CN114960487A

CN114960487A - Safety device is used in engineering geology reconnaissance

Info

Publication number: CN114960487A
Application number: CN202210639942.9A
Authority: CN
Inventors: 王金辉; 王兴红; 翟明见; 柴梦达
Original assignee: Anhui Fuyang Surveying Institute Co ltd
Current assignee: Anhui Fuyang Surveying Institute Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-08-30
Anticipated expiration: 2042-06-08
Also published as: CN114960487B

Abstract

The application discloses engineering safety device for geological survey relates to geological survey protective apparatus technical field, and it includes the guard plate, install the fixed plate on the guard plate, the fixed plate with the guard plate is articulated each other, the fixed plate with install bracing piece and lifter between the guard plate, the bracing piece install in on the fixed plate, the lift chamber has been seted up to the top surface of bracing piece, the one end slidable mounting of lifter in the lift intracavity, the slider is installed to the other end of lifter, install the guide arm on the guard plate, slider slidable mounting in on the guide arm, be provided with in the bracing piece and be used for the drive the lifter is along vertical gliding actuating mechanism. This application has the effect that the reconnaissance personnel of being convenient for adjusted the inclination of guard plate according to domatic inclination.

Description

Safety device is used in engineering geology reconnaissance

Technical Field

The application relates to a geological survey protective equipment technical field especially relates to a safety device is used in engineering geological survey.

Background

Geological prospecting personnel need carry out detailed survey and drawing to each department of construction site at the in-process that will carry out the geological prospecting, including ground or domatic rock composition, domatic inclination, the crack texture of rock, the degree of weathering of rock etc. need erect relevant surveying and mapping instrument between ground and domatic usually, like total powerstation, surveyor's level, rock coring instrument, sonar detector etc..

In order to reduce the influence of falling rocks to reconnaissance personnel and surveying instrument, reconnaissance personnel set up the guard plate usually between domatic and surveying instrument for prevent falling rocks on domatic and reconnaissance personnel or surveying instrument's emergence contact, but reconnaissance personnel are not convenient for usually according to domatic inclination, adjust the inclination of guard plate.

Disclosure of Invention

In order to make things convenient for reconnaissance personnel to adjust the inclination of guard plate according to domatic inclination, this application provides a safety device for engineering geology reconnaissance.

The application provides a pair of safety device is used in engineering geology reconnaissance adopts following technical scheme:

the utility model provides a safety device is used in engineering geology reconnaissance, includes the guard plate, install the fixed plate on the guard plate, the fixed plate with the guard plate is articulated each other, the fixed plate with install bracing piece and lifter between the guard plate, the bracing piece install in on the fixed plate, the lift chamber has been seted up to the top surface of bracing piece, the one end slidable mounting of lifter in the lift intracavity, the slider is installed to the other end of lifter, install the guide arm on the guard plate, slider slidable mounting in on the guide arm, be provided with in the bracing piece and be used for the drive the lifter is along vertical gliding actuating mechanism.

Through above-mentioned technical scheme, when the inclination of reconnaissance personnel needs adjustment guard plate, through actuating mechanism drive lifter along vertical movement for the lifter promotes the guard plate and rotates along the pin joint of guard plate and fixed plate, thereby can adjust the inclination of guard plate according to domatic inclination, makes the guard plate can protect surveying instrument and reconnaissance personnel effectively like this.

In the process that the lifting rod pushes the protection plate to rotate, the lifting rod pushes the sliding block to slide along the guide rod, and therefore interference of the sliding block and the lifting rod on rotation of the protection plate is reduced.

The present application may be further configured in a preferred example to: the driving mechanism comprises a screw rod, a driving shaft, a first bevel gear and a second bevel gear, the screw rod is rotatably installed in the lifting cavity, the lifting rod is in threaded connection with the screw rod, a through hole is formed in the peripheral surface of the supporting rod and communicated with the lifting cavity, the driving shaft is rotatably installed in the through hole, one end of the driving shaft extends out of the supporting rod, the other end of the driving shaft extends into the lifting cavity, a bevel gear coaxial shaft is connected with one end of the driving shaft extending into the lifting cavity, the second bevel gear is coaxially connected with the screw rod, and the first bevel gear and the second bevel gear are meshed with each other.

