Deep engineering in-hole monitoring instrument mechanical pushing device and method

Abstract

The invention provides a deep engineering in-hole monitoring instrument mechanical pushing device and method. The device comprises an orifice fixing device, a mechanical pushing device and a pushing rod, the front side of the mechanical pushing device is connected with the rear side of the orifice fixing device, the orifice fixing device is arranged at an orifice of a drill hole, the pushing rod is connected to the mechanical pushing device, the front end of the pushing rod is connected with a monitoring instrument, and the monitoring instrument is arranged in the drill hole. According to the invention, the pushing precision and stability of the monitoring instrument in the hole can be effectively improved, and the device is suitable for deep engineering under complex geological conditions, especially deep hole monitoring operation.

Description

Technical Field

[0001] The present invention relates to the technical field of deep tunnel engineering and underground engineering, and in particular to a mechanical pushing device and method for a deep engineering in-hole monitoring instrument. Background Art

[0002] In the field of deep engineering, especially in the monitoring and measurement of mining, geological exploration and underground engineering, deep hole drilling and monitoring technology play an important role. The main purpose of in-hole monitoring is to obtain real data of the underground environment in order to make engineering decisions and risk assessments. However, the steady advancement of current monitoring equipment in the in-hole environment faces many technical challenges.

[0003] During the advancement process, traditional monitoring devices are often restricted by the in-hole environment, resulting in uneven advancement and difficulty in achieving precise control, which affects the comprehensiveness and accuracy of monitoring. For example, when using borehole cameras to monitor the fracture of surrounding rock deep inside the hole, slight shaking during the advancement process often causes blurred monitoring images, and the front and back images cannot be matched and compared, thus affecting the analysis results. In addition, existing in-hole monitoring systems mostly rely on manual operation and are prone to human errors. At the same time, the lack of automated advancement and control mechanisms leads to low operating efficiency and cannot meet the needs of fast and accurate monitoring. Therefore, technological innovation is urgently needed to meet these challenges.

[0004] In summary, the existing in-hole monitoring technology has shortcomings in stability, propulsion accuracy and operational complexity. Therefore, a new mechanical stable push device is designed to effectively solve these problems and improve the accuracy and reliability of in-hole monitoring, which has important practical significance and application prospects. Summary of the invention

[0005] According to the technical problems raised above, a mechanical pushing device and method for deep engineering in-hole monitoring instruments are provided, which can solve the problems of uneven propulsion, insufficient precision and complicated operation in the current in-hole monitoring process, and improve the accuracy and reliability of monitoring.

[0006] The technical means adopted by the present invention are as follows:

[0007] A mechanical pushing device for a deep engineering borehole monitoring instrument comprises: a borehole fixing device, a mechanical pushing device and a pushing rod, wherein the front side of the mechanical pushing device is connected to the rear side of the borehole fixing device, the borehole fixing device is placed at the borehole of the borehole, the pushing rod is connected to the mechanical pushing device, the front end of the pushing rod is connected to the monitoring instrument, and the monitoring instrument is placed in the borehole.

[0008] Furthermore, the orifice fixing device includes a fixed shell, a straight rod and a telescopic bracket, the telescopic bracket is connected to the fixed shell, the telescopic bracket is connected to one end of the straight rod, and the other end of the straight rod is connected to the front side of the mechanical pushing device.

[0009] Furthermore, the telescopic bracket includes a first rod and a second rod, one end of the first rod is hinged to one end of the fixed shell, and the other end is hinged to one end of the second rod, the other end of the second rod is connected to one end of the straight rod through a hinge shaft, and sliding rails are provided on both sides of the fixed shell, the hinge shaft is slidably connected to the sliding rails on both sides, and the other end of the straight rod passes through the other end of the fixed shell.

[0010] Furthermore, the fixed shell is a hollow structure, the telescopic bracket slides on the slide rail and realizes the conversion from parallel to vertical, and when the first rod and the second rod are in a parallel state, the telescopic bracket is located in the hollow structure.

[0011] Furthermore, the mechanical pushing device includes an outer shell, a first-level pushing member, a second-level pushing member, a first-level pulling belt, a second-level pulling belt and a driving mechanism, wherein the driving mechanism is mounted on the outer shell and connected to the first-level pushing member, the first-level pushing member is nested in the outer shell and can slide in the outer shell; the second-level pushing member is nested in the first-level pushing member and can slide in the first-level pushing member; one end of the first-level pulling belt is connected to the outer shell, and the other end bypasses the rear side of the first-level pushing member and is connected to the front side of the second-level pushing member; one end of the second-level pulling belt is connected to the front side of the second-level pushing member, and the other end bypasses the front side of the first-level pushing member and is connected to the rear of the outer shell.

