Well lid pressure testing machine

Abstract

The utility model discloses a manhole cover pressure testing machine, which relates to the technical field of manhole cover pressure resistance testing, and particularly comprises a frame body for placing a manhole cover and a mounting seat body arranged on one side of the frame body, and a rack is vertically mounted on the mounting seat body; a supporting arm is horizontally arranged at the top of the rack, one end of the supporting arm is rotationally connected with the top of the rack, and the supporting arm can be transversely arranged above the rack body by rotating the supporting arm; and a locking mechanism for positioning the support arm is also arranged at the top of the rack. When the well lid detection device is used, the well lid can be directly placed on the annular support, the well lid can be conveniently placed in the annular support, and the well lid and the well lid base can be placed on the annular support together for detection; when the well lid is placed in, the supporting arm can be moved away from the upper portion of the annular support, the upper portion of the annular support is not shielded, the well lid can be directly placed in conveniently, then the supporting arm is rotated to the upper portion of the well lid, the hydraulic cylinder can be controlled for detection, operation is easy, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover pressure testing, in particular to a manhole cover pressure testing machine. Background Technique

[0002] The manhole cover is a national standard part. When producing the manhole cover, it is necessary to conduct a pressure test on the manhole cover. The manhole cover pressure testing machine is a device specifically used to test the bearing capacity of the manhole cover. It can simulate the pressure conditions that the manhole cover may face under various actual use conditions to ensure the safety and durability of the manhole cover. This testing machine is usually designed according to relevant industry or national standards, such as CJ / T 3012-1993 "Cast Iron Inspection Manhole Cover", CJ / T 121-2000 "Recycled Resin Composite Material Inspection Manhole Cover", and GB / T 23857-2009 "Inspection Manhole Cover", etc., to ensure that the manhole cover can meet specific bearing requirements and safety standards.

[0003] In the test of the manhole cover pressure resistance, the hydraulic cylinders of most manhole cover pressure testing machines are located above the manhole cover. When moving the manhole cover up and down, the hydraulic cylinders will hinder the up and down movement of the manhole cover.

[0004] For example, a digital manhole cover pressure testing machine proposed in the patent application number "202111020770.9" has a structure in which sliding columns are fixedly connected to the edge position of the top of the base, and a pressure device is fixedly connected to the top of the sliding columns. It has the problem of inconvenient placement of the manhole cover, that is, the area around the placement of the manhole cover is surrounded by the sliding columns, and the pressure device is arranged above the manhole cover. Due to the large weight of the manhole cover, when placing the manhole cover, the sliding columns and the pressure device will inevitably cause inconvenience to the placement of the manhole cover. Therefore, we propose a manhole cover pressure testing machine to solve the above technical problems. Content of the Utility Model

[0005] Aiming at the deficiency of the existing manhole cover pressure testing machine in inconvenient placement of the manhole cover, the utility model provides a manhole cover pressure testing machine, which has the advantage of rotating the hydraulic cylinder to another place so that the manhole cover will not contact the hydraulic cylinder when being placed, and solves the problems raised in the above background technique.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] A manhole cover pressure testing machine is designed, which includes a frame for placing the manhole cover, and a mounting seat body arranged on one side of the frame. A frame is vertically installed on the mounting seat body;

[0008] A support arm is horizontally arranged at the top of the frame. One end of the support arm is rotatably connected to the top of the frame. Rotating the support arm can make it lie horizontally above the frame;

[0009] A locking mechanism for positioning the support arm is also provided at the top of the frame.

[0010] Wherein, a hydraulic cylinder seat located above the center of the manhole cover is installed at one end of the support arm far from the frame. A hydraulic cylinder is provided inside the hydraulic cylinder seat, a pressure sensor is provided at the bottom of the hydraulic cylinder, and the pressure sensor is connected to a display device.

[0011] Preferably, a pressing plate is provided below the pressure sensor.

[0012] Preferably, the display device includes a controller connected to the pressure sensor, and the controller is connected to a display;

[0013] A hydraulic station is also provided on the mounting seat body. The hydraulic station is connected to the hydraulic cylinder through a pipeline, and the hydraulic station is connected to the controller.

