Digital engineering investigation in-situ testing device

Abstract

The utility model discloses a digital engineering investigation in-situ testing device, which relates to the technical field of geological drilling and comprises a drill tower and a hydraulic lifting device, a driving device is mounted on the hydraulic lifting device, and a striking device is connected onto the hydraulic lifting device through the driving device; the striking device comprises a guide rod, a hammering seat, a standard penetration hammer and a lifting block, and a hammer lifting device is arranged between the standard penetration hammer and the lifting block; according to the design, the stepped groove is formed in the guide rod to be matched with the hammer lifting device, it can be ensured that the standard penetrating hammer freely falls down to hammer the hammering base after rising to the designated position, the striking operation is completed, excessive manual operation is not needed, time and labor are saved, and safety and reliability are achieved; the problem that in traditional standard penetration operation, a standard penetration hammer needs to be lifted through winch lifting and manual rope hanging is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological drilling technology field especially relates to a digital engineering reconnaissance in situ testing device. BACKGROUND

[0002] In the engineering geological drilling process, according to standard requirement, the geological condition under different depth needs to carry out dynamic sounding test, and the geological condition is analyzed according to the sounding hammering number.

[0003] The existing standard penetration device mainly passes through manual operation winch to lift the standard penetration device when carrying out standard penetration operation, installs it to the operation position, and then carries out standard penetration operation.

[0004] In the whole operation process, need to be lifted by winch equipment installation, and need manual hanging rope, operation winch lifting, its operation process is complicated, and the safety in the installation process is poor, simultaneously also influences the field operation efficiency, for this, the utility model provides a digital engineering reconnaissance in situ testing device. UTILITY MODEL CONTENT

[0005] In view of the deficiency of prior art, the utility model provides a digital engineering reconnaissance in situ testing device, solves the problem of above background art.

[0006] In order to realize above object, the utility model is realized through the following technical scheme: a digital engineering reconnaissance in situ testing device, including the drilling tower of being installed on the drilling machine, the hydraulic lifting device of being fixedly installed on the drilling tower, the driving device of being installed on the hydraulic lifting device, and the striking device of being connected through driving device on the hydraulic lifting device;

[0007] The hydraulic lifting device includes the upper fixed seat and lower fixed seat of being installed on the top end and bottom end of the drilling tower, the standard penetration oil cylinder is arranged between the upper fixed seat and lower fixed seat, the lifting frame is further arranged between the upper fixed seat and lower fixed seat on the side surface of the drilling tower, the upper guide hole and lower guide hole are arranged on the side surface top end and bottom end of the lifting frame respectively, and the upper guide seat and lower guide seat are correspondingly arranged on the other side top end and bottom end of the lifting frame;

[0008] The striking device includes the guide rod of being arranged between the upper guide seat and lower guide seat on one side of the lifting frame, the hammering seat is connected to the bottom end of the guide rod, the standard penetration hammer is slidably connected to the lower end of the guide rod, the lifting block is further connected to the top end of the standard penetration hammer on the lower end of the guide rod, and the hammer lifting device is arranged between the standard penetration hammer and lifting block;

[0009] The hammer lifting device comprises an inner guide sleeve sleeved outside the guide rod and fixed with the lifting block, and an outer guide sleeve sleeved outside the guide rod and fixed with the top end of the standard penetration hammer, the bottom end of the inner guide sleeve extends inside the outer guide sleeve, and the lower end of the inner guide sleeve is inlaid with an inner steel ball, the inner side of the outer guide sleeve is inlaid with an outer steel ball corresponding to the inner steel ball, and notches are formed in the inner guide sleeve and the outer guide sleeve to facilitate the movement of the inner steel ball and the outer steel ball.

[0010] As a further technical scheme of the utility model, the standard penetration oil cylinder adopts a structure form that the cylinder barrel can move on the piston rod, the upper guide hole sliding sleeve is sleeved on the piston rod of the standard penetration oil cylinder, and the lower guide hole is fixed on the cylinder barrel of the standard penetration oil cylinder.

