Freezing hole inclinometer base

Abstract

The invention discloses a freezing hole inclinometer base frame, comprising a fixed sleeve and a base for installing an inclinometer, cantilevers are hinged on both sides of the fixed sleeve, telescopic adjustment rod groups are hinged on the cantilevers, the base is hinged on each telescopic adjustment rod group, a first locking piece is provided between the cantilever and the fixed sleeve, a second locking piece is provided between the cantilever and the telescopic adjustment rod group, a third locking piece is provided between the telescopic adjustment rod group and the base, a plurality of buckle mechanisms for buckling a freezing hole inclinometer tube and radially adjustable along the fixed sleeve are provided on the circumference of one end of the fixed sleeve, and a level bubble is provided on the base. The freezing hole inclinometer base frame has a simple structure, is easy to adjust, and has good stability.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments or components, in particular to a freezing hole inclinometer base frame. Background Art

[0002] In the freezing method drilling construction of subway section connection channels, in order to ensure the design position and verticality of the freezing hole, the freezing hole drilling process needs to be measured for inclination. There are many methods for freezing hole inclination measurement. When the freezing method drilling depth is small and the bending change is low, a total station or theodolite is often used for inclination measurement.

[0003] The use of total stations or theodolites for frozen hole inclinometers has the advantages of simple equipment, easy operation, and reliable accuracy. However, in actual applications, most of the frozen holes in subway section communication channels are arranged obliquely, and it is difficult to set up conventional tripods, and it is difficult to fix total stations and theodolites. Conventional brackets cannot meet the inclinometer measurement requirements of total stations and theodolites. The use conditions of the inclinometer base frame are complex and diverse. Because the level tube of the inclinometer instrument is sensitive and the precision leveling range is limited, if the inclinometer base frame platform has no rough leveling capability and only relies on visual manual adjustment, the leveling control of the base frame platform is cumbersome, and it is difficult to achieve fast and effective precision leveling of the total station. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a freezing hole inclinometer base frame with simple structure, convenient adjustment and good stability.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A freezing hole inclinometer base frame comprises a fixed sleeve and a base for installing an inclinometer, both sides of the fixed sleeve are hinged with cantilevers, a telescopic adjustment rod group is hinged on the cantilever, the base is hinged on each telescopic adjustment rod group, a first locking piece is provided between the cantilever and the fixed sleeve, a second locking piece is provided between the cantilever and the telescopic adjustment rod group, a third locking piece is provided between the telescopic adjustment rod group and the base, a plurality of buckle mechanisms for buckling a freezing hole inclinometer tube and radially adjustable along the fixed sleeve are provided on the circumference of one end of the fixed sleeve, and a level bubble is provided on the base.

[0007] As a further improvement of the above technical solution:

[0008] The snap mechanism includes a positioning ruler, a snap member and a fixed seat, the fixed seat is fixed on the fixed sleeve, the positioning ruler can be slidably arranged on the fixed seat along the radial direction of the fixed sleeve, the snap member is arranged at one end of the positioning ruler facing the center of the fixed sleeve, and the fixed seat is provided with a locking member for locking the positioning ruler.

[0009] The positioning ruler is provided with a positioning rack, the fixing seat is provided with a positioning knob, and the positioning knob is meshed with the positioning rack.

[0010] The fixed sleeve is provided with a fourth locking piece for locking the freezing hole inclinometer tube.

[0011] The telescopic adjustment rod group includes a main rod and a sliding rod, the main rod is hinged to the cantilever, the second locking piece is arranged between the main rod and the cantilever, the sliding rod is slidably arranged on the main rod, the base is hinged to the sliding rod, the third locking piece is arranged between the sliding rod and the base, and a fine-tuning mechanism for slidingly adjusting the sliding rod is arranged between the main rod and the sliding rod.

