Exhaust device for bottom die of full-circle needle beam trolley

Abstract

The utility model discloses an exhaust device for a bottom die of a full-circle needle beam trolley, which comprises the following components: a trolley bottom die plate which is provided with an exhaust hole; the exhaust pipe is welded above the exhaust hole, and a plurality of air outlets are formed in the outer end of the upper side of the exhaust pipe in the circumferential direction; and the auxiliary exhaust assembly is detachably installed at an opening in the upper end of the exhaust pipe, the auxiliary exhaust assembly comprises an installation cover and a high-frequency vibrating rod, and a vibrating rod of the high-frequency vibrating rod stretches into the lower portion of the bottom of the trolley bottom formwork and is used for conducting vibrating exhaust operation on concrete. The detachable auxiliary exhaust assembly and the plugging cover are respectively designed on the exhaust pipe, during exhaust, the auxiliary exhaust assembly is installed on the exhaust pipe, initial exhaust is achieved through concrete, meanwhile, a high-frequency vibrating rod in the auxiliary exhaust assembly is inserted into the concrete, and the concrete is compacted through high-frequency vibration generated by the high-frequency vibrating rod, so that the exhaust efficiency is improved. And therefore, internal bubbles are emptied, and the subsequent pouring quality is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering construction, in particular to an exhaust device for a bottom mold of a full-circular needle beam trolley. Background Art

[0002] With the rapid development of various water diversion projects, the number of full-circle tunnel projects has gradually increased. The full-circle needle beam formwork trolley is widely used in the full-circle tunnel concrete pouring construction.

[0003] In the current secondary lining construction of the needle beam trolley, some air will remain at the bottom of the needle beam trolley. In order to discharge the gas, an exhaust port for exhaust will be designed on the bottom mold of the trolley. The above exhaust method mainly uses the extrusion of the concrete itself to discharge the excess gas. Since the pouring operation is carried out through multiple pouring windows during the lining construction, there is still a problem of insufficient density between the concrete and the concrete itself, resulting in a large number of pores and burrs after the concrete is formed.

[0004] In view of this, an exhaust device for a full-circular needle beam trolley bottom mold is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust device for a bottom mold of a full-circular needle beam trolley in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the utility model is as follows: an exhaust device for a bottom mold of a full-circular needle beam trolley, comprising:

[0007] A trolley bottom template having exhaust holes;

[0008] An exhaust pipe, which is welded above the exhaust hole, and a plurality of air outlets are circumferentially opened at the upper outer end of the exhaust pipe;

[0009] The auxiliary exhaust assembly is detachably mounted at the upper end opening of the exhaust pipe. The auxiliary exhaust assembly comprises a mounting cover and a high-frequency vibrating rod. The vibrating rod of the high-frequency vibrating rod extends under the bottom of the bottom template of the trolley to vibrate and exhaust the concrete.

[0010] In a preferred embodiment, a blocking cover is further included, which is detachably mounted at the upper opening of the exhaust pipe, and the bottom of the blocking cover extends downward to form a blocking head.

[0011] In a preferred embodiment, the plugging head has the same inner diameter as the exhaust pipe, and the bottom end of the plugging head extends to below the air outlet.

[0012] In a preferred embodiment, the lower outer ends of the mounting cover and the blocking cover are both provided with external threads, and the opening of the exhaust pipe is provided with internal threads matching the external threads.

[0013] In a preferred embodiment, the installation cover is provided with an observation port vertically extending therethrough.

[0014] In a preferred embodiment, a microwave ranging sensor is also embedded in the bottom end surface of the mounting cover.

[0015] In a preferred embodiment, the bottom end surface of the mounting cover is located above the air outlet.

[0016] In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are as follows: a detachable auxiliary exhaust component and a sealing cover are respectively designed on the exhaust pipe. When exhausting, the auxiliary exhaust component is installed on the exhaust pipe, and the concrete itself is used to achieve preliminary exhaust. At the same time, the high-frequency vibrator in the auxiliary exhaust component is inserted into the concrete, and the high-frequency vibration generated by it is used to compact the concrete, thereby emptying the bubbles inside to ensure the subsequent concrete molding quality. After exhausting, the auxiliary exhaust component can be taken out and the sealing cover can be replaced to achieve the sealing operation of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall internal structure of the utility model when exhausting;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model when sealing after exhaust.

[0019] Markings in the figure: 1-high frequency vibrating rod, 2-bottom template of vehicle, 3-exhaust hole, 4-exhaust pipe, 5-air outlet, 6-external thread, 7-microwave ranging sensor, 8-observation port, 9-installation cover, 10-sealing cover, 101-sealing head. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Reference Figure 1-2 An exhaust device for a full-circle needle beam trolley bottom mold comprises: a trolley bottom mold plate 2, which has an exhaust hole 3; an exhaust pipe 4, which is welded above the exhaust hole 3, and a plurality of air outlets 5 are circumferentially opened at the upper outer end of the exhaust pipe 4. The exhaust hole 3 is designed on the trolley bottom mold plate 2, which can exhaust the gas in the concrete to improve the subsequent concrete molding quality.