[0011] As a further technical scheme of the utility model, the guide rod is provided with a stepped groove, the upper half of the guide rod is milled into a flat shape, the top of the guide rod slidingly penetrates the upper guide seat, the top surface of the upper guide seat is provided with a guide clamping plate, the middle part of the guide clamping plate is provided with a sliding hole matched with the upper half of the guide rod, and the guide clamping plate is used for preventing the guide rod from rotating.

[0012] The bottom of the hammering seat is provided with a threaded hole, and the bottom end of the hammering seat is threadedly connected with a drill rod.

[0013] As a further technical scheme of the utility model, one side of the lifting frame is provided with a cover shell outside the striking device, the two side surfaces of the standard penetration hammer are symmetrically provided with limiting grooves, the inner wall of the cover shell is provided with guide plates corresponding to the limiting grooves, and the two side surfaces of the standard penetration hammer are slidingly connected with the guide plates through the limiting grooves.

[0014] As a further technical scheme of the utility model, the driving device comprises a driving motor installed on the outer side of the lifting frame, the inner side of the lifting frame is symmetrically provided with transmission gears at the upper end and the lower end, the two transmission gears are connected through a transmission chain, and one of the transmission gears is connected with the output end of the driving motor.

[0015] The transmission chain is provided with lifting plates corresponding to the lifting blocks at equal intervals, one end of the lifting plate is located below the lifting block, and the cross section of the lifting block is T-shaped.

[0016] As a further technical scheme of the utility model, a rotary encoder is installed on the other side surface of the lifting frame and corresponds to the driving motor at the upper end, and the rotary encoder is connected with the shaft rod in the middle of the side surface of the transmission gear.

[0017] As a further technical scheme of the utility model, the utility model further comprises a laser ranging sensor installed on the top of the drilling tower and a laser ranging sensing plate connected with the top end of the guide rod, and the laser ranging sensing plate and the top end of the guide rod are fixed through bolts.

[0018] As a further technical scheme of the utility model, the upper support installed at the lower end of the drilling tower, the lower support is installed at the bottom end of the lifting frame corresponding to the upper support, pin holes are formed on the upper support and the lower support, and a fixing pin is installed in the pin hole.

[0019] The utility model provides a kind of digital engineering reconnaissance in situ testing device, and compared with prior art has following beneficial effects:

[0020] 1, the digital engineering reconnaissance in situ testing device of the design, lifting frame and impact device can be lifted to appropriate height using hydraulic lifting device, ladder groove is formed on guide rod, and with the cooperation of hammer lifting device, it can be ensured that standard penetration hammer will freely fall and hammer to hammer seat after rising to specified position, complete impact operation, without excessive manual operation, save time and effort, and safe and reliable, solve the cumbersome problem that standard penetration is lifted by winch lifting and artificial hanging rope during traditional standard penetration operation.

[0021] 2, the digital engineering reconnaissance in situ testing device of the design, limit slot is formed on the both sides of standard penetration hammer, and with the cooperation of guide plate, it can be ensured that standard penetration hammer will not rotate when freely falling, improve its hammering stability, secondly, the upper half of guide rod is milled flat, and cooperates with guide clamping plate, to ensure the stability of guide rod lifting, avoid its rotation.

