Reaming equipment for environmental geological survey

Abstract

The utility model discloses chambering equipment for environmental geology survey. The chambering equipment comprises a frame, a fixing frame, a power piece, a driving piece, an adjusting piece, a connecting piece and an inserting cone. The device has the advantages that by rotating the threaded rod, the threaded rod moves downwards along the inner wall of the connecting frame, the other end of the threaded rod drives the connecting plate to move synchronously, the two inserting cones move downwards along with the threaded rod, the connecting plate drives the inserting cones to penetrate through the protective sleeve to be inserted into a soil layer along with gradual descending of the height, and therefore the device is connected with the ground; the sliding button is shifted to rotate towards one side, then the sliding button is lifted upwards, the sliding seat is driven by the connecting ring to move synchronously, the fixing block drives the clamping block to be separated from the inner side of the clamping groove while moving along with the sliding button, the clamping block and the fixing groove are separated, after the sliding button reaches one end of the fixing groove, the sliding button is shifted to rotate towards one side, the fixing groove limits the sliding button, and then the drill bit is rotated. And the threaded block moves in the axis direction of the connecting block, the threaded block and the threaded groove are separated, and dismounting of the drill bit is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological survey technical field, especially a reaming equipment for environmental geological survey. BACKGROUND

[0002] Environmental geological survey is through the investigation and study of regional geological environment conditions and environmental geological problems caused by natural geological action and human activities, and provides scientific basis for regional economic and social sustainable development, ecological environment construction and geological environment protection. In the environmental geological survey process, drilling sampling and soil internal analysis operation are usually carried out. However, the existing drilling aperture is small, and the detection equipment cannot be put into the drilling interior, so that reaming operation is needed, the existing reaming equipment for environmental geological survey in the use process, in order to respond to the change of different strata, or equipment faces different use demand, sometimes needs to replace different types of drill bit, makes equipment can work according to demand, and usually drill bit uses multiple bolts to be fixed on driving mechanism, when replacing drill bit, needs to rely on tool to take off bolt in proper order, field staff is difficult to carry tool, and the overall replacement step is complicated, needs long time to complete disassembly and installation, reduces the efficiency of reaming work, and because equipment often works in complex geological environment, such as muddy, soft or inclined ground, and equipment is generally used by hand or equipped with mobile wheel, when working, the operation of equipment can produce greater vibration, and the staff cannot effectively fix the equipment through the strength of oneself, can cause the displacement of equipment, thereby affecting the smooth progress of reaming work. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above and / or existing problems in the reaming equipment for environmental geological survey, the utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model lies in that the reaming equipment for environmental geological survey in the prior art needs to replace different types of drill bits in order to cope with the changes of different strata or meet different use requirements, so that the equipment can work according to the requirements, and the drill bits are usually fixed on the driving mechanism by a plurality of bolts, so that the bolts need to be sequentially removed by means of tools when the drill bits are replaced, the staff in the field is difficult to carry tools, the overall replacement steps are complicated, a long time is needed to complete the disassembly and installation, the reaming efficiency is reduced, and the equipment is often used in complex geological environments such as muddy, soft or inclined ground, the equipment is usually used by hand or equipped with mobile wheels, the equipment runs with great vibration when working, the staff cannot effectively fix the equipment by their own strength, the equipment may be displaced, and the reaming work is affected.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a reaming equipment for environmental geological survey, which comprises a main body assembly and a connecting assembly, wherein the main body assembly comprises a vehicle frame, a fixing frame, a power component, a driving component, a guide component, a measuring component, an auxiliary component, an adjusting component, a connecting component and a plug cone, the fixing frame is fixed to the top of the vehicle frame, the power component and the driving component are arranged on the inner side of the fixing frame, the guide component and the measuring component are arranged on the outer side of the driving component, the auxiliary component and the adjusting component are arranged on the outer side of the vehicle frame, the connecting component is arranged on the inner side of the adjusting component, the plug cone is arranged on the outer side of the connecting component, and the connecting assembly is arranged on the outer side of the driving component and comprises a connecting block, a drill bit, a butt joint component, a transmission component, a spring, a limiting component, a clamping block, a clamping groove and a fixing component, the connecting block is arranged on the outer side of the driving component, the drill bit is arranged at one end of the connecting block, the butt joint component is arranged on the inner side of the drill bit and the connecting block, the transmission component and the limiting component are arranged on the inner side of the connecting block, the spring, the clamping block and the fixing component are arranged on the outer side of the transmission component, and the clamping groove is arranged on the inner wall of the drill bit and is provided with four groups.