Through above-mentioned technical scheme, when the reconnaissance personnel need adjust the inclination of guard plate, through rotating the drive shaft, the drive shaft drives bevel gear one and rotates, and bevel gear one drives bevel gear two and rotates, and bevel gear two drive lead screw rotates, and screw drive lifter is along vertical slip for the lifter can promote the guard plate and rotate, thereby can adjust the inclination of guard plate.

The present application may be further configured in a preferred example to: offer the confession on the guard plate the first groove of accomodating that the fixed plate was accomodate, the guide arm install in accomodate in the groove one, offer the confession on the fixed plate the bracing piece with accomodate groove two that the lifter was accomodate, the bracing piece rotate install in accomodate in the groove two, the lifter demountable installation in the slider.

Through above-mentioned technical scheme, after the reconnaissance personnel accomplished the reconnaissance operation, at first with the slider from the lifter separation, then through rotating the drive shaft for the lifter slides to the lift intracavity, rotates the bracing piece again to accomodating the groove two in, rotates the fixed plate to accomodating the groove one at last, has reduced the shared space of this device like this, thereby is convenient for carry of this device.

The present application may be further configured in a preferred example to: the fixing plate is internally provided with a cavity which is communicated with the second accommodating groove, a limiting lock pin is arranged in the cavity in a sliding manner, the peripheral surface of the supporting rod is provided with a limiting groove, and a driving assembly which is used for matching the limiting lock pin to be inserted in the limiting groove is arranged in the fixing plate.

Through above-mentioned technical scheme, when the reconnaissance personnel need protect through this device, rotate the fixed plate to accomodate groove one earlier outside, then rotate the bracing piece to accomodate the groove two outside, after reconnaissance personnel rotate the bracing piece to accomodate groove two outside, peg graft in the spacing inslot through drive assembly with spacing lockpin, accomplish the fixed of bracing piece, so not only reduced when reconnaissance personnel rotate the drive shaft, the pivoted possibility takes place for the bracing piece, still promoted the stability of bracing piece.

The present application may be further configured in a preferred example to: the driving assembly comprises a spring, a baffle and a sliding plate, the baffle is fixedly connected with the limiting lock pin, the sliding plate is slidably mounted on the limiting lock pin, the spring is mounted between the baffle and the sliding plate, one end of the spring is fixedly connected with the baffle, and the other end of the spring is fixedly connected with the sliding plate.

Through above-mentioned technical scheme, at the in-process that the reconnaissance personnel rotated the bracing piece, promote the sliding plate to bracing piece one side, the spring is in by compressed state at this in-process, and when the spacing groove was just to spacing lockpin, spacing lockpin slides and insert in the spacing groove to bracing piece place one side under the spring action of spring to accomplish the fixed of bracing piece.

The present application may be further configured in a preferred example to: the support rod is provided with a linkage gear, the sliding plate is provided with a rack, and the linkage gear is meshed with the rack.

Through the technical scheme, in the process that the reconnaissance personnel rotate the supporting rod outwards, the linkage gear on the supporting rod also rotates along with the supporting rod, the linkage gear drives the rack to move towards one side close to the supporting rod, the rack drives the sliding plate to move towards one side close to the supporting rod, at the moment, the sliding plate compresses the spring due to the fact that the limiting lock pin abuts against the supporting rod, when the limiting groove is opposite to the limiting lock pin, the limiting lock pin slides towards one side where the supporting rod is located and is inserted into the limiting groove under the elastic action of the spring, and therefore fixing of the supporting rod is completed.

The present application may be further configured in a preferred example to: the peripheral surface of the fixed plate is provided with an unlocking groove which is communicated with the cavity, an unlocking rod is arranged in the unlocking groove in a sliding mode, and the unlocking rod is fixedly connected with the limiting lock pin.

Through above-mentioned technical scheme, when the reconnaissance personnel need rotate the bracing piece to accomodating two inslots, at first tractive unblock lever, the unblock lever drives spacing lockpin and slides to the one side of keeping away from the bracing piece for spacing lockpin breaks away from the spacing inslot, in order to relieve the fixed of spacing lockpin to the bracing piece, can rotate the bracing piece to accomodating two inslots this moment, accomplishes accomodating of bracing piece.