[0022] 3, the digital engineering reconnaissance in situ testing device of the design, laser ranging induction plate and laser ranging sensor are used, distance measurement can be realized, the depth value of each hammering can be recorded in real time, and hammering is automatically stopped after hammering to required depth, in addition, rotary encoder is installed on the rotating shaft of drive motor, the rotation length of transmission chain can be monitored and recorded, the number of hammering is recorded, and detection data can be displayed in real time on operation table screen, to facilitate real-time understanding of standard penetration operation progress. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of a kind of digital engineering reconnaissance in situ testing device;

[0024] Figure 2 It is the installation schematic view of hydraulic lifting device in a kind of digital engineering reconnaissance in situ testing device;

[0025] Figure 3 It is the structural schematic view of hydraulic lifting device in a kind of digital engineering reconnaissance in situ testing device;

[0026] Figure 4 It is the structural schematic view of drive device and lifting frame in a kind of digital engineering reconnaissance in situ testing device;

[0027] Figure 5It is a digital engineering reconnaissance in-situ test device hammer device installation schematic diagram;

[0028] Figure 6 It is Figure 5 The enlarged schematic view of part A in the figure;

[0029] Figure 7 It is Figure 5 The enlarged schematic view of part B in the figure.

[0030] In the figure: 1, drill tower; 2, hydraulic lifting device; 21, upper fixed seat; 22, standard penetration oil cylinder; 23, lower fixed seat; 3, lifting frame; 31, upper guide hole; 32, lower guide hole; 33, upper guide seat; 34, lower guide seat; 4, cover shell; 41, guide plate; 42, driving motor; 43, transmission gear; 44, transmission chain; 45, lifting plate; 5, laser ranging sensor; 51, laser ranging induction plate; 6, guide rod; 60, stepped groove; 61, standard penetration hammer; 62, hammer seat; 63, drill rod; 64, guide clamping plate; 7, lifting block; 71, inner guide sleeve; 72, outer guide sleeve; 73, outer steel ball; 74, inner steel ball; 8, upper support; 81, lower support; 82, fixed pin. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-2 The present application provides a kind of digital engineering reconnaissance in-situ test device technical scheme: a kind of digital engineering reconnaissance in-situ test device, including the drill tower 1 of installation on drilling machine, still include the laser ranging sensor 5 of installation on the top of drill tower 1 and the laser ranging induction plate 51 connected at the top of guide rod 6, laser ranging induction plate 51 is fixed with the top of guide rod 6 by bolt, laser ranging induction plate 51 can be adjusted in angle in horizontal direction, then fixed by bolt, it is mainly used in cooperation with laser ranging sensor 5, realizes real-time ranging, can record the depth value of each hammering once in real time, and hammering is stopped after hammering to required depth.

[0033] Further comprising an upper support 8 installed at the lower end of the drilling tower 1, and a lower support 81 installed at the bottom end of the lifting frame 3 corresponding to the upper support 8, and pin holes are formed in the upper support 8 and the lower support 81, and a fixing pin 82 is installed in the pin holes, when the fixing pin 82 is inserted into the lower support 81 and the upper support 8, the marking and penetrating device can be locked to prevent it from rotating when not in use, when in use, the fixing pin 82 is pulled out, and the marking and penetrating device is rotated to the appropriate angle, which is convenient for aligning the drilling center position.

[0034] As shown in Figure 1 and 3 , the hydraulic lifting device 2 is fixedly installed on the drilling tower 1, the hydraulic lifting device 2 comprises an upper fixed seat 21 and a lower fixed seat 23 installed at the upper end and the bottom end of the drilling tower 1, a marking and penetrating oil cylinder 22 is arranged between the upper fixed seat 21 and the lower fixed seat 23, a lifting frame 3 is arranged between the upper fixed seat 21 and the lower fixed seat 23 on the side surface of the drilling tower 1, an upper guide hole 31 and a lower guide hole 32 are arranged at the upper end and the bottom end of the side surface of the lifting frame 3, respectively, an upper guide seat 33 and a lower guide seat 34 are arranged at the other side top end and bottom end of the lifting frame 3, the marking and penetrating oil cylinder 22 adopts a structure form that the cylinder barrel can move on the piston rod, the upper guide hole 31 is slidably sleeved on the piston rod of the marking and penetrating oil cylinder 22, the lower guide hole 32 is fixed on the cylinder barrel of the marking and penetrating oil cylinder 22, and the lower guide hole 32 can adopt a two half circle clamp block design, which is convenient for installation on site, can be quickly clamped on the cylinder barrel of the marking and penetrating oil cylinder 22, and the cylinder barrel bottom of the marking and penetrating oil cylinder 22 is provided with a stepped surface, which is convenient for cooperation with the bottom of the lower guide hole 32, in use, the marking and penetrating oil cylinder 22 is extended, and the lifting frame 3 is lifted by the lower guide hole 32, at the same time, the upper guide hole 31 of the lifting frame 3 can rise linearly along the piston rod of the marking and penetrating oil cylinder 22, which can ensure the stability of the overall lifting of the lifting frame 3;