[0012] Furthermore, a first straight pin is provided on one side of the rear portion of the housing, and a second straight pin is provided on the other side of the rear portion; rods are provided on the front and rear sides of the first-stage pushing member, and a third straight pin and a fourth straight pin are provided on the front side of the second-stage pushing member;

[0013] The head end of the primary pulling belt is fixed to the first straight pin, the tail end is fixed to the third straight pin, and the middle of the primary pulling belt is placed on the rod at the rear side of the primary pushing member;

[0014] The head end of the secondary pulling belt is fixed to the second straight pin, the tail end is fixed to the fourth straight pin, and the middle of the secondary pulling belt is placed on the rod at the front side of the primary pushing member.

[0015] Furthermore, the driving mechanism includes a linear rack and a gear mechanism, the gear mechanism is mounted on the housing, the linear rack is mounted on the primary pushing member, and the gear mechanism is transmission-connected to the linear rack.

[0016] Furthermore, the gear mechanism includes a spur gear and a helical gear transmission system, the helical gear transmission system includes a motor, a driving helical gear and a passive helical gear, the output end of the motor is connected to the driving helical gear, the driving helical gear is meshed with the passive helical gear, the passive helical gear and the spur gear are connected on the same rotating shaft, and the spur gear is meshed with the linear rack.

[0017] Furthermore, the shell is provided with a first through hole, the secondary pushing member is provided with a second through hole, the pushing rod is connected through the first through hole and the second through hole, and the first through hole and the second through hole both have locking structures for locking or loosening the pushing rod.

[0018] The present invention also provides a method for pushing a mechanical pushing device of a deep engineering borehole monitoring instrument, comprising the following steps:

[0019] Step 1: Connect the monitoring instrument, the orifice fixing device, the mechanical pushing device and the pushing rod in sequence, and place the monitoring instrument and the orifice fixing device at the orifice of the drill hole;

[0020] Step 2: Compress the orifice fixing device and lock it to ensure that the entire pushing device is stably supported on the orifice;

[0021] Step 3: Lock the first through hole of the push rod on the housing of the mechanical push device, and release the second through hole of the push rod on the secondary push member; the motor rotates forward to drive the helical gear transmission system to make the linear rack push the primary push member to move backward, drive the primary pulling belt to move, and cause the secondary push member to move backward; in this process, the push rod is extended section by section to the second through hole of the secondary push member;

[0022] Step 4: Loosen the first through hole on the housing of the mechanical pushing device through which the pushing rod passes, and lock the second through hole on the secondary pushing member through which the pushing rod passes; the motor reverses to drive the helical gear transmission system to make the linear rack push the primary pushing member forward, drive the secondary pulling belt to move, and cause the secondary pushing member to move forward; in this process, the pushing rod steadily pushes the monitoring instrument into the hole;

[0023] Step 5: Repeat steps 3 and 4 until the monitoring instrument is pushed to the predetermined position.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The mechanical stable pushing device of the present invention can achieve smooth and uniform propulsion, significantly improve the positioning accuracy of the monitoring instrument in the hole, and thus obtain more real and accurate underground environmental data. Through the design of the hole mouth fixing device, the entire pushing system is more stable during operation, reducing errors caused by external interference. This stability ensures the reliability of the monitoring data. Traditional monitoring equipment usually relies on manual operation and is prone to human errors. The device of the present invention reduces dependence on manual labor through an automated control system, reduces operational risks, and improves work efficiency.

[0026] 2. The hole fixing device of the present invention adopts a design combining a telescopic bracket and a slide rail, so that it can be flexibly adjusted to adapt to drill holes of different diameters. The parallel to vertical conversion function of the telescopic bracket ensures the convenience and efficiency of the installation process of the pushing device.

[0027] 3. The hierarchical pushing design of the mechanical pushing device of the present invention (including the primary pushing member and the secondary pushing member) rationally distributes the pushing force to different components through the pulling belt transmission structure, making the pushing process smoother and more efficient, and able to meet the needs of long-distance pushing in complex environments in deep holes.