The application may be further configured in a preferred example to: the fixing plate is provided with anchoring holes, the anchoring holes penetrate through the fixing plate, inserting rods are inserted into the anchoring holes, and the inserting rods are detachably mounted on the fixing plate.

Through above-mentioned technical scheme, after reconnaissance personnel rotated the fixed plate outside accommodating groove, passed anchor hole with the inserted bar and inserted and locate subaerially, reduced this device and taken place the possibility of displacement subaerially.

To sum up, the application comprises the following beneficial technical effects:

1. the lifting rod is driven by the driving mechanism to move vertically, so that the lifting rod pushes the protection plate to rotate along a hinge point of the protection plate and the fixing plate, and the inclination angle of the protection plate can be adjusted according to the inclination angle of the slope;

2. after the reconnaissance personnel finish the reconnaissance operation, firstly separating the sliding block from the lifting rod, then enabling the lifting rod to slide towards the lifting cavity by rotating the driving shaft, then rotating the supporting rod into the second accommodating groove, and finally rotating the fixing plate into the first accommodating groove, so that the occupied space of the device is reduced, and the carrying of the device is facilitated;

3. at the in-process that reconnaissance personnel rotated the bracing piece, spacing lockpin can be pegged graft in spacing inslot automatically, has so not only reduced when reconnaissance personnel rotate the drive shaft, and the bracing piece takes place pivoted possibility, has still promoted the stability of bracing piece.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application, mainly illustrating the construction of a guard plate and a fixing plate;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1, illustrating primarily the slider and guide bar configuration;

FIG. 3 is a schematic sectional view taken along the direction B-B in FIG. 1, mainly illustrating the configurations of a screw, a drive shaft, a first bevel gear and a second bevel gear;

FIG. 4 is a schematic sectional view taken along the direction C-C in FIG. 1, mainly illustrating the construction of the anchoring holes, the placement grooves, and the interlocking gears;

FIG. 5 is an enlarged schematic view of section D of FIG. 4, illustrating primarily the configuration of the stop plate, spring, slide plate and limit stop;

fig. 6 is an enlarged schematic view of a portion E in fig. 1, mainly illustrating the configuration of the unlocking lever and the unlocking slot.

Description of reference numerals:

1. a protection plate; 11. a guide bar; 12. a first accommodating groove; 2. a fixing plate; 21. a second accommodating groove; 22. a cavity; 23. a limit lock pin; 231. a rack; 24. unlocking the groove; 241. an unlocking lever; 25. an anchoring hole; 251. inserting a rod; 26. a placement groove; 3. a support bar; 31. a lifting cavity; 32. a through hole; 33. a limiting groove; 4. a lifting rod; 41. a slider; 5. a drive mechanism; 51. a lead screw; 52. a drive shaft; 521. a hand wheel; 53. a first bevel gear; 54. a second bevel gear; 6. a drive assembly; 61. a spring; 62. a baffle plate; 63. a sliding plate; 7. a rotating shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses safety device for engineering geology reconnaissance. Referring to fig. 1, a safety device for engineering geological investigation, including guard plate 1, install two fixed plates 2 on the guard plate 1, two fixed plates 2 are located same one side of guard plate 1, and two fixed plates 2 all articulate each other with guard plate 1, because the structure of two fixed plates 2 is the same, only expand the description below to one of them fixed plate 2 and corresponding structure.

Refer to fig. 1 and fig. 2 and show, install bracing piece 3 and lifter 4 between fixed plate 2 and the guard plate 1, the cross section of bracing piece 3 and lifter 4 all is square, the one end of bracing piece 3 is circular-arcly, and bracing piece 3 is circular-arc one end and rotates and install on fixed plate 2, the lift chamber 31 has vertically been seted up to the top surface of bracing piece 3, the transversal square of personally submitting in lift chamber 31, vertical slidable mounting is followed to the one end of lifter 4 in lift chamber 31, the other end of lifter 4 articulates there is slider 41, slider 41 articulates in lifter 4 through bolt detachable, fixedly connected with guide arm 11 on the guard plate 1, slider 41 is along guide arm 11's axial slidable mounting in guide arm 11.