[0035] As shown in Figure 3 and 4 , a driving device is installed on the hydraulic lifting device 2, the driving device comprises a driving motor 42 installed on the outer side upper end of the lifting frame 3, a transmission gear 43 is symmetrically arranged at the upper end and the lower end inside the lifting frame 3, the two transmission gears 43 are connected by a transmission chain 44, one of the transmission gears 43 is connected with the output end of the driving motor 42, and lifting plates 45 corresponding to the lifting block 7 are distributed at equal intervals on the transmission chain 44, one end of the lifting plate 45 is located below the lifting block 7, the cross section of the lifting block 7 is T-shaped, by controlling the driving motor 42 to work, the transmission chain 44 is driven to rotate by the transmission gear 43, when the transmission chain 44 rotates, the lifting plate 45 rises, and the lifting block 7 rises along the guide rod 6, so that the lifting device is driven to move upward, when the lifting device rises to the stepped groove 60 position along the guide rod 6, the marking and penetrating hammer 61 falls and hits on the hammering seat 62, so as to hammer the drilling rod 63.

[0036] A rotary encoder is installed on the other side of the lifting frame 3 at the upper end corresponding to the driving motor 42, and the rotary encoder is connected to the shaft rod in the middle of one side of the transmission gear 43. The rotary encoder and the transmission gear 43 are both connected to the output shaft of the driving motor 42. When the driving motor 42 rotates, the rotary encoder can detect the number of rotations of the driving motor 42, so as to detect the rotation length of the transmission chain 44 in real time, record the number of hammering times, and transmit the obtained data to the controller of the drilling machine, which can be displayed on the screen of the drilling machine operation platform in real time.

[0037] As shown in Figure 3 , 5 and 7, the hydraulic lifting device 2 is connected with a striking device through a driving device. The striking device includes a guide rod 6 arranged between the upper guide seat 33 and the lower guide seat 34 on one side of the lifting frame 3. The bottom end of the guide rod 6 is connected with a hammering seat 62, and the lower end of the guide rod 6 is slidingly connected with a standard penetration hammer 61. A stepped groove 60 is formed in the guide rod 6. The upper half of the guide rod 6 is milled into a flat shape, and the top of the guide rod 6 slidingly penetrates the upper guide seat 33. The top surface of the upper guide seat 33 is installed with a guide clamping plate 64. The middle part of the guide clamping plate 64 is provided with a sliding hole matched with the upper half of the guide rod 6, which is used to prevent the guide rod 6 from rotating. When the lifting frame 3 drives the guide rod 6 to rise, the upper part of the guide rod 6 will move linearly along the sliding hole of the guide clamping plate 64, so as to ensure that the guide rod 6 will not rotate. The bottom of the hammering seat 62 is provided with a threaded hole, and the bottom end of the hammering seat 62 is threadedly connected with a drill rod 63, which facilitates the disassembly and assembly of the drill rod 63.

[0038] As shown in Figure 1 and 3 , a cover shell 4 is arranged on one side of the lifting frame 3 outside the striking device. Limiting grooves are symmetrically formed in the two side surfaces of the standard penetration hammer 61. A guide plate 41 is installed on the inner wall of the cover shell 4 corresponding to the limiting grooves. The two side surfaces of the standard penetration hammer 61 are slidingly connected with the guide plate 41 through the limiting grooves. The guide plate 41 can be used to facilitate the standard penetration hammer 61 to rise along the guide rod 6 without rotating, so as to ensure the stability of the standard penetration hammer 61 when it rises or falls.