[0014] Preferably, the frame body includes an annular support. A plurality of support legs are provided at the bottom of the annular support. The mounting seat body is connected to the support legs. A plurality of limiting mechanisms are provided at the edge of the annular support. The manhole cover is placed in the space surrounded by the plurality of limiting mechanisms.

[0015] Preferably, the limiting mechanism includes a plurality of blocks provided at the edge of the annular support. The manhole cover is coaxially located on the annular support and placed in the space surrounded by the plurality of blocks.

[0016] Preferably, the block is movable relative to the annular support. A strip-shaped plate is connected to the side of each block far from the center of the annular support, and the other ends of the strip-shaped plates are respectively connected to an adjusting seat;

[0017] A plurality of strip-shaped seats corresponding to the strip-shaped plates are installed at the edge of the annular support. An adjusting opening radially provided with the annular support is provided at the top of each strip-shaped seat;

[0018] Wherein, a slider is provided below each adjusting seat. The slider is movably placed in the adjusting opening. A bolt penetrates through the slider and the adjusting seat, and the bolt extends below the strip-shaped seat and is locked by a nut.

[0019] Preferably, the locking mechanism includes an L-shaped frame installed on the side of the support arm near the frame end. A friction disc is also coaxially provided at the top of the frame. The L-shaped frame extends to the side of the friction disc and there is a certain distance between them;

[0020] An abutting screw is threadedly connected to the side of the L-shaped frame far from the friction disc. A rotating handwheel is installed at the end of the abutting screw far from the frame, and an abutting seat is provided at the end near the frame. Rotating the abutting screw can drive the abutting seat to abut against the surface of the friction disc.

[0021] Compared with the prior art, when the utility model is in use, the manhole cover can be directly placed on the annular support, which is convenient to put in. Moreover, it can be placed on the annular support together with the manhole cover seat for detection. When putting in the manhole cover, the support arm can be moved away from above the annular support to make the upper part of the annular support unobstructed, which is convenient to directly put in the manhole cover. Then, the support arm is rotated above the manhole cover to control the hydraulic cylinder for detection. The operation is simple and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the combination of the utility model and the manhole cover Figure 1 .

[0023] Figure 2 is a schematic structural diagram of the combination of the utility model and the manhole cover Figure 2 .

[0024] Figure 3 is a schematic structural diagram of the utility model after removing the manhole cover.

[0025] Figure 4 is a schematic structural diagram of the specific structure of the limit mechanism in the utility model.

[0026] Figure 5 is a schematic structural diagram of the complete utility model.

[0027] In the figure: 1, annular support; 2, stop block; 3, adjusting seat; 4, strip seat; 5, adjusting opening; 6, support leg; 7, hydraulic station; 8, frame; 9, rotating handwheel; 10, L-shaped frame; 11, support shaft; 12, support arm; 13, hydraulic cylinder; 14, hydraulic cylinder seat; 15, pressing plate; 16, mounting seat body; 17, strip plate; 18, slider; 19, backing plate; 20, friction disc; 21, tightening screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a manhole cover pressure testing machine, including a frame body, and the manhole cover is placed inside the frame body for fixation. As Figure 1As shown in the figure, the frame body includes an annular support 1. Multiple support legs 6 are provided at the bottom of the annular support 1. Multiple limiting mechanisms are provided at the edge of the annular support 1. The manhole cover is placed in the space enclosed by the multiple limiting mechanisms. The limiting mechanism includes multiple stoppers 2 provided at the edge of the annular support 1. The manhole cover is coaxially located on the annular support 1 and placed in the space enclosed by the multiple stoppers 2, that is, the space enclosed by the multiple stoppers 2 is coaxially arranged with the annular support 1, and the enclosed space is just large enough to accommodate a manhole cover;

[0030] To facilitate the adjustment of the stoppers, further improvement is made, that is, each stopper 2 is movable relative to the annular support 1. A strip plate 17 is connected to the side of each stopper 2 away from the center of the annular support 1. The other ends of the strip plates 17 are respectively connected to the adjusting seats 3, as Figure 1 shown, the adjusting seats 3 are distributed outside the annular support 1;