[0012] The fine-tuning mechanism comprises a fine-tuning knob, a transmission wheel set and a travel gear, all of which are arranged on the main rod. The fine-tuning knob is linked to the travel gear through the transmission wheel set. The sliding rod is provided with a sliding rack, and the sliding rack is meshed with the travel gear.

[0013] There are two sliding racks and two traveling gears, which are respectively meshed with the two sliding racks. The transmission wheel group includes a locking gear, an intermediate gear, a differential gear, a steering gear, a first control gear and a second control gear, which are all arranged on the main rod. The fine-tuning knob, the locking gear, the intermediate gear, the differential gear, the steering gear, the first control gear and a traveling gear are meshed in sequence, and the other traveling gear and the differential gear are both meshed with the second control gear. A locking component that can lock the locking gear is provided on the main rod.

[0014] The locking assembly includes a box body fixed on the main rod, a locking rod slidably arranged on the box body and a limit frame movably arranged on the box body, the locking rod is provided with a latch tooth at one end facing the locking gear and a pressing portion at the other end, a first elastic reset member is provided between the locking rod and the box body, a limit protrusion is provided on the limit frame, a limit groove for the limit protrusion to be inserted into is provided on the side of the locking rod, an unlocking button for pushing the limit frame to separate the limit protrusion from the limit groove is provided on the limit frame, and a second elastic reset member is provided between the limit frame and the box body.

[0015] The main rod is provided with a locking mechanism for locking the sliding rod.

[0016] The locking mechanism comprises a locking knob and a pressing piece. The locking knob is threadedly connected to the main rod, and the pressing piece is connected to the locking knob for pressing the sliding rod.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] When the freezing hole inclinometer base frame of the present invention is used, the fixed sleeve is sleeved on the freezing hole inclinometer tube, the end of the freezing hole inclinometer tube is buckled on each buckle mechanism, and the buckle mechanism is used to adjust the center along the radial direction of the fixed sleeve, and then, by adjusting the angle of the cantilever and the telescopic adjustment rod group and adjusting the telescopic position of the telescopic adjustment rod group, the base is adjusted to a horizontal state and is in a specified position, and then the first locking member, the second locking member and the third locking member are locked to fix the relative positions of the fixed sleeve, the cantilever, the telescopic adjustment rod group and the base, thereby fixing the base in a horizontal state, and then the inclinometer is installed on the base. Through the telescopic adjustment rod groups, the freezing hole inclinometer tube and the fixed sleeve can be quickly aligned (the center lines of the two coincide), which is conducive to subsequent accurate measurement. Through the rotation of the cantilever and the telescopic adjustment rod group and the horizontal measurement function of the level bubble, the horizontality of the base can be quickly adjusted. Through the telescopic adjustment function of the telescopic adjustment rod group, it is convenient to adjust the position of the base in translation, so that the inclinometer can be installed in a good measurement position. After the adjustment is completed, it is locked and fixed by each locking piece, so that the freezing hole inclinometer base frame maintains a stable structure and achieves an accurate measurement effect. The freezing hole inclinometer base frame has a simple structure, convenient adjustment and good stability.

[0019] In the freezing hole inclinometer base frame of the present invention, the positioning ruler can be slidably arranged on the fixing seat along the radial direction of the fixing sleeve, and the positioning ruler is arranged along the radial direction of the fixing sleeve and can be adjusted by sliding along the radial direction of the fixing sleeve. The position of the buckle can be accurately determined by the scale on the positioning ruler, so that the fixing sleeve and the freezing hole inclinometer tube are accurately aligned. After the alignment adjustment is completed, the position of the positioning ruler is locked by the locking member, that is, the position of the fixing sleeve is locked. The buckle mechanism has a simple structure and is convenient and quick to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the freezing hole inclinometer base frame of the present invention.

[0021] Figure 2 It is a structural schematic diagram of a fixed sleeve of a freezing hole inclinometer base frame of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the buckle mechanism of the freezing hole inclinometer base frame of the present invention.