[0007] As a preferred scheme of the reaming equipment for environmental geological survey, the guide component comprises a guide rod and a movable block, the guide rod is fixed to the bottom of the fixing frame, the movable block is arranged on the outer side of the guide rod, and the movable block is arranged on the outer side of the driving component.

[0008] As a preferred scheme of the reaming equipment for environmental geological survey, the measuring component comprises a pointer and a scale, the pointer is arranged on the outer side of the driving component, and the scale is fixed to the bottom of the fixing frame.

[0009] As a preferred scheme of the environment geological survey reaming equipment, the auxiliary part comprises a handle, a connecting seat and a bolt, the connecting seat is fixed to the top of the frame, the handle is rotated on the inner side of the connecting seat, and the bolt is threadedly connected to the inner side of the handle and the connecting seat.

[0010] As a preferred scheme of the environment geological survey reaming equipment, the adjusting part comprises a connecting frame, a screw rod, a bearing and a protective sleeve, the connecting frame is fixed to the outer side of the frame, the screw rod is threadedly connected to the inner wall of the connecting frame, the bearing is rotated at one end of the screw rod, and the protective sleeve is fixed to the bottom of the connecting frame.

[0011] As a preferred scheme of the environment geological survey reaming equipment, the connecting part comprises a connecting plate and a guide block, the connecting plate is fixed to the outer side of the bearing, two groups of guide blocks are fixedly connected to the top of the connecting plate, the two groups of guide blocks are slid on the inner wall of the connecting frame, and the bottom of the connecting plate is fixedly connected to one end of the plug cone.

[0012] As a preferred scheme of the environment geological survey reaming equipment, the connecting part comprises a connecting plate and a guide block, the connecting plate is fixed to the outer side of the bearing, two groups of guide blocks are fixedly connected to the top of the connecting plate, the two groups of guide blocks are slid on the inner wall of the connecting frame, and the bottom of the connecting plate is fixedly connected to one end of the plug cone.

[0013] As a preferred scheme of the environment geological survey reaming equipment, the transmission part comprises a sliding seat and a fixed block, the sliding seat is arranged on the outer side of the driving part, the fixed block is fixed to the outer side of the sliding seat and is provided with four groups, and the bottom of the fixed block is fixedly connected to one end of the clamping block.

[0014] As a preferred scheme of the environment geological survey reaming equipment, the limiting part comprises a sliding block and a limiting groove, the sliding block is fixed to one end of the fixed block, the limiting groove is arranged on the inner wall of the connecting block, and the outer side of the sliding block is slid on the inner side of the limiting groove.

[0015] As a preferred scheme of the environment geological survey reaming equipment, the fixing part comprises a connecting ring, a sliding button and a fixing groove, the connecting ring is rotated on the inner side of the sliding seat, the sliding button is fixed to the outer side of the connecting ring, the fixing groove is arranged on the outer side of the connecting block, and the outer side of the sliding button is slid on the inner side of the fixing groove.

[0016] The utility model discloses beneficial effect is: through the rotation screw rod, make screw rod move downward along the inner wall of connecting frame, and the other end of screw rod drives the synchronous movement of connecting plate, and guiding block is the movement path of connecting plate and is limited, and two root insertion cone also follow downward movement, along with the gradual decline of height, and connecting plate is inserted into the soil layer with insertion cone, makes equipment and ground form the connection, improves the stability of equipment operation, through the knob of dolly rotates to one side, then lifts the knob upward, through the connecting ring drive the synchronous movement of sliding seat, fixed block follows the movement, and with the card block is separated from the inside of card groove, makes them complete separation, and the knob reaches one end of fixed groove, and then the knob is rotated to one side, makes fixed groove and carries out the location to it, then rotates the drill bit, makes it move along the axial direction of connecting block, separates screw block and thread groove, completes the disassembly of drill bit, realized the quick replacement of drill bit without tool, and passed the efficiency of reaming work. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Wherein:

[0018] Figure 1 It is the overall structure diagram of the reaming equipment for environmental geological survey.

[0019] Figure 2 It is the overall structure diagram of the reaming equipment for environmental geological survey.