[0039] As shown in Figure 5 and 6As shown, the lower end of the guide rod 6 is located at the top end of the driving hammer 61, and the driving hammer 61 and the lifting block 7 are provided with a hammer lifting device, the hammer lifting device comprises an inner guide sleeve 71 sleeved outside the guide rod 6 and fixed with the lifting block 7, and an outer guide sleeve 72 sleeved outside the guide rod 6 and fixed with the top end of the driving hammer 61, the bottom end of the inner guide sleeve 71 extends inside the outer guide sleeve 72, and the lower end of the inner guide sleeve 71 is embedded with an inner steel ball 74, the inner side of the outer guide sleeve 72 is embedded with an outer steel ball 73 corresponding to the inner steel ball 74, and the inner guide sleeve 71 and the outer guide sleeve 72 are both provided with a notch for the movement of the inner steel ball 74 and the outer steel ball 73, the notch can facilitate the movement of the steel ball inside, when the lifting plate 45 drives the lifting block 7 to ascend along the guide rod 6, the lifting block 7 drives the driving hammer 61 to ascend, and the inner steel ball 74 in the lifting block 7 will extrude the outer steel ball 73, and the outer steel ball 73 will be extruded outward, thereby clamping the step on the driving hammer 61, further driving the driving hammer 61 to ascend, when moving to the stepped groove 60 on the guide rod 6, the inner steel ball 74 will retract under the space action of the stepped groove 60, thereby no longer extruding the outer steel ball 73, at this time, the outer steel ball 73 retracts and no longer clamps the step on the driving hammer 61, and the driving hammer 61 is no longer limited, thereby freely falling along the guide rod 6 and hammering on the hammering seat 62, achieving one-time striking.

[0040] The working principle of the utility model is as follows: in the actual use process, the driving hammer device is installed at the upper side of the drilling tower 1, when not in use, the fixed pin 82 is used for locking and fixing;

[0041] When the driving hammer operation is needed, the fixed pin 82 is pulled out, the driving hammer device is rotated to a suitable angle, is aligned with the drilling center position, and the laser ranging induction plate 51 corresponds to the laser ranging sensor 5;

[0042] Then the drill rod 63 (the drill rod is a connecting drill rod) is screwed into the lower part of the hammering seat 62, the driving hammer oil cylinder 22 is controlled to extend, the lifting frame 3 is driven to ascend to a certain height, and then the driving hammer rod is connected below the drill rod 63;

[0043] Further, the driving hammer oil cylinder 22 is controlled to retract, the lifting frame 3 is driven to descend, at this time, the drill rod 63 drives the hammering seat 62 and the guide rod 6 to ascend out together, so that the top end of the guide rod 6 extends out of the upper guide seat 33, as shown in Figure 2 ;

[0044] Further, by controlling the rotation of the driving motor 42, the driving chain 44 is driven to rotate by the transmission gear 43, when the driving chain 44 rotates, the lifting plate 45 is lifted, the lifting plate 45 is lifted, the lifting block 7 is lifted along the guide rod 6, thereby driving the standard penetration hammer 61 to rise, at this time, the inner steel ball 74 in the lifting block 7 extrudes the outer steel ball 73, the outer steel ball 73 is extruded outward to expose, thereby clamping the step on the standard penetration hammer 61, realizing the lifting of the standard penetration hammer 61;

[0045] When the standard penetration hammer 61 moves to the stepped groove 60 on the guide rod 6, the inner steel ball 74 is retracted under the space action of the stepped groove 60, thereby no longer extruding the outer steel ball 73, at this time, the outer steel ball 73 is retracted and no longer clamps the step on the standard penetration hammer 61, the standard penetration hammer 61 is no longer limited, thereby freely falling and hammering on the hammering seat 62, realizing the impact once; moreover, the limiting groove on both sides of the standard penetration hammer 61 and the guide plate 41 are in sliding fit, which can ensure that the standard penetration hammer 61 does not rotate when it freely falls,