[0023] Figure 4 It is a structural schematic diagram of a telescopic adjustment rod group of a freezing hole inclinometer base frame of the present invention.

[0024] Figure 5 It is a structural schematic diagram of a base of a freezing hole inclinometer base frame of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the fine adjustment mechanism of the freezing hole inclinometer base frame of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the locking assembly of the freezing hole inclinometer base frame of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the locking mechanism of the freezing hole inclinometer base frame of the present invention.

[0028] Fig. 9 It is a usage state diagram of the freezing hole inclinometer base frame of the present invention.

[0029] The symbols in the figure represent:

[0030] 1. Fixed sleeve; 11. Fourth locking piece; 2. Inclinometer; 3. Base; 31. Level bubble; 4. Cantilever; 41. First locking piece; 42. Second locking piece; 5. Telescopic adjustment rod group; 51. Main rod; 52. Sliding rod; 53. Fine adjustment mechanism; 531. Fine adjustment knob; 532. Transmission wheel group; 5321. Locking gear; 5322. Intermediate gear; 5323. Differential gear; 5324. Adjustment gear; 5325. First control gear; 5326. Second control gear; 533. Travel gear; 534. Sliding rack; 54 , locking assembly; 541, box body; 542, locking rod; 5421, limiting groove; 543, limiting frame; 5431, limiting protrusion; 5432, unlocking button; 544, latching tooth; 545, pressing portion; 546, first elastic reset member; 547, second elastic reset member; 6, third locking member; 7, buckle mechanism; 71, positioning ruler; 711, adjusting rack; 72, buckle; 73, fixing seat; 731, locking member; 732, adjusting knob; 8, freezing hole inclinometer tube; 9, locking mechanism; 91, locking knob; 92, tightening sheet. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figures 1 to 9 An embodiment of a freezing hole inclinometer base frame of the present invention is shown, which includes a fixed sleeve 1 and a base 3 for installing an inclinometer 2. Cantilevers 4 are hinged on both sides of the fixed sleeve 1, and telescopic adjustment rod groups 5 are hinged on the cantilevers 4. The base 3 is hinged on each telescopic adjustment rod group 5. A first locking member 41 is provided between the cantilever 4 and the fixed sleeve 1, a second locking member 42 is provided between the cantilever 4 and the telescopic adjustment rod group 5, and a third locking member 6 is provided between the telescopic adjustment rod group 5 and the base 3. A plurality of snap mechanisms 7 for snapping in a freezing hole inclinometer tube 8 and radially adjustable along the fixed sleeve 1 are provided on the circumferential side of one end of the fixed sleeve 1, and a level bubble 31 is provided on the base 3.

[0033] When in use, the fixed sleeve 1 is sleeved on the freezing hole inclinometer tube 8 (the freezing hole inclinometer tube 8 is inserted into the freezing hole), the end of the freezing hole inclinometer tube 8 is buckled on each buckle mechanism 7, and the buckle mechanism 7 is used to adjust the center radially along the fixed sleeve 1, and then, by adjusting the angle of the cantilever 4 and the telescopic adjustment rod group 5 and adjusting the telescopic position of the telescopic adjustment rod group 5, the base 3 is adjusted to a horizontal state and is in a specified position, and then the first locking piece 41, the second locking piece 42 and the third locking piece 6 are locked to fix the relative positions of the fixed sleeve 1, the cantilever 4, the telescopic adjustment rod group 5 and the base 3, thereby fixing the base 3 in a horizontal state, and then the inclinometer 2 is installed on the base 3. Through the telescopic adjustment rod group 5, the freezing hole inclinometer tube 8 and the fixed sleeve 1 can be quickly aligned (the center lines of the two coincide), which is conducive to subsequent accurate measurement. Through the rotation of the cantilever 4 and the telescopic adjustment rod group 5 and the horizontal measurement function of the level bubble 31, the horizontality of the base 3 can be quickly adjusted. Through the telescopic adjustment function of the telescopic adjustment rod group 5, it is convenient to translate the position of the base 3 so that the inclinometer 2 can be installed in a good measurement position. After the adjustment is completed, it is locked and fixed by each locking piece, so that the freezing hole inclinometer base frame maintains a stable structure and achieves an accurate measurement effect. The freezing hole inclinometer base frame has a simple structure, convenient adjustment and good stability.