Referring to fig. 1 and 3, a driving mechanism 5 for driving the lifting rod 4 to slide in the vertical direction is disposed in the support rod 3, and the driving mechanism 5 includes a rotary screw 51, a driving shaft 52, a first bevel gear 53, and a second bevel gear 54. The lead screw 51 is vertically arranged, the bottom of the lead screw 51 is rotatably arranged on the inner wall of the bottom surface of the lifting cavity 31, and the lifting rod 4 is in threaded connection with the lead screw 51. The peripheral surface of the support rod 3 is provided with a through hole 32 communicated with the lifting cavity 31, the through hole 32 is horizontally arranged, the drive shaft 52 is rotatably arranged in the through hole 32, one end of the drive shaft 52 extends out of the support rod 3, one end of the drive shaft 52 extending out of the support rod 3 is provided with a hand wheel 521, the other end of the drive shaft 52 extends into the lifting cavity 31, the first bevel gear 53 is coaxially connected with one end of the drive shaft 52 extending into the lifting cavity 31, the second bevel gear 54 is coaxially connected with the screw rod 51, and the first bevel gear 53 and the second bevel gear 54 are meshed with each other.

Need be according to domatic inclination when the reconnaissance personnel, when adjusting the inclination of guard plate 1, through rotating hand wheel 521, hand wheel 521 drives drive shaft 52 and rotates, drive shaft 52 drives bevel gear 53 and rotates, bevel gear 53 drives bevel gear two 54 and rotates, bevel gear two 54 drive lead screw 51 rotates, lead screw 51 drives lifter 4 and follows vertical slip, make lifter 4 can promote guard plate 1 and rotate, thereby can adjust the inclination of guard plate 1 according to domatic inclination, make guard plate 1 can protect surveying instrument and reconnaissance personnel effectively.

Referring to fig. 1 and 4, a first accommodating groove 12 for accommodating the fixing plate 2 is formed in a side wall of the protection plate 1 close to the fixing plate 2, the guide rod 11 is fixedly connected in the first accommodating groove 12 along a length direction of the first accommodating groove 12, and the fixing plate 2 can rotate to the first accommodating groove 12. The lateral wall of one side that fixed plate 2 is close to guard plate 1 offers and supplies two 21 in the groove of accomodating that bracing piece 3 and lifter 4 accomodate, and bracing piece 3 is close to the one end fixedly connected with pivot 7 of fixed plate 2, and bracing piece 3 rotates through pivot 7 to be installed in accomodating two 21 in the groove. The inner wall of the second accommodating groove 21 is provided with a placing groove 26, and the placing groove 26 is used for accommodating the hand wheel 521.

After the reconnaissance operation is accomplished to the reconnaissance personnel, at first remove the bolt between lifter 4 and the slider 41, in order to remove the connection of lifter 4 and slider 41, then rotate hand wheel 521, make lifter 4 remove in to lift chamber 31, until lifter 4 and bracing piece 3's effective length is less than the length of accomodating groove two 21, again with bracing piece 3 two rotate to accomodating in groove two 21, and hand wheel 521 can rotate to standing groove 26 along with bracing piece 3 in, rotate to accomodating groove one 12 with fixed plate 2 at last, the shared space of this device has been reduced like this, not only be convenient for the carry of this device, but also reduced the impaired possibility of this device in the transportation.

Referring to fig. 1, 5 and 6, a cavity 22 communicated with the second accommodating groove 21 is formed in the fixing plate 2, a limiting lock pin 23 is slidably mounted in the cavity 22 along the length direction of the cavity 22, a limiting groove 33 for inserting the limiting lock pin 23 is formed in the peripheral surface of the support rod 3, a driving assembly 6 used for matching the limiting lock pin 23 to be inserted into the limiting groove 33 is arranged in the fixing plate 2, and a reconnaissance person inserts the limiting lock pin 23 into the limiting groove 33 through the driving assembly 6 and then rotates the hand wheel 521, so that the possibility that the support rod 3 rotates when the reconnaissance person rotates the driving shaft 52 is reduced, and the stability of the support rod 3 is improved. The peripheral surface of the fixed plate 2 is provided with an unlocking groove 24 communicated with the cavity 22, an unlocking rod 241 is arranged in the unlocking groove 24 in a sliding mode along the length direction of the limiting lock pin 23, one end of the unlocking rod 241 is fixedly connected to the limiting lock pin 23, a surveyor can drive the limiting lock pin 23 to slide towards one side far away from the supporting rod 3 by drawing the unlocking rod 241, so that the limiting lock pin 23 is separated from the limiting groove 33, and the fixing of the limiting lock pin 23 on the supporting rod 3 is released.