[0028] Based on the above reasons, the present invention can be widely promoted in the fields of deep tunnel engineering and underground engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a schematic diagram of a mechanical pushing device of a deep engineering borehole monitoring instrument used in a borehole according to the present invention.

[0031] Figure 2 It is a schematic diagram of the orifice fixing device of the present invention, wherein (a) is a state where the orifice fixing device does not play a supporting role, and (b) is a state where the orifice fixing device plays a supporting role.

[0032] Figure 3 The schematic diagram of the mechanical pushing device of the present invention during operation, wherein (a) is a state where the mechanical pushing device is not in operation, (b) is a state where the motor of the mechanical pushing device is rotating forward, and (c) is a state where the motor of the mechanical pushing device is rotating reversely.

[0033] Figure 4 This is a diagram of the application of the mechanical pushing device of the deep engineering borehole monitoring instrument of the present invention in engineering.

[0034] In the figure: 1. surrounding rock of deep engineering; 2. drilling hole; 3. hole mouth fixing device; 4. mechanical pushing device; 5. pushing rod; 6. monitoring instrument; 3-1. fixed shell; 3-1-1. internal thread; 3-2. straight rod; 3-3. telescopic bracket; 3-3-1. first rod; 3-3-2. second rod; 3-3-3. hinge shaft; 3-3-4. slide rail; 4-1. shell; 4-1-1. first through hole; 4-1-2. active bevel gear; 4-1-3. passive bevel gear; 4-1-4. spur gear; 4-2. primary pushing member; 4-2-1. linear rack; 4-3. secondary pushing member; 4-3-1. second through hole; 4-4. primary pulling belt; 4-5. secondary pulling belt. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a mechanical stable pushing device for in-hole monitoring instruments for deep engineering, which is a mechanical stable pushing device for in-hole monitoring instruments and is suitable for pushing in-hole monitoring instruments for deep engineering, such as in-hole drilling video. The device of the present invention includes a hole mouth fixing device 3, a mechanical pushing device 4 and a pushing rod 5. There is a borehole 2 in the surrounding rock 1 of the deep engineering. The front side of the mechanical pushing device 4 is connected to the rear side of the hole mouth fixing device 3, and the hole mouth fixing device 3 is placed at the hole mouth of the borehole 2. The pushing rod 5 is connected to the mechanical pushing device 4, and the front end of the pushing rod 5 is connected to the monitoring instrument 6, and the monitoring instrument 6 is placed in the borehole 2. The present invention can effectively improve the pushing accuracy and stability of the monitoring instrument in the hole, and is suitable for deep engineering under complex geological conditions, especially deep hole monitoring operations.

[0043] 1. Device structure

[0044] The orifice fixing device 3 is composed of a fixed shell 3-1, a straight rod 3-2 and a telescopic bracket 3-3, which is firmly installed at the orifice of the drill hole 2 to support the stability of the entire device. The telescopic bracket 3-3 is connected to the fixed shell 3-1, and the telescopic bracket 3-3 is connected to one end of the straight rod 3-2, and the other end of the straight rod 3-2 is connected to the front side of the mechanical pushing device 4. The fixed shell 3-1 of the orifice fixing device 3 cooperates with the telescopic bracket 3-3, and the telescopic bracket 3-3 is lifted by the push of the straight rod 3-2 to support the orifice, so as to achieve stable fixation of the orifice and ensure the stability of the entire pushing device.

[0045] The fixed shell 3-1 of the orifice fixing device 3 is a hollow structure and is provided with a slide rail 3-3-4 for the telescopic bracket 3-3 to slide; the telescopic bracket 3-3 is composed of two sections, the front end of which is embedded in the fixed shell 3-1, and the rear end is connected to the straight rod 3-2, which can slide on the slide rail 3-3-4 and realize the conversion from parallel to vertical to effectively support the orifice. Specifically, the telescopic bracket 3-3 includes a first rod 3-3-1 and a second rod 3-3-2. One end of the first rod 3-3-1 is hinged to one side of the fixed shell 3-1, and the other end is hinged to one end of the second rod 3-3-2. The other end of the second rod 3-3-2 is connected to one end of the straight rod 3-2 through a hinge shaft 3-3-3. Slide rails 3-3-4 are provided on both sides of the fixed shell 3-1. The hinge shaft 3-3-3 is slidably connected in the slide rails 3-3-4 on both sides. The other end of the straight rod 3-2 passes through the other end (front end) of the fixed shell 3-1 and is connected to the front side of the mechanical pushing device 4. When the first rod 3-3-1 and the second rod 3-3-2 are in a parallel state, the telescopic bracket 3-3 is located in the hollow structure. Among them, the threaded rod 3-2 is pushed by manual rotation to raise the telescopic bracket 3-3 to support the orifice. The straight rod 3-2 is a threaded rod, and the front end of the fixed shell 3-1 is provided with a hexagonal nut ( Figure 2It can be seen that there is a hexagonal nut inside the fixed shell 3-1), the interior of the hexagonal nut has an internal thread 3-1-1, the straight rod 3-2 passes through the internal thread 3-1-1 of the fixed shell 3-1, and the straight rod 3-2 is rotated forcefully to push forward. The hole fixing device 3 supports the hole wall, and the straight rod 3-2 and the internal thread 3-1-1 of the fixed shell 3-1 are directly locked.