[0034] In this embodiment, Figure 3 As shown, the buckle mechanism 7 includes a positioning ruler 71, a buckle 72 and a fixed seat 73. The fixed seat 73 is fixed on the fixed sleeve 1. The positioning ruler 71 can be slidably arranged on the fixed seat 73 along the radial direction of the fixed sleeve 1. The buckle 72 is arranged at one end of the positioning ruler 71 facing the center of the fixed sleeve 1. The fixed seat 73 is provided with a locking member 731 for locking the positioning ruler 71. The positioning ruler 71 can be slidably arranged on the fixed seat 73 along the radial direction of the fixed sleeve 1, and the positioning ruler 71 is arranged along the radial direction of the fixed sleeve 1 and can be adjusted along the radial direction of the fixed sleeve 1. The position of the buckle 72 can be accurately determined by the scale on the positioning ruler 71, so that the fixed sleeve 1 and the freezing hole inclinometer tube 8 are accurately aligned. After the alignment adjustment is completed, the position of the positioning ruler 71 is locked by the locking member 731, that is, the position of the fixed sleeve 1 is locked. The buckle mechanism 7 has a simple structure and is convenient and quick to adjust. Specifically, the snap-fit ​​member 72 includes a slot with an opening toward the fixed sleeve 1, which facilitates the insertion of the end of the freezing hole inclinometer tube 8; the fixing seat 73 is detachably fixed to the fixed sleeve 1, such as by bolts, to facilitate the removal and replacement of the snap-fit ​​mechanism 7.

[0035] In this embodiment, Figure 3As shown, the positioning ruler 71 is provided with an adjustment rack 711, and the fixing seat 73 is provided with an adjustment knob 732, which is engaged with the adjustment rack 711. By rotating the adjustment knob 732, the adjustment rack 711 is rotated, and the adjustment rack 711 can drive the positioning ruler 71 to slide, which has a simple structure and is easy to adjust.

[0036] In this embodiment, Figure 1 and Figure 2 As shown, the fixed sleeve 1 is provided with a fourth locking member 11 for locking the freezing hole inclinometer tube 8. After the fixed sleeve 1 is centered and adjusted, the fourth locking member 11 is locked on the freezing hole inclinometer tube 8, so that the position of the fixed sleeve 1 relative to the freezing hole inclinometer tube 8 is more stable. Specifically, the fourth locking member 11 is a locking screw, which is penetrated on the peripheral wall of the fixed sleeve 1 and is threadedly connected to the fixed sleeve 1.

[0037] In this embodiment, Figure 1 and Figure 4 As shown, the telescopic adjustment rod group 5 includes a main rod 51 and a sliding rod 52, the main rod 51 is hinged with the cantilever 4, the second locking member 42 is arranged between the main rod 51 and the cantilever 4, the sliding rod 52 is slidably arranged on the main rod 51, the base 3 is hinged with the sliding rod 52, the third locking member 6 is arranged between the sliding rod 52 and the base 3, and a fine adjustment mechanism 53 for slidingly adjusting the sliding rod 52 is arranged between the main rod 51 and the sliding rod 52. Specifically, the main rod 51 is colinear with the cantilever 4. The sliding rod 52 can slide on the main rod 51 through the fine adjustment mechanism 53, so that the base 3 can be translated and adjusted.