[0022] Among them, the exhaust holes 3 can be set to be multiple according to the number of templates to ensure the exhaust effect.

[0023] Furthermore, the auxiliary exhaust assembly is detachably mounted at the upper end opening of the exhaust pipe 4. The auxiliary exhaust assembly includes a mounting cover 9 and a high-frequency vibrator 1. The vibrating rod of the high-frequency vibrator 1 extends to the bottom of the bottom formwork 2 of the trolley, and is used to vibrate and exhaust the concrete. When exhausting, the auxiliary exhaust assembly can be installed at the upper end of the exhaust pipe 4. At this time, the high-frequency vibrator in the auxiliary exhaust assembly is inserted into the concrete, and the high-frequency vibration generated by the vibrator is used to compact the concrete, thereby emptying the bubbles inside to ensure the quality of subsequent pouring.

[0024] Furthermore, it also includes a sealing cover 10, which can be detachably installed at the upper end opening of the exhaust pipe 4. The bottom of the sealing cover 10 extends downward to form a sealing head 101. The sealing head 101 has the same inner diameter as the exhaust pipe 4, and the bottom end of the sealing head 101 extends to below the air outlet 5. After exhausting the air, the auxiliary exhaust assembly is taken out, and then the sealing cover 10 is installed on the exhaust pipe 4, and the air outlet 5 is sealed with the sealing head 101, thereby realizing the sealing operation of the concrete.

[0025] Furthermore, the lower outer ends of the mounting cover 9 and the sealing cover 10 are provided with external threads 6, and the opening of the exhaust pipe 4 is provided with internal threads compatible with the external threads 6. The above design can realize the combined operation of the mounting cover 9 and the sealing cover 10 and the exhaust pipe 4.

[0026] Furthermore, an observation port 8 is vertically penetrated through the installation cover 9, and the staff can observe the concrete pouring condition inside the installation cover intuitively through the observation port 8.

[0027] Furthermore, a microwave ranging sensor 7 is embedded in the bottom end surface of the mounting cover 9. The microwave ranging sensor 7 emits microwaves, which are reflected back by the concrete inside, so that the approximate amount of concrete poured (i.e., the current pouring height) can be calculated. The staff can determine whether to continue pouring or perform sealing operations based on the amount of concrete.

[0028] Furthermore, the bottom end surface of the mounting cover 9 is located above the air outlet 5. The above design can realize the vibration operation without affecting the exhaust quality.

[0029] The high-frequency vibrating rod 1 and the microwave ranging sensor 7 are electrically connected to an external PLC terminal (not shown in the figure), and the overall operation is controlled by the PLC terminal.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust device for a full-circle needle beam trolley bottom mold, characterized in that: include: A trolley bottom template having exhaust holes; An exhaust pipe, which is welded above the exhaust hole, and a plurality of air outlets are circumferentially opened at the upper outer end of the exhaust pipe; The auxiliary exhaust assembly is detachably mounted at the upper end opening of the exhaust pipe. The auxiliary exhaust assembly comprises a mounting cover and a high-frequency vibrating rod. The vibrating rod of the high-frequency vibrating rod extends under the bottom of the bottom template of the trolley to vibrate and exhaust the concrete.

2. The exhaust device of the bottom mold of the full-circle needle beam trolley as claimed in claim 1, characterized in that: It also includes a plugging cover which is detachably mounted at the upper opening of the exhaust pipe, and the bottom of the plugging cover extends downward to form a plugging head.

3. The exhaust device of the bottom mold of the full-circle needle beam trolley as claimed in claim 2, characterized in that: The plugging head has the same inner diameter as the exhaust pipe, and the bottom end of the plugging head extends below the air outlet.

4. The exhaust device of the bottom mold of the full-circle needle beam carriage as claimed in claim 3, characterized in that: The lower outer ends of the mounting cover and the blocking cover are both provided with external threads, and the opening of the exhaust pipe is provided with internal threads matched with the external threads.

5. The exhaust device of the bottom mold of the full-circle needle beam carriage according to claim 1, characterized in that: The installation cover is provided with an observation port along the vertical direction.

6. The exhaust device of the bottom mold of the full-circle needle beam carriage according to claim 1, characterized in that: A microwave ranging sensor is also embedded on the bottom end surface of the installation cover.

7. The exhaust device of the bottom mold of the full-circle needle beam carriage according to claim 1, characterized in that: The bottom end surface of the mounting cover is located above the air outlet.

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