CN204491417U - A kind of bridge construction anti-drop device - Google Patents

Abstract

The utility model provides an anti-falling device for bridge construction, which includes a support column and a telescopic rod. The telescopic rod includes a first rod body, a second rod body, a screw rod, a helical gear pair and a rocker. The output shaft of the driven wheel is rotatably connected to the plate body, the bottom of the screw rod is inserted into the first rod body and connected with the output shaft of the driven wheel of the helical gear pair, the rocker is inserted into the first rod body and connected with the helical gear pair The output shaft of the driving wheel is connected, the inner wall of the second rod body is provided with an internal thread, the outer wall of the screw rod is provided with an external thread, the top of the screw rod is inserted into the second rod body and the internal thread of the second rod body cooperates with the external thread of the screw rod connection, the inner side of the first rod body is respectively fixed with a plurality of protrusions, a board is rested on the protrusions, the top of the first rod body is provided with a railing, and the bottom end of the support column is respectively provided with a jack. The beneficial effect is that it is safe to use, the height of the board body can be adjusted up and down, and it is suitable for various terrains.

Description

An anti-drop device for bridge construction

technical field

The utility model relates to the technical field of bridge construction equipment, in particular to an anti-drop device for bridge construction.

Background technique

According to the design content, bridge construction refers to the process of building bridges, mainly referring to bridge construction technology and construction organization. Safety is the primary issue that needs to be considered in the process of bridge construction.

There are also many safety protection measures used in the bridge construction process, and the anti-fall device is one of them. The existing anti-fall device structure is relatively simple, and most of them are in the form of scaffolding. However, scaffolding is generally inconvenient for construction personnel to climb. Scaffolding can only be climbed from the side. Such climbing often has certain safety hazards. Construction workers often fall to the ground due to weather conditions or fatigue.

In view of this, Chinese patent 201420135607.6 discloses a bridge construction anti-falling device, including a frame body, which is provided with multi-layer guardrails, a support frame is provided between adjacent guardrails, and a climbing ladder is provided on one side of the frame body , There are multiple diagonal braces arranged between the ladder and the frame body. The bridge construction anti-fall device has a reasonable structural design, not only has the anti-fall function, but also has the effect of easy climbing. But it has the following problems: 1. The height of the frame cannot be fine-tuned, and it is not suitable for places with uneven terrain; 2. The height of the bottom plate cannot be adjusted up and down according to needs.

Utility model content

The problem to be solved by the utility model is to provide a bridge construction anti-falling device that is safe to use, can adjust the height of the plate body up and down, and is suitable for various terrains.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a bridge construction anti-falling device, including four support columns, the four support columns are connected by connecting rods, which is characterized in that: the four support columns The top ends of the support columns are all provided with telescopic rods, the telescopic rods include a first rod body, a second rod body, a screw, a helical gear pair and a rocker, and the first rod body and the second rod body are hollow tubes, so The bottom end of the first rod body is connected to the support column, and a plate body rotatably connected with the output shaft of the driven wheel of the helical gear pair is arranged in the first rod body, and the bottom of the screw rod is inserted into the first rod body. A rod body is connected with the output shaft of the driven wheel of the helical gear pair, the rocker is inserted into the first rod body and connected with the output shaft of the driving wheel of the helical gear pair, and the second rod body The inner wall of the screw rod is provided with an internal thread, the outer wall of the screw rod is provided with an external thread, the top of the screw rod is inserted into the second rod body and the internal thread of the second rod body is matched with the external thread of the screw rod connected, the inner wall of the first rod body is provided with at least one positioning groove along the vertical direction, and the outer wall of the second rod body is provided with a positioning block that is slidably connected to the positioning groove; on the inner side of the first rod body A plurality of protrusions are respectively fixedly arranged, and a board body rests on the protrusions, a railing is disposed on the top of the first rod body, and a jack is respectively disposed on the bottom ends of the four support columns.

Preferably, in the above-mentioned fall prevention device for bridge construction, a storage battery is arranged on the support column.

Preferably, in the above-mentioned fall prevention device for bridge construction, a lamp body is provided on the railing, and the lamp body is electrically connected to the storage battery.

Preferably, in the above-mentioned fall prevention device for bridge construction, the number of protrusions provided on each telescopic rod is four, and the distance between two adjacent protrusions is 5cm.

Preferably, in the above-mentioned bridge construction fall prevention device, the number of the positioning grooves is two.

The technical effect of the utility model is mainly reflected in that a jack is respectively arranged at the bottom of the four supporting columns, and the height of the jack can be adjusted when the terrain is uneven, so that the utility model remains horizontal, so the utility model is applicable to various terrains ; The inner side of the first rod body is respectively fixed with several bumps, and the board body can be rested on different bumps to achieve the effect of adjusting the height of the board body; the top of the first rod body is provided with a railing, which can be adjusted by adjusting the telescopic The height of the railing is adjusted according to the length of the rod, which ensures the personal safety of the workers; the user shakes the rocker to drive the helical gear pair to rotate, which drives the screw to rotate, because the positioning block is stuck in the positioning groove, thus preventing the second rod from connecting with the screw. Rotate together, can only move up and down along the positioning groove, thereby realizing the height adjustment of the telescopic rod, this height adjustment method is more convenient to use.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of expansion rod in the utility model;

Fig. 3 is the structural representation of the helical gear pair in the utility model;

Fig. 4 is a schematic diagram of the structure along the direction A-A in Fig. 2 .