[0020] Figure 3 It is the adjusting piece structure diagram of the reaming equipment for environmental geological survey.

[0021] Figure 4 It is the connecting assembly structure diagram of the reaming equipment for environmental geological survey.

[0022] Figure 5 It is the fixing piece structure diagram of the reaming equipment for environmental geological survey.

[0023] The figure label: 100, main body assembly; 101, frame; 102, fixed frame; 103, power element; 104, driving element; 105, guide element; 105a, guide rod; 105b, movable block; 106, measuring element; 106a, pointer; 106b, scale; 107, auxiliary element; 107a, handle; 107b, connecting seat; 107c, bolt; 108, adjusting element; 108a, connecting frame; 108b, screw rod; 108c, bearing; 108d, protective sleeve; 109, connecting element; 109a, connecting plate; 109b, guide block; 110, plug cone; 200, connecting assembly; 201, connecting block; 202, drill bit; 203, butt joint element; 203a, threaded block; 203b, threaded groove; 204, transmission element; 204a, sliding seat; 204b, fixed block; 205, spring; 206, limiting element; 206a, sliding block; 206b, limiting groove; 207, clamping block; 208, clamping groove; 209, fixing element; 209a, connecting ring; 209b, sliding button; 209c, fixed groove. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application. Accordingly, the present application is not limited to the specific embodiments described below.

[0026] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics contained in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0027] Embodiment 1

[0028] Reference Figures 1-5 For the first embodiment of the present application, the embodiment provides a reaming device for environmental geological survey. The reaming device for environmental geological survey comprises a main body assembly 100 and a connecting assembly 200. The main body assembly 100 is used to improve the stability of the device during work, and the connecting assembly 200 is used to realize the quick replacement of the drill bit 202.

[0029] The main body assembly 100 comprises a frame 101, a fixing frame 102, a power piece 103, a driving piece 104, a guiding piece 105, a measuring piece 106, an auxiliary piece 107, an adjusting piece 108, a connecting piece 109 and a plug cone 110, the fixing frame 102 is fixed to the top of the frame 101, the power piece 103 and the driving piece 104 are arranged on the inner side of the fixing frame 102, the guiding piece 105 and the measuring piece 106 are arranged on the outer side of the driving piece 104, the auxiliary piece 107 and the adjusting piece 108 are arranged on the outer side of the frame 101, the connecting piece 109 is arranged on the inner side of the adjusting piece 108, and the plug cone 110 is arranged on the outer side of the connecting piece 109.

[0030] The frame 101 is used for bearing the equipment and facilitating the movement of the equipment, the power piece 103 is used for moving the driving piece 104, the power piece 103 is composed of a motor, a screw rod and a threaded sleeve, the motor drives the screw rod to rotate, and the threaded sleeve moves up and down along the outer side of the screw rod, the driving piece 104 is used for driving the drill bit 202 to rotate and expand the hole, the driving piece 104 is composed of a protection frame, a motor and a driving shaft, the motor is arranged on the inner side of the protection frame, and the threaded sleeve is fixed on the outer side of the protection frame, and the motor drives the driving shaft to rotate and synchronously rotates the drill bit 202, and the plug cone 110 is used for inserting into the soil layer and fixing the position of the equipment.

[0031] The connecting assembly 200 is arranged on the outer side of the driving piece 104 and comprises a connecting block 201, a drill bit 202, a butt joint piece 203, a transmission piece 204, a spring 205, a limiting piece 206, a clamping block 207, a clamping groove 208 and a fixing piece 209, the connecting block 201 is arranged on the outer side of the driving piece 104, the drill bit 202 is arranged on one end of the connecting block 201, the butt joint piece 203 is arranged on the inner side of the drill bit 202 and the connecting block 201, the transmission piece 204 and the limiting piece 206 are arranged on the inner side of the connecting block 201, the spring 205, the clamping block 207 and the fixing piece 209 are arranged on the outer side of the transmission piece 204, and the clamping groove 208 is formed in the inner wall of the drill bit 202 and is provided with four groups.

[0032] The drill bit 202 is used for expanding the hole, the spring 205 is used for pushing the transmission piece 204 to move, the clamping block 207 and the clamping groove 208 are used for fixedly connecting the connecting block 201 and the drill bit 202, and the outer side of the clamping block 207 and the inner side of the clamping groove 208 are in sliding connection.