[0046] The mechanical pushing device 4 includes a housing 4-1, a primary pushing member 4-2, a secondary pushing member 4-3, a primary pulling belt 4-4, a secondary pulling belt 4-5, a linear rack 4-2-1, a spur gear 4-1-4 and a helical gear mechanism (active helical gear 4-1-2, passive helical gear 4-1-3). The outer shell 4-1 is connected to the straight rod 3-2 of the orifice fixing device 3; the internal gear transmission system drives the linear rack 4-2-1 and the pushing member to move through the rotation of the bevel gear mechanism and the spur gear 4-1-4; the first-level pushing member 4-2 is nested in the outer shell 4-1, and the second-level pushing member 4-3 is nested in the first-level pushing member 4-2. The outer shell 4-1 is fixed, while the first-level pushing member 4-2 and the second-level pushing member 4-3 can move; the first-level pulling belt 4-4 and the second-level pulling belt 4-5 are respectively fixedly connected to the straight pins of the outer shell 4-1 and the second-level pushing member 4-3 at both ends, and are placed in the middle on the rod of the first-level pushing member 4-2, and are transmitted through the first-level pushing member 4-2.

[0047] The push rod 5 can be extended section by section, and the front end is used to connect the monitoring instrument 6, passing through the first through hole 4-1-1 of the mechanical push device housing 4-1 and the second through hole 4-3-1 of the secondary push member 4-3. The gear transmission system drives the push member to drive the push rod 5 to steadily advance or retreat into the hole.

[0048] A spur gear 4-1-4 and a helical gear transmission system (active helical gear 4-1-2, passive helical gear 4-1-3) are arranged in the housing 4-1 of the mechanical pushing device 4. The two helical gears mesh with each other. The passive helical gear 4-1-3 and the spur gear 4-1-4 share a rotating shaft. The motor is connected to the active helical gear 4-1-2 to drive the passive helical gear 4-1-3 and the spur gear 4-1-4 to rotate, thereby promoting the linear rack 4-2-1 and the pushing member to move, thereby realizing stable and continuous advancement of the monitoring instrument 6 under the action of the pushing rod 5.

[0049] The front end of the push rod 5 is connected to the monitoring instrument 6 by a thread. The push rod 5 always passes through the first through hole 4-1-1 of the housing 4-1 and the second through hole 4-3-1 of the secondary push member 4-3, and is extended section by section to ensure the accuracy and stability of the push during the monitoring operation in the hole. The first through hole 4-1-1 and the second through hole 4-3-1 both have a locking structure for locking or loosening the push rod 5. The locking structure includes a threaded hole opened on the side wall of the first through hole 4-1-1 (second through hole 4-3-1), a bolt is inserted and connected in the threaded hole, and a nut is connected to the bolt. After the push rod 5 passes through the first through hole 4-1-1 (second through hole 4-3-1), the bolt is passed through the threaded hole, and the push rod 5 is locked by the nut.

[0050] A first straight pin is provided on one side of the rear part of the housing 4-1, and a second straight pin is provided on the other side of the rear part; rods are provided on the front and rear sides of the primary push member 4-2, and a third straight pin and a fourth straight pin are provided on the front side of the secondary push member 4-3. The head end of the primary pulling belt 4-4 is fixed to the first straight pin of the housing 4-1, the tail end is fixed to the third straight pin of the secondary push member 4-3, and the middle of the primary pulling belt 4-4 is placed on the rod on the rear side of the primary push member 4-2; the head end of the secondary pulling belt 4-5 is fixed to the second straight pin of the housing 4-1, the tail end is fixed to the fourth straight pin of the secondary push member 4-3, and the middle of the secondary pulling belt 4-5 is placed on the rod on the front side of the primary push member 4-2.