Referring to fig. 4 and 5, the driving assembly 6 includes a spring 61 sleeved on the limit lock pin 23, a baffle plate 62 fixedly connected to the limit lock pin 23, and a sliding plate 63 slidably mounted on the limit lock pin 23, wherein a sliding direction of the sliding plate 63 is identical to a length direction of the limit lock pin 23, the spring 61 is located between the baffle plate 62 and the sliding plate 63, one end of the spring 61 is fixedly connected to the baffle plate 62, and the other end of the spring 61 is fixedly connected to the sliding plate 63. The sliding plate 63 is fixedly connected with a rack 231, the rotating shaft 7 of the support rod 3 is provided with a linkage gear, the linkage gear is positioned above the rack 231, and the linkage gear and the rack 231 are meshed with each other.

In the process that the reconnaissance personnel rotate the support rod 3 outwards, the linkage gear on the support rod 3 also rotates along with the linkage gear, the linkage gear drives the rack 231 to move towards the side close to the support rod 3, the rack 231 drives the sliding plate 63 to move towards the side close to the support rod 3, at the moment, the sliding plate 63 compresses the spring 61 as the limiting lock pin 23 slides along the arc-shaped outer wall at the bottom of the support rod 3, and when the limiting groove 33 is right opposite to the limiting lock pin 23, the limiting lock pin 23 slides towards the side where the support rod 3 is located and is inserted into the limiting groove 33 under the elastic action of the spring 61, so that the fixing of the support rod 3 is completed.

Referring to fig. 1 and 4, an anchoring hole 25 is vertically formed in the fixing plate 2, the anchoring hole 25 penetrates through the fixing plate 2, an inserting rod 251 is inserted into the anchoring hole 25, and the inserting rod 251 is detachably mounted on the fixing plate 2. Reconnaissance personnel pass anchor hole 25 and insert through with inserted bar 251 and locate subaerially, have reduced the subaerial possibility of taking place the displacement of this device to can effectively protect reconnaissance personnel and surveying instrument. After the reconnaissance worker completes the reconnaissance work, the insertion rod 251 can be drawn out of the anchoring hole 25 to facilitate the storage of the fixing plate 2.

The implementation principle of the embodiment is as follows: when the surveyor needs to adjust the inclination angle of the protection plate 1 according to the inclination angle of the slope, firstly, the fixing plate 2 is rotated to the position outside the first accommodating groove 12, and then the inserting rod 251 penetrates through the anchoring hole 25 and is inserted into the ground;

then the supporting rod 3 is rotated to the outside of the second accommodating groove 21, in the rotating process of the supporting rod 3, the linkage gear on the supporting rod 3 also rotates along with the rotation, the linkage gear drives the rack 231 to move towards one side close to the supporting rod 3, the rack 231 drives the sliding plate 63 to move towards one side close to the supporting rod 3, at this time, as the limiting lock pin 23 slides along the arc-shaped outer wall at the bottom of the supporting rod 3, the sliding plate 63 compresses the spring 61, and when the limiting groove 33 is opposite to the limiting lock pin 23, the limiting lock pin 23 slides towards one side of the supporting rod 3 under the elastic force of the spring 61 and is inserted into the limiting groove 33, so that the fixing of the supporting rod 3 is completed.

Then, the hand wheel 521 is rotated, the hand wheel 521 drives the driving shaft 52 to rotate, the driving shaft 52 drives the first bevel gear 53 to rotate, the first bevel gear 53 drives the second bevel gear 54 to rotate, the second bevel gear 54 drives the screw rod 51 to rotate, the screw rod 51 drives the lifting rod 4 to vertically slide, then the lifting rod 4 is connected with the sliding block 41 through a bolt, the installation of the device is completed, and at the moment, a reconnaissance worker can adjust the inclination angle of the protection plate 1 by rotating the hand wheel 521.