[0033] Embodiment 2

[0034] Reference Figure 1 , Figure 2 and Figure 3 , which is a second embodiment of the utility model, and is based on the previous embodiment.

[0035] Specifically, the guide piece 105 comprises a guide rod 105a and a movable block 105b, the guide rod 105a is fixed to the bottom of the fixed frame 102, and the movable block 105b slides outside the guide rod 105a and is arranged outside the driving piece 104.

[0036] The movable block 105b is fixed outside the protection frame of the driving piece 104, and when the driving piece 104 moves, the movable block 105b slides along the outside of the guide rod 105a, the guide rod 105a limits the movement path of the movable block 105b, and at the same time improves the stability of the driving piece 104 during work.

[0037] Specifically, the measuring piece 106 comprises a pointer 106a and a scale 106b, the pointer 106a is arranged outside the driving piece 104, and the scale 106b is fixed to the bottom of the fixed frame 102.

[0038] When the driving piece 104 moves, the pointer 106a fixed outside the motor protection frame will follow the movement, and through the reference of the scale 106b, the distance of the drill bit 202 moving downward can be known, so as to judge the depth of the reaming, and then the environmental geology can be conveniently investigated.

[0039] Specifically, the auxiliary piece 107 comprises a handle 107a, a connecting seat 107b and a bolt 107c, the connecting seat 107b is fixed to the top of the vehicle frame 101, the handle 107a rotates inside the connecting seat 107b, and the bolt 107c is threadedly connected to the inside of the handle 107a and the connecting seat 107b.

[0040] When the bolt 107c is loosened, the connection angle of the handle 107a and the connecting seat 107b can be adjusted, so that the equipment can be used by operators with different heights, and after the bolt 107c is tightened, the handle 107a is fixed inside the connecting seat 107b.

[0041] Specifically, the adjusting piece 108 comprises a connecting frame 108a, a screw rod 108b, a bearing 108c and a protective sleeve 108d, the connecting frame 108a is fixed to the outside of the vehicle frame 101, the screw rod 108b is threadedly connected to the inner wall of the connecting frame 108a, the bearing 108c rotates at one end of the screw rod 108b, and the protective sleeve 108d is fixed to the bottom of the connecting frame 108a.

[0042] Since the inner wall of the connecting frame 108a is provided with a threaded hole, when the screw rod 108b is rotated, the screw rod 108b moves up and down along the inner wall of the connecting frame 108a, the arrangement of the bearing 108c enables the screw rod 108b to rotate without interfering with the connecting plate 109a, and the protective sleeve 108d can shield the outside of the plug cone 110 when the plug cone 110 is idle, preventing the plug cone 110 from scratching the worker.

[0043] Specifically, the connecting piece 109 comprises a connecting plate 109a and a guide block 109b, the connecting plate 109a is fixed to the outer side of the bearing 108c, the top of the connecting plate 109a is fixedly connected with two groups of guide blocks 109b, the two groups of guide blocks 109b are slidably arranged on the inner wall of the connecting frame 108a, and the bottom of the connecting plate 109a is fixedly connected with one end of the plug cone 110.

[0044] The guide block 109b is slidably arranged in the hole groove formed in the inner wall of the connecting frame 108a, so as to guide the moving direction of the connecting plate 109a, and the connecting plate 109a moves up and down and carries the plug cone 110 to be inserted into or separated from the soil layer.

[0045] Embodiment 3

[0046] With reference to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 , which is the third embodiment of the utility model, and is based on the first two embodiments.

[0047] Specifically, the connecting piece 109 comprises a connecting plate 109a and a guide block 109b, the connecting plate 109a is fixed to the outer side of the bearing 108c, the top of the connecting plate 109a is fixedly connected with two groups of guide blocks 109b, the two groups of guide blocks 109b are slidably arranged on the inner wall of the connecting frame 108a, and the bottom of the connecting plate 109a is fixedly connected with one end of the plug cone 110.

[0048] The drill bit 202 is rotated and moved along the axis direction of the connecting block 201, the threaded block 203a and the threaded groove 203b are separated, and the drill bit 202 is disassembled.