[0051] 2. Operation method

[0052] A mechanical stable pushing method for a deep engineering borehole monitoring instrument adopts the above device and comprises the following steps:

[0053] Step 1: sequentially connect the monitoring instrument 6, the orifice fixing device 3, the mechanical pushing device 4 and the pushing rod 5, and place the monitoring instrument 6 and the orifice fixing device 3 at the orifice of the borehole 2;

[0054] Step 2: compress the orifice fixing device 3 and lock it to ensure that the entire pushing device is stably supported on the orifice;

[0055] Step 3: Lock the first through hole 4-1-1 of the push rod 5 on the housing 4-1 of the mechanical push device 4, and release the second through hole 4-3-1 of the push rod 5 on the secondary push member 4-3; the motor rotates forward to drive the helical gear transmission system to make the linear rack 4-2-1 push the primary push member 4-2 to move backward, drive the primary pulling belt 4-4 to move, and cause the secondary push member 4-3 to move backward; in this process, the push rod 5 is extended section by section to the second through hole 4-3-1 of the secondary push member 4-3;

[0056] Step 4: Loosen the first through hole 4-1-1 on the housing 4-1 of the mechanical pushing device 4 through which the pushing rod 5 passes, and lock the second through hole 4-3-1 on the secondary pushing member 4-3 through which the pushing rod 5 passes; the motor reverses to drive the helical gear transmission system to make the linear rack 4-2-1 push the first pushing member 4-2 to move forward, drive the secondary pulling belt 4-5 to move, and cause the secondary pushing member 4-3 to move forward; in this process, the pushing rod 5 steadily pushes the monitoring instrument 6 into the hole;

[0057] Step 5: Repeat steps 3 and 4 until the monitoring instrument 6 is pushed to the predetermined position.

[0058] The engineering application of the mechanical stable pushing device of the deep engineering borehole monitoring instrument of the present invention is as follows: Figure 4 .

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical pushing device for deep engineering borehole monitoring instrument, characterized in that: include: An orifice fixing device (3), a mechanical pushing device (4) and a pushing rod (5), wherein the front side of the mechanical pushing device (4) is connected to the rear side of the orifice fixing device (3), the orifice fixing device (3) is placed at the orifice of the borehole (2), the pushing rod (5) is connected to the mechanical pushing device (4), the front end of the pushing rod (5) is connected to a monitoring instrument (6), and the monitoring instrument (6) is placed in the borehole (2).

2. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 1 is characterized in that: The orifice fixing device (3) comprises a fixed shell (3-1), a straight rod (3-2) and a telescopic bracket (3-3), wherein the telescopic bracket (3-3) is connected to the fixed shell (3-1), the telescopic bracket (3-3) is connected to one end of the straight rod (3-2), and the other end of the straight rod (3-2) is connected to the front side of the mechanical pushing device (4).

3. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 2 is characterized in that: The telescopic bracket (3-3) comprises a first rod (3-3-1) and a second rod (3-3-2); one end of the first rod (3-3-1) is hinged to one end of the fixed housing (3-1), and the other end is hinged to one end of the second rod (3-3-2); the other end of the second rod (3-3-2) is connected to one end of the straight rod (3-2) via a hinge shaft (3-3-3); two sides of the fixed housing (3-1) are provided with slide rails (3-3-4); the hinge shaft (3-3-3) is slidably connected to the slide rails (3-3-4) on both sides; the other end of the straight rod (3-2) passes through the other end of the fixed housing (3-1).

4. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 3 is characterized in that: The fixed shell (3-1) is a hollow structure, the telescopic bracket (3-3) slides on the slide rail (3-3-4) and realizes the conversion from parallel to vertical, and when the first rod (3-3-1) and the second rod (3-3-2) are in a parallel state, the telescopic bracket (3-3) is located in the hollow structure.

5. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 1 is characterized in that: The mechanical pushing device (4) comprises a housing (4-1), a primary pushing member (4-2), a secondary pushing member (4-3), a primary pulling belt (4-4), a secondary pulling belt (4-5) and a driving mechanism. The driving mechanism is mounted on the housing (4-1) and connected to the primary pushing member (4-2). The primary pushing member (4-2) is nested in the housing (4-1) and can slide in the housing (4-1); the secondary pushing member (4-3) is nested in the primary pushing member (4-2) and can slide in the primary pushing member (4-2); one end of the primary pulling belt (4-4) is connected to the housing (4-1), and the other end bypasses the rear side of the primary pushing member (4-2) and is connected to the front side of the secondary pushing member (4-3); one end of the secondary pulling belt (4-5) is connected to the front side of the secondary pushing member (4-3), and the other end bypasses the front side of the primary pushing member (4-2) and is connected to the rear of the housing (4-1).

6. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 5 is characterized in that: A first straight pin is provided on one side of the rear portion of the housing (4-1), and a second straight pin is provided on the other side of the rear portion; rods are provided on the front and rear sides of the first-stage pushing member (4-2), and a third straight pin and a fourth straight pin are provided on the front side of the second-stage pushing member (4-3); The head end of the primary pulling belt (4-4) is fixed to the first straight pin, the tail end is fixed to the third straight pin, and the middle of the primary pulling belt (4-4) is placed on the rod at the rear side of the primary pushing member (4-2); The head end of the secondary pulling belt (4-5) is fixed to the second straight pin, the tail end is fixed to the fourth straight pin, and the middle of the secondary pulling belt (4-5) is placed on the rod on the front side of the primary pushing member (4-2).

7. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 5 is characterized in that: The driving mechanism comprises a linear rack (4-2-1) and a gear mechanism, wherein the gear mechanism is mounted on the housing (4-1), the linear rack (4-2-1) is mounted on the primary pushing member (4-2), and the gear mechanism is transmission-connected to the linear rack (4-2-1).

8. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 7 is characterized in that: The gear mechanism comprises a spur gear (4-1-4) and a helical gear transmission system, wherein the helical gear transmission system comprises a motor, a driving helical gear (4-1-2) and a passive helical gear (4-1-3), wherein the output end of the motor is connected to the driving helical gear (4-1-2), the driving helical gear (4-1-2) is meshedly connected to the passive helical gear (4-1-3), the passive helical gear (4-1-3) and the spur gear (4-1-4) are connected to the same rotating shaft, and the spur gear (4-1-4) is meshedly connected to the linear rack (4-2-1).

9. The mechanical pushing device for deep engineering borehole monitoring instrument according to claim 5 is characterized in that: The housing (4-1) is provided with a first through hole (4-1-1), the secondary pushing member (4-3) is provided with a second through hole (4-3-1), the pushing rod (5) is connected through the first through hole (4-1-1) and the second through hole (4-3-1), and the first through hole (4-1-1) and the second through hole (4-3-1) both have locking structures for locking or releasing the pushing rod (5).

10. A method for pushing a mechanical pushing device for a deep engineering borehole monitoring instrument according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: sequentially connect the monitoring instrument (6), the orifice fixing device (3), the mechanical pushing device (4) and the pushing rod (5), and place the monitoring instrument (6) and the orifice fixing device (3) at the orifice of the borehole (2); Step 2: compress the orifice fixing device (3) and lock it to ensure that the entire pushing device is stably supported on the orifice; Step 3: Lock the first through hole (4-1-1) on the housing (4-1) of the mechanical pushing device (4) through which the pushing rod (5) passes, and release the second through hole (4-3-1) on the secondary pushing member (4-3) through which the pushing rod (5) passes; the motor rotates forward to drive the helical gear transmission system to cause the linear rack (4-2-1) to push the primary pushing member (4-2) to move backward, drive the primary pulling belt (4-4) to move, and cause the secondary pushing member (4-3) to move backward; in this process, the pushing rod (5) is extended section by section to the second through hole (4-3-1) of the secondary pushing member (4-3); Step 4: Loosen the first through hole (4-1-1) on the housing (4-1) of the mechanical pushing device (4) through which the pushing rod (5) passes, and lock the second through hole (4-3-1) on the secondary pushing member (4-3) through which the pushing rod (5) passes; the motor reverses to drive the helical gear transmission system to make the linear rack (4-2-1) push the primary pushing member (4-2) to move forward, drive the secondary pulling belt (4-5) to move, and cause the secondary pushing member (4-3) to move forward; during this process, the pushing rod (5) steadily pushes the monitoring instrument (6) into the hole; Step 5: Repeat steps 3 and 4 until the monitoring instrument (6) is pushed to the predetermined position.

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