[0031] Multiple strip seats 4 corresponding to the strip plates 17 are installed at the edge of the annular support 1. An adjusting opening 5 radially arranged with the annular support 1 is provided at the top of each strip seat 4;

[0032] Wherein, a slider 18 is provided below each adjusting seat 3. The slider 18 is movably placed in the adjusting opening 5 and can slide along the adjusting opening 5. In this way, the distance that the stopper 2 extends into the annular support 1 can be adjusted, so that the diameter of the space enclosed by the stoppers 2 can be changed, and the limiting operation for manhole covers with different outer diameters can be satisfied;

[0033] The slider 18 and the adjusting seat are locked by bolts. A bolt penetrates through the slider 18 and the adjusting seat 3 and extends below the strip seat 4. The width of the adjusting seat 3 is greater than the width of the adjusting opening 5, so that the adjusting seat 3 straddles above the adjusting opening 5. The height of the slider 18 is less than the depth of the adjusting opening 5, and a backing plate 19 is penetrated below the bolt. A nut for locking the backing plate 19 is provided at the bottom of the bolt. In this way, when the nut is tightened, it can tightly press on the backing plate 19, so that the adjusting seat 3 can be fixed above the strip seat 4.

[0034] In this application, an installation seat body 16 is provided on one side of the frame body, as Figure 2 shown, the installation seat body 16 is connected to the support leg 6, and the installation seat body 16 and other support legs jointly support on the ground. A frame 8 is vertically installed on the installation seat body 16;

[0035] A support arm 12 is horizontally provided at the top of the frame 8. One end of the support arm 12 is rotatably connected to the top of the frame 8, as Figure 1 shown. Specifically, a support shaft 11 is provided at the top of the frame 8. One end of the rotating support arm 12 is rotatably connected to the support shaft 11 through a bearing. The rotating support arm 12 can be placed horizontally above the frame body. Of course, by continuing to rotate the rotating support arm 12, it can be moved away from above the frame body;

[0036] Specifically, during actual use, the support arm is rotated above the manhole cover. At one end of the support arm 12 away from the frame 8, a hydraulic cylinder 13 located above the center of the manhole cover is installed. The hydraulic cylinder 13 is arranged in a hydraulic cylinder seat 14 at the end of the support arm 12. A pressure sensor is provided at the bottom of the hydraulic cylinder 13. To protect the pressure sensor, a pressing plate 15 can be provided below the pressure sensor. At this time, the hydraulic cylinder 13 can be controlled to extend, so that the hydraulic cylinder 13 drives the pressing plate 15 to press on the top of the manhole cover;

[0037] It should be noted that after the test is completed, if a next test is to be carried out, the support arm 12 needs to be moved away from above the manhole cover, that is, the upper part of the annular support 1 is not blocked by the hydraulic cylinder, so that it is convenient to take out the damaged manhole cover and then convenient to put in a new manhole cover. As Figure 1 and Figure 2 shown, during the actual application process, not only can the manhole cover be directly placed on the annular support 1, but also the manhole cover seat can be placed on the annular support 1 together for detection.

[0038] The control part of the present application is introduced below. As Figure 5 shown, the display is arranged on the workbench, and at the same time the controller is also arranged inside the workbench. The controller is a PLC logic controller or a host. The controller is respectively connected to the hydraulic station 7, the pressure sensor, and the display through wires and data lines. During the actual application process, the hydraulic station 7 can be arranged on the mounting seat body 16, and the hydraulic station 7 is connected to the hydraulic cylinder 13 through a pipeline;

[0039] After the operator places the manhole cover on the annular support 1 and at the same time moves the support arm 12 above the manhole cover, the hydraulic cylinder 13 can be controlled to drive the pressing plate 15 to perform a pressure resistance test on the manhole cover, and the pressure sensed by the pressure sensor is displayed in real time on the display.