[0049] Specifically, the transmission piece 204 comprises a sliding seat 204a and a fixed block 204b, the sliding seat 204a is arranged on the outer side of the driving piece 104, the fixed block 204b is fixed to the outer side of the sliding seat 204a and is provided with four groups, and the bottom of the fixed block 204b is fixedly connected with one end of the clamping block 207.

[0050] The sliding seat 204a is slidably arranged on the outer side of the driving shaft of the motor of the driving piece 104, and one end of the spring 205 is fixed to the top of the sliding seat 204a.

[0051] Specifically, the limiting piece 206 comprises a sliding block 206a and a limiting groove 206b, the sliding block 206a is fixed to one end of the fixed block 204b, the limiting groove 206b is formed in the inner wall of the connecting block 201, and the outer side of the sliding block 206a is slidably arranged in the inner side of the limiting groove 206b.

[0052] When the fixed block 204b is moved by the sliding seat 204a, the sliding block 206a will follow the inner side of the limiting groove 206b to slide, the limiting groove 206b limits the moving path of the sliding block 206a, and at the same time, the sliding seat 204a can only move vertically up and down along the limiting groove 206b.

[0053] Specifically, the fixing member 209 includes a connecting ring 209a, a sliding button 209b and a fixing groove 209c, the connecting ring 209a rotates on the inner side of the sliding seat 204a, the sliding button 209b is fixed on the outer side of the connecting ring 209a, and the fixing groove 209c is arranged on the outer side of the connecting block 201, and the outer side of the sliding button 209b slides in the inner side of the fixing groove 209c.

[0054] The upper and lower ends of the fixing groove 209c are respectively provided with a hole groove capable of fixing the sliding button 209b, the hole groove is a branch of the fixing groove 209c, when the sliding button 209b is lifted upwards, after the sliding button 209b reaches one end of the fixing groove 209c, the sliding button 209b is rotated to one side, so that the fixing groove 209c limits it.

[0055] In use, when the environmental geology needs to be investigated, the device is first moved to the working site, then the screw rod 108b is rotated to move downward along the inner wall of the connecting frame 108a, the other end of the screw rod 108b drives the connecting plate 109a to move synchronously, the guiding block 109b limits the moving path of the connecting plate 109a, and the two insertion pins 110 also move downward, as the height gradually decreases, the connecting plate 109a drives the insertion pins 110 to penetrate the protective sleeve 108d and insert into the soil layer, so that the device is connected with the ground, and the stability of the device in operation is improved, when the drill bit 202 needs to be replaced, the sliding button 209b is first rotated to one side, then the sliding button 209b is lifted upwards, the sliding seat 204a is driven to move synchronously by the connecting ring 209a, the fixed block 204b moves synchronously, the clamping block 207 is separated from the inner side of the clamping groove 208, so that they are separated, after the sliding button 209b reaches one end of the fixing groove 209c, the sliding button 209b is rotated to one side, so that the fixing groove 209c limits it, then the drill bit 202 is rotated to move along the axis direction of the connecting block 201, the threaded block 203a and the threaded groove 203b are separated, the drill bit 202 is disassembled, then the drill bit 202 to be replaced is aligned with the threaded block 203a, the connection between the drill bit 202 and the connecting block 201 is completed by rotating and tightening, then the sliding button 209b is rotated, the bottom of the sliding button 209b is no longer limited, the elastic force of the spring 205 is released, the sliding seat 204a is pushed to move downward, the clamping block 207 is driven to enter the inner side of the clamping groove 208 by the fixed block 204b, at this time, the drill bit 202 cannot be rotated transversely, so that the drill bit 202 and the connecting block 201 are fixedly connected, then the sliding button 209b is rotated, the position of the sliding button 209b is fixed, and the replacement is completed.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An underreaming apparatus for environmental geological investigations, characterized by: The utility model relates to a kind of drilling machine, including, Main body assembly (100), including frame (101), fixed frame (102), power piece (103), driving piece (104), guide piece (105), measuring piece (106), auxiliary piece (107), adjusting piece (108), connecting piece (109) and plug cone (110), the fixed frame (102) is fixed on the top of frame (101), the power piece (103) and driving piece (104) are both arranged in the inside of fixed frame (102), the guide piece (105) and measuring piece (106) are both arranged in the outside of driving piece (104), the auxiliary piece (107) and adjusting piece (108) are both arranged in the outside of frame (101), the connecting piece (109) is arranged in the inside of adjusting piece (108), and the plug cone (110) is arranged in the outside of connecting piece (109), and; Connecting assembly (200) is arranged in the outside of driving piece (104), including connecting block (201), drill bit (202), butt joint piece (203), transmission piece (204), spring (205), limiting piece (206), clamping block (207), clamping groove (208) and fixed piece (209), the connecting block (201) is arranged in the outside of driving piece (104), the drill bit (202) is arranged in one end of connecting block (201), the butt joint piece (203) is arranged in the inside of drill bit (202) and connecting block (201), the transmission piece (204) and limiting piece (206) are both arranged in the inside of connecting block (201), the spring (205), clamping block (207) and fixed piece (209) are all arranged in the outside of transmission piece (204), and the clamping groove (208) is opened in the inner wall of drill bit (202) and is provided with four groups.

2. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The guide piece (105) includes guide rod (105a) and movable block (105b), the guide rod (105a) is fixed to the bottom of the fixed frame (102), the movable block (105b) slides in the outside of the guide rod (105a), and the movable block (105b) is arranged in the outside of the driving piece (104).

3. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The measuring piece (106) includes pointer (106a) and scale (106b), the pointer (106a) is arranged in the outside of the driving piece (104), and the scale (106b) is fixed to the bottom of the fixed frame (102).

4. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The auxiliary piece (107) includes handle (107a), connecting seat (107b) and bolt (107c), the connecting seat (107b) is fixed to the top of the frame (101), the handle (107a) rotates in the inside of the connecting seat (107b), and the bolt (107c) is threadedly connected in the inside of the handle (107a) and the connecting seat (107b).

5. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The adjusting piece (108) comprises a connecting frame (108a), a screw rod (108b), a bearing (108c) and a protective sleeve (108d), the connecting frame (108a) is fixed to the outer side of the frame (101), the screw rod (108b) is threadedly connected to the inner wall of the connecting frame (108a), the bearing (108c) is rotatable at one end of the screw rod (108b), and the protective sleeve (108d) is fixed to the bottom of the connecting frame (108a).

6. The borehole enlargement apparatus for environmental geologic investigations of claim 5, wherein: The connecting piece (109) comprises a connecting plate (109a) and a guide block (109b), the connecting plate (109a) is fixed to the outer side of the bearing (108c), the top of the connecting plate (109a) is fixedly connected with two groups of guide blocks (109b), the two groups of guide blocks (109b) are both slidingly arranged on the inner wall of the connecting frame (108a), and the bottom of the connecting plate (109a) is fixedly connected with one end of the plug cone (110).

7. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The connecting piece (109) comprises a connecting plate (109a) and a guide block (109b), the connecting plate (109a) is fixed to the outer side of the bearing (108c), the top of the connecting plate (109a) is fixedly connected with two groups of guide blocks (109b), the two groups of guide blocks (109b) are both slidingly arranged on the inner wall of the connecting frame (108a), and the bottom of the connecting plate (109a) is fixedly connected with one end of the plug cone (110).

8. The borehole enlargement apparatus for environmental geologic investigations of claim 1, wherein: The transmission piece (204) comprises a sliding seat (204a) and a fixed block (204b), the sliding seat (204a) is arranged on the outer side of the driving piece (104), the fixed block (204b) is fixed to the outer side of the sliding seat (204a) and is provided with four groups, and the bottom of the fixed block (204b) is fixedly connected with one end of the clamping block (207).

9. The environmental geologic investigation hole enlarging apparatus as recited in claim 8, wherein: The limiting piece (206) comprises a sliding block (206a) and a limiting groove (206b), the sliding block (206a) is fixed to one end of the fixed block (204b), the limiting groove (206b) is formed in the inner wall of the connecting block (201), and the outer side of the sliding block (206a) is slidingly arranged on the inner side of the limiting groove (206b).

10. The borehole enlargement apparatus for environmental geologic investigations of claim 8, wherein: The fixing piece (209) comprises a connecting ring (209a), a sliding button (209b) and a fixing groove (209c), the connecting ring (209a) is rotatable on the inner side of the sliding seat (204a), the sliding button (209b) is fixed to the outer side of the connecting ring (209a), the fixing groove (209c) is formed on the outer side of the connecting block (201), and the outer side of the sliding button (209b) is slidingly arranged on the inner side of the fixing groove (209c).

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