And after the reconnaissance personnel accomplished the investigation operation, at first take the inserted bar 251 out from anchor hole 25, demolish the bolt between lifter 4 and the slider 41 again, then through antiport hand wheel 521, in the lift chamber 31 in with lifter 4 slides, in tractive unblock pole 241 after that, in order to relieve the fixed of spacing lockpin 23 to bracing piece 3, at this moment, rotate bracing piece 3 to in the two 21 of accomodating grooves of fixed plate 2, rotate fixed plate 2 to in the one 12 of accomodating groove of guard plate 1, thereby reduce the shared space of this device, so not only portable, it is difficult impaired still not.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited in sequence, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a safety device is used in engineering geology reconnaissance which characterized in that: including guard plate (1), install fixed plate (2) on guard plate (1), fixed plate (2) with guard plate (1) is articulated each other, fixed plate (2) with install bracing piece (3) and lifter (4) between guard plate (1), bracing piece (3) install in on fixed plate (2), lift chamber (31) have been seted up to the top surface of bracing piece (3), the one end slidable mounting of lifter (4) in lift chamber (31), slider (41) are installed to the other end of lifter (4), install guide arm (11) on guard plate (1), slider (41) slidable mounting in on guide arm (11), be provided with in bracing piece (3) and be used for the drive lifter (4) are along vertical gliding actuating mechanism (5).

2. The safety protection device for engineering geological investigation of claim 1, characterized in that: the driving mechanism (5) comprises a screw rod (51), a driving shaft (52), a first bevel gear (53) and a second bevel gear (54), the screw rod (51) is rotatably arranged in the lifting cavity (31), the lifting rod (4) is connected with the screw rod (51) in a threaded manner, the circumferential surface of the supporting rod (3) is provided with a through hole (32), the through hole (32) is communicated with the lifting cavity (31), the driving shaft (52) is rotatably arranged in the through hole (32), one end of the driving shaft (52) extends out of the supporting rod (3), the other end of the driving shaft (52) extends into the lifting cavity (31), the bevel gear I (53) is coaxially connected with one end of the driving shaft (52) extending into the lifting cavity (31), the second bevel gear (54) is coaxially connected to the lead screw (51), and the first bevel gear (53) and the second bevel gear (54) are meshed with each other.

3. The safety device for engineering geological investigation of claim 1, wherein: offer the confession on guard plate (1) accomodate groove one (12) that fixed plate (2) were accomodate, guide arm (11) install in accomodate in groove one (12), seted up the confession on fixed plate (2) bracing piece (3) with accomodate groove two (21) that lifter (4) were accomodate, bracing piece (3) rotate install in accomodate in groove two (21), lifter (4) demountable installation in slider (41).

4. The safety device for engineering geological investigation of claim 3, wherein: a cavity (22) is formed in the fixing plate (2), the cavity (22) is communicated with the second accommodating groove (21), a limiting lock pin (23) is arranged in the cavity (22) in a sliding mode, a limiting groove (33) is formed in the peripheral surface of the supporting rod (3), and a driving assembly (6) which is used for being matched with the limiting lock pin (23) to be inserted into the limiting groove (33) is arranged in the fixing plate (2).

5. The safety device for engineering geological investigation of claim 4, wherein: the driving assembly (6) comprises a spring (61), a baffle plate (62) and a sliding plate (63), the baffle plate (62) is fixedly connected to the limiting lock pin (23), the sliding plate (63) is slidably mounted on the limiting lock pin (23), the spring (61) is mounted between the baffle plate (62) and the sliding plate (63), one end of the spring (61) is fixedly connected to the baffle plate (62), and the other end of the spring (61) is fixedly connected to the sliding plate (63).

6. The safety device for engineering geological investigation of claim 5, wherein: the support rod (3) is provided with a linkage gear, the sliding plate (63) is provided with a rack (231), and the linkage gear is meshed with the rack (231).

7. The safety device for engineering geological investigation of claim 6, wherein: the peripheral surface of the fixing plate (2) is provided with an unlocking groove (24), the unlocking groove (24) is communicated with the cavity (22), an unlocking rod (241) is arranged in the unlocking groove (24) in a sliding mode, and the unlocking rod (241) is fixedly connected with the limiting lock pin (23).

8. The safety device for engineering geological investigation of claim 1, wherein: an anchoring hole (25) is formed in the fixing plate (2), the anchoring hole (25) penetrates through the fixing plate (2), an inserting rod (251) is inserted into the anchoring hole (25), and the inserting rod (251) is detachably mounted on the fixing plate (2).