[0040] Furthermore, in order to make the support arm more stable and not shake back and forth, a locking mechanism for positioning the support arm 12 is also provided on the top of the frame 8;

[0041] The locking mechanism includes an L-shaped frame 10 installed on the side of the support arm 12 close to one end of the frame 8. A friction disc 20 is also coaxially provided on the top of the frame 8. The L-shaped frame 10 extends to the side of the friction disc 20 and there is a certain distance between the two. A tightening screw 21 is threadedly connected to the side of the L-shaped frame 10 away from the friction disc 20. A rotating handwheel 9 is installed at one end of the tightening screw 21 away from the frame 8, and a abutting seat is provided at one end close to the frame 8. Rotating the tightening screw 21 can drive the abutting seat to abut on the surface of the friction disc 20. A rubber block can be provided on the surface of the abutting seat, and knurling or other anti-slip texture structures can be arranged on the side of the friction disc 20. Therefore, whether the support arm is above the manhole cover or on one side of the manhole cover, it is locked by rotating the handwheel 9, which can avoid the shaking of the support arm.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A manhole cover pressure testing machine, characterized in that: It comprises a frame for placing a manhole cover, and a mounting seat (16) arranged on one side of the frame, and a frame (8) is vertically mounted on the mounting seat (16); A support arm (12) is horizontally provided on the top of the frame (8), one end of the support arm (12) is rotatably connected to the top of the frame (8), and the support arm (12) can be rotated to be placed horizontally above the frame body; A locking mechanism for positioning the support arm (12) is also provided on the top of the frame (8); A hydraulic cylinder seat (14) located above the center of the manhole cover is installed at one end of the support arm (12) away from the frame (8), a hydraulic cylinder (13) is arranged in the hydraulic cylinder seat (14), a pressure sensor is arranged at the bottom of the hydraulic cylinder (13), and the pressure sensor is connected to the display device.

2. A manhole cover pressure testing machine according to claim 1, characterized in that: A pressure plate (15) is provided below the pressure sensor.

3. A manhole cover pressure testing machine according to claim 2, characterized in that: The display device includes a controller connected to the pressure sensor, and the controller is connected to the display; A hydraulic station (7) is also provided on the mounting base (16); the hydraulic station (7) is connected to the hydraulic cylinder (13) via a pipeline; and the hydraulic station (7) is connected to a controller.

4. A manhole cover pressure testing machine according to claim 3, characterized in that: The frame body comprises an annular support (1), a plurality of support legs (6) are provided at the bottom of the annular support (1), a mounting seat body (16) is connected to the support legs (6), a plurality of limiting mechanisms are provided at the edge of the annular support (1), and the manhole cover is placed in a space surrounded by the plurality of limiting mechanisms.

5. A manhole cover pressure testing machine according to claim 4, characterized in that: The limiting mechanism comprises a plurality of stoppers (2) arranged on the edge of the annular support (1); the manhole cover is coaxially seated on the annular support (1) and is placed in a space surrounded by the plurality of stoppers (2).

6. A manhole cover pressure testing machine according to claim 5, characterized in that: The stopper (2) and the annular support (1) are movable, and a strip plate (17) is connected to one side of each stopper (2) away from the center of the annular support (1), and the other end of the strip plate (17) is respectively connected to the adjustment seat (3); A plurality of strip seats (4) are mounted on the edge of the annular support (1) at positions corresponding to the strip plates (17), and each strip seat (4) is provided with an adjustment port (5) radially arranged with respect to the annular support (1) at the top; A slider (18) is provided below each adjustment seat (3), and the slider (18) is movably placed in the adjustment opening (5). A bolt is provided through the slider (18) and the adjustment seat (3), and the bolt extends to the bottom of the strip seat (4) and is locked by a nut.

7. A manhole cover pressure testing machine according to claim 6, characterized in that: The locking mechanism comprises an L-shaped frame (10) mounted on the side of the support arm (12) close to one end of the frame (8), a friction disc (20) is coaxially arranged on the top of the frame (8), and the L-shaped frame (10) extends to the side of the friction disc (20) with a certain distance between the two. A tightening screw rod (21) is connected to the inner thread of the side of the L-shaped frame (10) away from the friction disk (20), a rotating hand wheel (9) is installed at the end of the tightening screw rod (21) away from the frame (8), and a stop seat is provided at the end close to the frame (8). The tightening screw rod (21) can be rotated to drive the stop seat to abut against the surface of the friction disk (20).

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