Adjustable installation auxiliary tool for municipal road well lid

Abstract

This utility model relates to an adjustable installation auxiliary tool for municipal road manhole covers. It includes a trolley mechanism and a manhole cover gripping mechanism. The manhole cover gripping mechanism includes a cylindrical crossbeam and two hanging rods. A bearing seat is provided in the middle of the bottom rod, through which the crossbeam passes and is rotatably mounted. The two hanging rods are respectively installed at both ends of the crossbeam, and the lower end of each hanging rod has a hook for inserting into the lifting hole of the manhole cover and hooking it. The manhole cover gripping mechanism disclosed in this utility model consists of a crossbeam and two hanging rods. Its structure is simple, and the manhole cover is gripped by hooking the hooks of the hanging rods into the lifting hole of the manhole cover. During installation, this does not affect the alignment of the manhole cover with the manhole opening, nor does it affect the release of the manhole cover. Furthermore, the crossbeam is rotatably mounted on the bearing seat via a bearing, which not only improves the stability of the suspended manhole cover but also allows the manhole cover, lifted by the trolley frame, to rotate the crossbeam around the bearing seat under its own weight.

Description

Technical Field

[0001] This utility model relates to an adjustable installation auxiliary tool for municipal road manhole covers. Background Technology

[0002] To facilitate the installation and removal of manhole covers on municipal roads, many auxiliary tools have been designed on the market. For example, Chinese utility model patent specification CN 118387815 A discloses a portable trolley-type manhole cover opener, which includes a trolley mechanism and a manhole cover gripping mechanism. After the manhole cover is gripped by the manhole cover gripping mechanism, it is moved using the trolley mechanism. This prior art utilizes the lever principle to facilitate the handling and movement of manhole covers with large volume and weight. When installing the manhole cover, the position of the manhole cover can be adjusted at any time using the trolley mechanism to align it with the manhole opening, thereby achieving adjustable installation of the manhole cover. However, the manhole cover gripping mechanism of this prior art is relatively complex, and the grippers used to grip the manhole cover are distributed at the edge of the manhole cover. This not only affects the alignment of the manhole cover with the opening, but also makes it difficult to remove the grippers and release the manhole cover after it is lowered because the grippers are pressed down by the manhole cover. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable installation auxiliary tool for municipal road manhole covers, including a trolley mechanism and a manhole cover gripping mechanism mounted on the trolley mechanism. The trolley mechanism includes a frame and wheels. The frame includes a push rod and a base rod. The upper end of the push rod is equipped with a handle, and the lower end of the push rod is connected to the rear end of the base rod. The push rod is inclined to the base rod. The wheels are rotatably mounted at the connection between the push rod and the base rod. The manhole cover gripping mechanism includes a cylindrical crossbeam and two hanging rods. The base rod has a bearing seat in the middle. The crossbeam passes through the bearing seat and is rotatably mounted on the bearing seat through a bearing. The crossbeam is perpendicular to the base rod. The two hanging rods are respectively installed at both ends of the crossbeam. The lower end of each hanging rod is equipped with a hook for inserting into the lifting hole of the manhole cover and hooking the manhole cover.

[0004] The manhole cover gripping mechanism disclosed in this utility model consists of a crossbeam and two hanging rods. Its structure is simple, and the manhole cover is gripped by hooking the hooks on the hanging rods into the lifting holes. This method does not affect the alignment of the manhole cover with the manhole opening during installation, nor does it affect the release of the manhole cover. Furthermore, the crossbeam is rotatably mounted on a bearing seat via bearings, which not only improves the stability of the suspended manhole cover but also allows the manhole cover, lifted by the vehicle frame, to rotate the crossbeam around the bearing seat under its own weight, ensuring that the manhole cover remains horizontal and facilitating alignment adjustment between the manhole cover and the manhole opening. Attached Figure Description

[0005] Figure 1 A perspective view of the present invention is shown;

[0006] Figure 2The front view of this utility model is shown, in which the support leg is in the raised position;

[0007] Figure 3 It shows in Figure 2 This is a diagram showing the support foot in a lowered position after being pulled down.

[0008] Figure 4 It shows in Figure 1 A schematic diagram showing the manhole cover after separation, based on the above.

[0009] Figure 5 An exploded perspective view of this utility model is shown.

[0010] Reference numerals: 10 Wheel; 20 Push rod, 201 Handle; 30 Base rod, 301 Bearing seat, 302 Bearing; 40 Crossbeam, 401 Circular through hole, 402 Long strip through hole; 50 Hanging rod, 501 Hook; 60 Manhole cover, 601 Lifting hole; 70 Sleeve, 701 Main channel, 702 Side channel; 80 Support foot, 801 Pin; 90 Compression spring. Detailed Implementation

[0011] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution.

[0012] like Figures 1 to 5 The present invention relates to an adjustable installation auxiliary tool for municipal road manhole covers, comprising a trolley mechanism and a manhole cover gripping mechanism mounted on the trolley mechanism. The trolley mechanism includes a frame and wheels 10. The frame includes a push rod 20 and a base rod 30. A handle 201 is mounted on the upper end of the push rod 20, and the lower end of the push rod 20 is connected to the rear end of the base rod 30. The push rod 20 is inclined to the base rod 30. The wheels 10 are rotatably mounted at the connection between the push rod 20 and the base rod 30.

[0013] The manhole cover grabbing mechanism includes a cylindrical crossbeam 40 and two hanging rods 50;

[0014] The bottom rod 30 is provided with a bearing seat 301 in the middle, the crossbeam 40 passes through the bearing seat 301, and the crossbeam 40 is rotatably mounted on the bearing seat 301 through the bearing 302. The crossbeam 40 is perpendicular to the bottom rod 30.