Detailed ways

Below in conjunction with the accompanying drawings, the specific implementation of the present invention will be further described, so that the technical solution of the present utility model is easier to understand and grasp.

As shown in Figures 1, 2, 3, and 4, a bridge construction anti-dropping device includes four support columns 1, which are connected by connecting rods 2, and the top ends of the four support columns 1 are all provided with Telescopic rod 3, telescopic rod 3 comprises first rod body 31, second rod body 32, screw mandrel 33, helical gear pair 34 and rocking rod 35, and first rod body 31, second rod body 32 are hollow pipe bodies, first rod body The bottom end of 31 is connected with support column 1, and the plate body 36 that is rotatably connected with the output shaft of the driven wheel 80 of helical gear pair 34 is arranged in this first rod body 31, and the bottom of screw mandrel 33 is inserted in the first rod 31 body and Connected with the output shaft of the driven wheel 80 of the helical gear pair 34, the rocking rod 35 is inserted into the first rod body 31 and connected with the output shaft of the driving wheel 90 of the helical gear pair 34, the inner wall of the second rod body 32 is provided with an internal thread, The outer wall of the screw mandrel 33 is provided with an external thread, the top of the screw mandrel 33 is inserted into the second rod body 32 and the internal thread of the second rod body 32 is connected with the external thread of the screw mandrel 33, and the inner wall of the first rod body 31 is along the vertical direction. Two positioning grooves 37 are provided, and the outer wall of the second rod 32 body is provided with a positioning block 38 that is slidably connected with the positioning grooves 37; four protrusions 39 are respectively fixedly arranged on the inner side of the first rod body 31, and are adjacent to each other. The distance between the two projections 39 is 5cm, a board 40 is placed on the projection 39, a railing 41 is provided on the top of the first rod body 31, and a jack 42 is provided at the bottom of the four support columns 1 respectively.

The supporting column 1 is provided with a storage battery 43, the railing 41 is provided with a lamp body 44, and the lamp body 44 is electrically connected with the storage battery 43, which is convenient for workers to construct at night.

The bottom ends of the four support columns 1 are respectively provided with a jack 42, and the height of the jack 42 can be adjusted when the terrain is uneven, so that the utility model remains horizontal, so the utility model is applicable to various terrains; the inside of the first rod body 31 Several bumps 39 are fixedly arranged on the top, and the board body 40 can be rested on different 39 bumps to achieve the effect of adjusting the height of the board body 39. Workers can adjust the height of the board body 39 according to needs, which is convenient to use The top of the first rod body 31 is provided with a railing 41, the height of the railing 41 can be adjusted by adjusting the length of the telescopic rod 3, and the worker can adjust the height of the railing 41 when adjusting the height of the plate body 39, which ensures the personal safety of the worker The user shakes the rocker 35 to drive the helical gear pair 34 to rotate, to drive the screw mandrel 33 to rotate, because the positioning block 38 is stuck in the positioning groove 37, thus preventing the second rod body 32 from rotating together with the screw mandrel 33, and can only be positioned along the The groove 37 moves up and down, thereby realizing the height adjustment of the telescopic rod 3, and this height adjustment method is more convenient to use.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (5)

1. a bridge construction anti-drop device, comprise four support columns, connected by connecting rod between four described support columns, it is characterized in that: the top of four described support columns is provided with expansion link, described expansion link comprises first body of rod, second body of rod, screw mandrel, helical gear pair and rocking bar, described first body of rod, second body of rod is the body of hollow, the bottom of described first body of rod is connected with described support column, the plate body be rotatably connected with the output shaft of the driven pulley of described helical gear pair is provided with in this first body of rod, the bottom of described screw mandrel to be inserted in described first body of rod and to be connected with the output shaft of the driven pulley of described helical gear pair, described rocking bar to be inserted in described first body of rod and to be connected with the output shaft of the driving wheel of described helical gear pair, the inwall of described second body of rod is provided with internal thread, the outer wall of described screw mandrel is provided with external screw thread, the top of described screw mandrel is inserted in described second body of rod and the internal thread of described second body of rod and the external screw thread of described screw mandrel are connected, the inwall of described first body of rod is vertically provided with at least one locating slot, the outer wall of described second body of rod is provided with the locating piece be slidably connected with described locating slot, the inner side of described first body of rod is fixedly installed several projections respectively, described projection is shelved with one piece of plate body, the top of described first body of rod is provided with railing, and the bottom of four described support columns is respectively arranged with a jack.

2. bridge construction anti-drop device according to claim 1, is characterized in that: described support column is provided with battery.

3. bridge construction anti-drop device according to claim 2, it is characterized in that: described railing is provided with lamp body, described lamp body is connected with described storage battery.

4. bridge construction anti-drop device according to claim 1, is characterized in that: the number of slugs that expansion link described in every root is arranged is four, and the distance of adjacent two described projections is 5cm.

5. bridge construction anti-drop device according to claim 1, is characterized in that: the quantity of described locating slot is two.