[0038] In this embodiment, the fine-tuning mechanism 53 includes a fine-tuning knob 531, a transmission wheel set 532, and a travel gear 533, all of which are arranged on the main rod 51. The fine-tuning knob 531 is linked to the travel gear 533 through the transmission wheel set 532. A sliding rack 534 is arranged on the slide bar 52, and the sliding rack 534 is meshed with the travel gear 533. When the fine-tuning knob 531 is rotated, the fine-tuning knob 531 drives the travel gear 533 to rotate through the transmission action of the transmission wheel set 532, and the travel gear 533 pushes the sliding rack 534 to move, thereby driving the slide bar 52 to slide. The structure is simple and the adjustment is convenient.

[0039] In this embodiment, Figure 6As shown, there are two sliding racks 534 and two traveling gears 533, and the two traveling gears 533 are respectively meshed with the two sliding racks 534, and the transmission wheel group 532 includes a locking gear 5321, an intermediate gear 5322, a differential gear 5323, a turning gear 5324, a first control gear 5325 and a second control gear 5326, all of which are arranged on the main rod 51, and the fine-tuning knob 531, the locking gear 5321, the intermediate gear 5322, the differential gear 5323, the turning gear 5324, the first control gear 5325 and a traveling gear 533 are meshed in sequence, and the other traveling gear 533 and the differential gear 5323 are both meshed with the second control gear 5326, and a locking component 54 capable of locking the locking gear 5321 is provided on the main rod 51. The fine-tuning knob 531 can make the slide bar 52 slide a small distance through the transmission action of the transmission wheel group 532 of the structure, so as to achieve the effect of micro-adjustment, so that the base 3 can be positioned more accurately. In addition, the slide bar 52 and the main rod 51 are connected by two sets of sliding racks 534 and the running gear 533, so that the relative movement between the two is more stable, so that the base 3 can translate more stably.

[0040] In this embodiment, Figure 6 and Figure 7 As shown, the locking assembly 54 includes a box body 541 fixed on the main rod 51, a locking rod 542 slidably arranged on the box body 541 and a limiting frame 543 movably arranged on the box body 541, the locking rod 542 is provided with a latching tooth 544 at one end facing the locking gear 5321, and a pressing portion 545 at the other end, a first elastic reset member 546 is provided between the locking rod 542 and the box body 541, a limiting protrusion 5431 is provided on the limiting frame 543, a limiting groove 5421 for the limiting protrusion 5431 to be inserted into is provided on the side of the locking rod 542, an unlocking button 5432 for pushing the limiting frame 543 to separate the limiting protrusion 5431 from the limiting groove 5421, and a second elastic reset member 547 is provided between the limiting frame 543 and the box body 541.

[0041] The function of the locking assembly 54 is to fix the length of the telescopic adjustment rod set 5 through the fine adjustment knob 531. The specific process is: press the pressing portion 545 to make the locking rod 542 slide toward the locking gear 5321 under the elastic force of the first elastic reset member 546, and the locking rod 542 drives the latch 544 to move toward the locking gear 5321. During this process, the limiting protrusion 5431 slides along the side of the locking rod 542 until the limiting protrusion 5431 is clamped into the limiting groove 5421 (the limiting frame 543 clamps the limiting protrusion 5431 into the limiting groove 5421 under the elastic force of the second elastic reset member 547). At this time, the latch 544 is clamped on the locking gear 5321 to limit the rotation of the locking gear 5321, thereby fixing the length of the telescopic adjustment rod set 5. Unlocking process: Press the unlocking button 5432, so that the limiting frame 543 overcomes the elastic force of the second elastic reset member 547, and drives the limiting protrusion 5431 to move to separate from the limiting groove 5421. At this time, the locking rod 542 slides away from the locking gear 5321 under the restoring force of the first elastic reset member 546, so that the locking tooth 544 is separated from the locking gear 5321, thereby releasing the locking effect on the locking gear 5321. The locking assembly 54 is cleverly designed and easy to operate.