[0015] The manhole cover 60 has two lifting holes 601;

[0016] The two hanging rods 50 are respectively installed at both ends of the crossbeam 40, and the lower end of each hanging rod 50 is provided with a hook 501 for inserting into the lifting hole 601 of the manhole cover and hooking the manhole cover 60.

[0017] The disclosed manhole cover grabbing mechanism consists of a crossbeam and two hanging rods. Its structure is simple, and the manhole cover is grabbed by hooking the hooks on the hanging rods into the lifting holes. This method does not affect the alignment of the manhole cover with the manhole opening during installation, nor does it affect the release of the manhole cover. Furthermore, the crossbeam is rotatably mounted on a bearing seat via bearings. This not only improves the stability of the suspended manhole cover but also allows the manhole cover, lifted by the vehicle frame, to rotate the crossbeam around the bearing seat under its own weight, ensuring the manhole cover remains horizontal and facilitating alignment adjustment between the manhole cover and the manhole opening.

[0018] The front end of the bottom rod 30 is provided with a sleeve 70 perpendicular to the bottom rod 30;

[0019] The sleeve 70 is equipped with a support foot 80 that can be raised and lowered. When the support foot 80 is lowered, it extends out of the front end of the bottom rod 30 towards the ground.

[0020] The sleeve 70 has a main channel 701 extending along the axis of the sleeve in a long strip shape on its side wall. The lower end of the main channel 701 has a side channel 702 extending circumferentially around the axis of the sleeve 70 and communicating with the main channel 701.

[0021] The upper end of the support leg 80 is provided with a pin 801 that passes through the main channel 701 and slides along the main channel 701;

[0022] When the support leg 80 descends, the pin 801 slides down to the lower end of the main channel 701. When the support leg 80 rotates, the pin 801, which has reached the lower end of the main channel 701, slides from the main channel 701 into the side channel 702.

[0023] A compression spring 90 is installed inside the sleeve 70, fitted around the support leg 80. The upper end of the compression spring 90 abuts against the pin 801, and the lower end of the compression spring abuts against the front end of the base rod 30. The compression spring ensures that the support leg always has an upward tendency. After the support leg rises, the pin abuts against the upper end of the main channel, keeping the support leg in the upward position. After the support leg descends and rotates, causing the pin to slide into the side channel, the pin abuts against the side channel, keeping the support leg in the downward position.

[0024] This technical solution incorporates a support foot at the front end of the base rod, allowing the frame to stand upright after bearing the manhole cover, preventing it from tipping over and facilitating adjustments during installation. The support foot is designed for vertical movement; when not in use, it can be raised and stored in a sleeve to prevent it from interfering with the movement of the trolley mechanism. When needed, it can be pulled down and rotated at a certain angle, allowing the pin to slide into the side channel. A compression spring ensures the support foot remains stably in the raised position.

[0025] One end of the crossbeam 40 has a circular through hole 401 for a hanging rod 50 to pass through, and the other end of the crossbeam 40 has an elongated through hole 402 for another hanging rod 50 to pass through. The length direction of the elongated through hole 402 is parallel to the length direction of the crossbeam 40, and the hanging rod 50 passing through the elongated through hole 402 can slide along the length direction of the elongated through hole 402. This technical solution uses a circular through hole to restrict the movement of the hanging rod and the manhole cover it hooks along the length direction of the crossbeam, and uses an elongated through hole to adjust the distance between the two hanging rods to accommodate the hooking of manhole covers with two different spacings of lifting holes.

Claims

1. An adjustable installation auxiliary tool for municipal road manhole covers, comprising a trolley mechanism and a manhole cover gripping mechanism mounted on the trolley mechanism, the trolley mechanism comprising a frame and wheels, the frame comprising a push rod and a base rod, the upper end of the push rod being fitted with a handle, the lower end of the push rod being connected to the rear end of the base rod, and the push rod being inclined relative to the base rod, the wheels being rotatably mounted at the connection between the push rod and the base rod, characterized in that: The manhole cover grabbing mechanism includes a cylindrical crossbeam and two hanging rods; The bottom rod is provided with a bearing seat in the middle, the crossbeam passes through the bearing seat, and the crossbeam is rotatably mounted on the bearing seat by bearings, and the crossbeam is perpendicular to the bottom rod; The two hanging rods are respectively installed at both ends of the crossbeam, and the lower end of each hanging rod is provided with a hook for inserting into the lifting hole of the manhole cover and hooking the manhole cover.

2. The adjustable installation auxiliary tool for municipal road manhole covers according to claim 1, characterized in that: The front end of the bottom rod is provided with a sleeve perpendicular to the bottom rod; The sleeve is equipped with a support foot that can be raised and lowered. When the support foot is lowered, it extends out of the front end of the bottom rod towards the ground. The sleeve has a main channel in the shape of an elongated strip extending along the axis of the sleeve, and a side channel extending circumferentially around the axis of the sleeve and communicating with the main channel at the lower end of the main channel. The upper end of the support leg is provided with a pin that passes through the main channel and slides along the main channel; When the support leg descends, the pin slides down to the lower end of the main channel. When the support leg rotates, the pin that reaches the lower end of the main channel slides from the main channel into the side channel. A compression spring is installed inside the sleeve and fitted onto the outside of the support foot. The upper end of the compression spring abuts against the pin, and the lower end of the compression spring abuts against the front end of the base rod.

3. The adjustable installation auxiliary tool for municipal road manhole covers according to claim 2, characterized in that: One end of the crossbeam is provided with a circular through hole for a hanging rod to pass through, and the other end of the crossbeam is provided with an elongated through hole for another hanging rod to pass through. The length direction of the elongated through hole is parallel to the length direction of the crossbeam, and the hanging rod passing through the elongated through hole can slide along the length direction of the elongated through hole.

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