilitate pressure testing.

[0018] Furthermore, a groove is provided around the perimeter of the through groove, and a left and right side plate are slidably connected to the inner wall of the groove. The connecting end faces of the left and right side plates are provided with slide rails and sliders. The connection between the left and right side plates is completed by the sliding connection of the sliders and slide rails. The side plates can protect the manhole cover body during pressure testing, thus improving the practicality of the device.

[0019] This device solves the problem that existing equipment cannot perform pressure tests on different locations of the manhole cover, improving the accuracy of data calculation and enhancing the device's testing quality. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a manhole cover pressure testing machine according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the workbench of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the base plate connection of this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting frame of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the movable plate connection of this utility model;

[0026] Figure 6 This is a schematic diagram of the bottom structure of the movable plate of this utility model;

[0027] Figure 7 For practical purposes Figure 1 Enlarged view of the structure at point A in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the diagram: 1. Workbench; 2. Left side panel; 3. Longitudinal linear motor; 4. Connecting frame; 5. Manhole cover body; 6. Groove; 7. Vertical electric actuator; 8. Support plate; 9. Connecting plate; 10. Base plate; 11. Rectangular groove; 12. Multi-stage electric actuator; 13. Horizontal linear motor; 14. Round rod; 15. Hydraulic rod; 16. Test pressure head; 17. Connecting box; 18. Right side panel; 19. Moving plate. Detailed Implementation

[0030] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0031] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0032] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0033] An embodiment of a manhole cover pressure testing machine, such as Figures 1 to 7 As shown,

[0034] include:

[0035] The workbench 1 has four legs welded to its bottom. These legs support the workbench 1 and reduce the bending of operators when inspecting the manhole cover body 5, making it easier to use. The top of the workbench 1 has a through groove, and the manhole cover body 5 is slidably connected to the inner wall of the groove. The bottom of the manhole cover body 5 abuts against a support plate 8. Four symmetrical vertical electric actuators 7 are welded to the bottom of the support plate 8. The fixing part of the vertical electric actuators 7 is screwed to a base plate 10. An arc-shaped connecting plate 9 is also welded to the top periphery of the base plate 10. The top of the connecting plate 9 is welded to the top of the workbench 1. By controlling the extension and retraction of the moving part of the vertical electric actuator 7, the connected support plate 8 is moved inside the groove, thereby completing the position adjustment of the manhole cover body 5.

[0036] The manhole cover body 5 has an annular groove 6 around its periphery. The inner wall of the groove 6 is slidably connected to a left side plate 2 and a right side plate 18 for protection. The depth of the groove 6 is sufficient to fix the left side plate 2 and the right side plate 18. The left side plate 2 and the right side plate 18 are spliced ​​together to form a ring. A long strip-shaped slider is provided at the end of the left side plate 2, and a long strip-shaped slide rail is provided at the end of the right side plate 18. The slide rail is slidably connected to the slider, so that the left side plate 2 and the right side plate 18 can be spliced ​​within the groove 6. When the manhole cover body 5 is subjected to pressure test, it is avoided that the manhole cover body 5 will break and the debris will splash out, thus improving the safety of the device.

[0037] Two longitudinal linear motors 3 are used for adjustment. The two longitudinal linear motors 3 are mounted on the top of the worktable 1, and the two longitudinal linear motors 3 are symmetrically arranged in the through slots opposite each other. The moving parts of the two longitudinal linear motors 3 are welded with inverted U-shaped connecting frames 4. The top of the connecting frame 4 is provided with a through rectangular slot 11. The connecting frame 4 is located above the groove 6, the left side plate 2 and the right side plate 18.

[0038] A transverse linear motor 13 is fixed to the inner wall of the connecting frame 4. The moving part of the transverse linear motor 13 is screwed to a multi-stage electric push rod 12. The moving part of the multi-stage electric push rod 12 passes through the moving part of the transverse linear motor 13 and is connected to the moving plate 19. Two round rods 14 are also fixed to the top of the moving plate 19. The side walls of the round rods 14 are slidably connected to the moving part of the transverse linear motor 13, and the two round rods 14 are symmetrical to the multi-stage electric push rod 12.