[0042] In this embodiment, Figure 4 and Figure 8 As shown, a locking mechanism 9 for locking the slide bar 52 is provided on the main rod 51. The main rod 51 and the slide bar 52 can also be locked by the locking mechanism 9 to ensure the stability of the total length of the telescopic adjustment rod group 5. Specifically, the locking mechanism 9 includes a locking knob 91 and a tightening piece 92, the locking knob 91 is threadedly connected to the main rod 51, and the tightening piece 92 is connected to the locking knob 91 to tighten the slide bar 52. The tightening piece 92 is driven to move by rotating the locking knob 91, so that the tightening piece 92 is pressed against the slide bar 52 to lock the slide bar 52, or the tightening piece 92 is separated from the slide bar 52 to release the restriction on the slide bar 52. The tightening piece 92 can be slidably arranged on the main rod 51 through a guide rod, and moves following the axial displacement of the locking knob 91.

[0043] In this embodiment, a rubber ring may be provided on the inner side of the fixed sleeve 1 to facilitate the rough positioning of the fixed sleeve 1 on the freezing hole inclinometer tube 8 .

[0044] In the freezing method drilling construction of subway section communication channels, the freezing hole drilling process needs to be measured for inclination to ensure the design position and verticality of the freezing hole. In actual applications, the freezing hole forms are different due to different working conditions. The freezing hole inclinometer tube 8 needs to be adjusted according to the freezing hole form to be suitable for a specific working condition. Its use requires applicability, accuracy, and wear resistance. An adjustable buckle mechanism 7 is arranged at the end of the fixed sleeve 1 of the present invention. The buckle mechanism 7 has a certain scope of application and can meet the use requirements of freezing hole inclinometer tubes 8 of various models and apertures in various working conditions. In order to ensure the operating accuracy, the positioning ruler 71 of the buckle mechanism 7 is arranged along the radial direction of the fixed sleeve 1. The four positioning rulers 71 serve as the positioning azimuth points of the freezing hole inclinometer tube 8. The scale on the positioning ruler 71 can accurately determine the position of the buckle 72, so that the fixed sleeve 1 and the freezing hole inclinometer tube 8 are accurately aligned. After the centering adjustment is completed, the position of the positioning ruler 71 is locked by the locking member 731, that is, the position of the fixed sleeve 1 is locked. Considering the influence of the operating environment on the buckle mechanism 7, which is used frequently, is easy to wear, and its wear resistance cannot be guaranteed, a set screw connection is adopted to connect and fix the buckle mechanism 7 to the fixed sleeve 1, so that the buckle mechanism 7 can be easily replaced after being worn.

[0045] The present invention adopts a telescopic adjustment rod group 5, which includes a main rod 51 and a sliding rod 52. A fine-tuning mechanism 53 for sliding the adjustment sliding rod 52 is provided between the two. Leveling is performed according to the level bubble 31 on the base 3. After fine-tuning, the cantilever 4 is locked by a locking member, thereby realizing the rough leveling capability of the inclinometer base frame and effectively compensating for the fine leveling of the inclinometer 2.

[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A freezing hole inclinometer support, characterized in that: The invention comprises a fixed sleeve (1) and a base (3) for mounting an inclinometer (2), wherein cantilevers (4) are hingedly connected on both sides of the fixed sleeve (1), telescopic adjustment rod groups (5) are hingedly connected to the cantilevers (4), the base (3) is hingedly connected to each telescopic adjustment rod group (5), a first locking member (41) is provided between the cantilever (4) and the fixed sleeve (1), a second locking member (42) is provided between the cantilever (4) and the telescopic adjustment rod group (5), a third locking member (6) is provided between the telescopic adjustment rod group (5) and the base (3), and a plurality of buckling mechanisms (7) for buckling a freezing hole inclinometer tube (8) and capable of being adjusted radially along the fixed sleeve (1) are provided on the circumferential side of one end of the fixed sleeve (1), The base (3) is provided with a level bubble (31), the buckle mechanism (7) comprises a positioning ruler (71), a buckle member (72) and a fixing seat (73), the fixing seat (73) being fixed on the fixing sleeve (1), the positioning ruler (71) being slidably arranged on the fixing seat (73) along the radial direction of the fixing sleeve (1), the buckle member (72) being arranged at one end of the positioning ruler (71) facing the center of the fixing sleeve (1), the fixing seat (73) being provided with a locking member (731) for locking the positioning ruler (71), the positioning ruler (71) being provided with a positioning rack (711), the fixing seat (73) being provided with a positioning knob (732), the positioning knob (732) and the positioning rack (711) being connected to each other. 711), the telescopic adjustment rod group (5) comprises a main rod (51) and a sliding rod (52), the main rod (51) is hinged to the cantilever (4), the second locking member (42) is arranged between the main rod (51) and the cantilever (4), the sliding rod (52) is slidably arranged on the main rod (51), the base (3) is hinged to the sliding rod (52), the third locking member (6) is arranged between the sliding rod (52) and the base (3), a fine adjustment mechanism (53) for slidingly adjusting the sliding rod (52) is arranged between the main rod (51) and the sliding rod (52), the fine adjustment mechanism (53) comprises a fine adjustment knob (531), a transmission wheel group (532) and a travel gear (533) all arranged on the main rod (51), The fine-tuning knob (531) is linked to the travel gear (533) via a transmission wheel set (532); a sliding rack (534) is provided on the slide rod (52); the sliding rack (534) meshes with the travel gear (533); two sliding racks (534) are provided; two travel gears (533) are provided; the two travel gears (533) respectively mesh with the two sliding racks (534); the transmission wheel set (532) comprises a locking gear (5321), an intermediate gear (5322), a differential gear (5323), a direction adjustment gear (5324), a first control gear (5325), and a second control gear (5326), all of which are provided on the main rod (51);The fine-tuning knob (531), the locking gear (5321), the intermediate gear (5322), the differential gear (5323), the direction adjustment gear (5324), the first control gear (5325) and a traveling gear (533) are meshed in sequence, and the other traveling gear (533) and the differential gear (5323) are both meshed with the second control gear (5326). The main rod (51) is provided with a locking assembly (54) capable of locking the locking gear (5321). The locking assembly (54) comprises a box (541) fixed on the main rod (51), a locking rod (542) slidably arranged on the box (541) and a limit frame (543) movably arranged on the box (541). The locking assembly (54) comprises a housing (541) fixed on the main rod (51), a locking rod (542) slidably arranged on the box (541) and a limit frame (543) movably arranged on the box (541). A latching tooth (544) is provided at one end of the rod (542) facing the locking gear (5321), and a pressing portion (545) is provided at the other end. A first elastic reset member (546) is provided between the locking rod (542) and the box (541). A limiting protrusion (5431) is provided on the limiting frame (543). A limiting groove (5421) for the limiting protrusion (5431) to be inserted is provided on the side of the locking rod (542). An unlocking button (5432) for pushing the limiting frame (543) to separate the limiting protrusion (5431) from the limiting groove (5421) is provided on the limiting frame (543). A second elastic reset member (547) is provided between the limiting frame (543) and the box (541).

2. The freezing hole inclinometer base according to claim 1, characterized in that: The fixed sleeve (1) is provided with a fourth locking member (11) for locking the freezing hole inclinometer tube (8).

3. The freezing hole inclinometer base according to claim 1, characterized in that: The main rod (51) is provided with a locking mechanism (9) for locking the sliding rod (52).

4. The freezing hole inclinometer base according to claim 3, characterized in that: The locking mechanism (9) comprises a locking knob (91) and a pressing piece (92); the locking knob (91) is threadedly connected to the main rod (51); the pressing piece (92) is connected to the locking knob (91) and is used to press against the sliding rod (52).

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