[0039] The bottom of the movable plate 19 is screwed with a hydraulic rod 15. The movable part of the hydraulic rod 15 is fixed with a connecting box 17. The connecting box 17 is designed to facilitate replacement when pressure testing the manhole cover body 5. The bottom of the connecting box 17 is detachably connected to a test pressure head 16 for manhole cover pressure testing. With the arrangement of the longitudinal linear motor 3, the transverse linear motor 13, the multi-stage electric actuator 12 and the hydraulic rod 15, the manhole cover body 5 fixed on the top of the support plate 8 can be subjected to pressure tests at different points, improving the accuracy of the device's data calculation.

[0040] The longitudinal linear motor 3, the manhole cover body 5, the vertical electric actuator 7, the multi-stage electric actuator 12, the transverse linear motor 13, and the hydraulic rod 15 are all conventional instruments. Their working principles, dimensions, and models are irrelevant to the function of this application, so they will not be described in detail. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0041] Working principle

[0042] When using this manhole cover pressure testing machine, first place the manhole cover body 5 to be tested on the top of the workbench 1, move the manhole cover body 5 to the top of the support plate 8 and align it with the inner wall of the through groove. At this time, control the retraction of the moving part of the vertical electric push rod 7 so that the top of the manhole cover body 5 is flush with the top of the workbench 1.

[0043] Then, the right side plate 18 is placed inside the groove 6, and the left side plate 2 is connected to the right side plate 18 and the groove 6 through the connection of the slider and the slide rail. Then, the movement of the longitudinal linear motor 3 is controlled to drive the fixed connecting frame 4 to move, and the movement of the transverse linear motor 13 is synchronized. The movement of its moving part is controlled to adjust laterally, and the multi-stage electric push rod 12 is controlled to drive the connected moving plate 19 to move. Finally, the moving part of the hydraulic rod 15 is controlled to extend, and the connected test pressure head 16 is driven to abut against the manhole cover body 5 to complete the pressure test on different positions of the manhole cover body 5.

[0044] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manhole cover pressure testing machine, characterized in that, include: The workbench (1) has a through groove on its top and a manhole cover body (5) slidably connected to the inner wall of the groove. The manhole cover body (5) has a left side panel (2) and a right side panel (18) for protection on its periphery. Two longitudinal linear motors (3) for adjustment, the moving parts of the two longitudinal linear motors (3) are welded with an inverted U-shaped connecting frame (4), and the top of the connecting frame (4) is provided with a through rectangular groove (11). A horizontal linear motor (13) is fixed to the inner wall of the connecting frame (4). A moving plate (19) is movably connected to the bottom of the moving part of the horizontal linear motor (13). The moving plate (19) is fixed to the connecting box (17) through a connected hydraulic rod (15). A test pressure head (16) for well cover pressure testing is detachably connected to the bottom of the connecting box (17).

2. The manhole cover pressure testing machine according to claim 1, characterized in that: The bottom of the workbench (1) is welded with four symmetrical arc-shaped connecting plates (9), and the bottom of the four connecting plates (9) is welded to the top of the base plate (10).

3. The manhole cover pressure testing machine according to claim 2, characterized in that: The top of the base plate (10) is screwed with four telescopically adjustable vertical electric actuators (7). The moving parts of the four vertical electric actuators (7) are fixed with an annular support plate (8). The side wall of the support plate (8) is slidably connected to the inner wall of the through groove, and the top of the support plate (8) abuts against the bottom of the manhole cover body (5).

4. The manhole cover pressure testing machine according to claim 2, characterized in that: The top of the workbench (1) is also provided with a circular groove (6), the inner wall of the groove (6) is slidably connected to the left side panel (2) and the right side panel (18), and the ends of the left side panel (2) and the right side panel (18) are slidably connected.

5. A manhole cover pressure testing machine according to claim 1, characterized in that: The moving part of the transverse linear motor (13) is screwed to a multi-stage electric actuator (12), and the fixed part of the multi-stage electric actuator (12) is movably connected to the inner wall of the rectangular groove (11).

6. A manhole cover pressure testing machine according to claim 5, characterized in that: The moving part of the multi-stage electric actuator (12) passes through the moving part of the transverse linear motor (13) and is connected to the top of the moving plate (19). The bottom of the moving plate (19) is screwed to the fixing part of the hydraulic rod (15).

7. A manhole cover pressure testing machine according to claim 6, characterized in that: The top of the movable plate (19) is also fixed with two smooth outer circumference round rods (14). The side walls of the two round rods (14) are slidably connected to the moving part of the transverse linear motor (13), and the two round rods (14) are symmetrical to the multi-stage electric push rod (12).

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