[0046] During the standard penetration operation, when the driving motor 42 drives the transmission gear 43 to rotate, the rotation length of the driving chain 44 is recorded by the rotary encoder, which is convenient for recording the number of hammering, and the recording data is transmitted to the controller of the drilling machine, and can be displayed on the screen of the operation table in real time;

[0047] In addition, the cooperation of the laser ranging sensor 5 at the top of the drilling tower 1 and the laser ranging sensing plate 51 can measure and record the depth value of each hammering of the standard penetration hammer 61, and automatically stop hammering after hammering to the required depth, the whole standard penetration operation process is simple to operate, and does not need too much manual operation, which saves time and effort, and is safe and reliable, and the data is recorded in real time and can be traced.

[0048] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A digital engineering survey in-situ testing device comprising a drilling tower (1) installed on a drilling rig, characterized in that, The drilling tower (1) is fixedly provided with a hydraulic lifting device (2), the hydraulic lifting device (2) is provided with a driving device, and the hydraulic lifting device (2) is connected with a striking device through the driving device; The hydraulic lifting device (2) comprises upper and lower fixed seats (21 and 23) arranged at the upper end and the bottom end of the drilling tower (1), a standard penetration oil cylinder (22) is arranged between the upper and lower fixed seats (21 and 23), and a lifting frame (3) is further arranged between the upper and lower fixed seats (21 and 23) on the side surface of the drilling tower (1); the upper end and the bottom end of the side surface of the lifting frame (3) are respectively provided with upper and lower guide holes (31 and 32), and the other side of the lifting frame (3) is correspondingly provided with upper and lower guide seats (33 and 34) at the top end and the bottom end; The striking device comprises a guide rod (6) arranged between the upper and lower guide seats (33 and 34) on one side of the lifting frame (3), the bottom end of the guide rod (6) is connected with a hammering seat (62), the lower end of the guide rod (6) is slidably connected with a standard penetration hammer (61), the lower end of the guide rod (6) is further connected with a lifting block (7) at the top end of the standard penetration hammer (61), and a hammer lifting device is arranged between the standard penetration hammer (61) and the lifting block (7); The hammer lifting device comprises an inner guide sleeve (71) sleeved on the outer portion of the guide rod (6) and fixed with the lifting block (7), and an outer guide sleeve (72) sleeved on the outer portion of the guide rod (6) and fixed with the top end of the standard penetration hammer (61); the bottom end of the inner guide sleeve (71) extends to the inner side of the outer guide sleeve (72), the lower end of the inner guide sleeve (71) is inlaid with an inner steel ball (74), the inner side of the outer guide sleeve (72) is inlaid with an outer steel ball (73) corresponding to the inner steel ball (74), and grooves are formed in the inner guide sleeve (71) and the outer guide sleeve (72) to facilitate the movement of the inner steel ball (74) and the outer steel ball (73).

2. A digital engineering survey in-situ testing device according to claim 1, characterized in that, The standard penetration oil cylinder (22) adopts a structure in which a cylinder barrel is movable on a piston rod, the upper guide hole (31) is slidably sleeved on the piston rod of the standard penetration oil cylinder (22), and the lower guide hole (32) is fixed on the cylinder barrel of the standard penetration oil cylinder (22).

3. A digitalized engineering survey in-situ testing device according to claim 1, characterized in that, A stepped groove (60) is formed in the guide rod (6), the upper half of the guide rod (6) is milled into a flat shape, the top of the guide rod (6) slidably penetrates the upper guide seat (33), the top surface of the upper guide seat (33) is provided with a guide clamping plate (64), a sliding hole is formed in the middle of the guide clamping plate (64) and matched with the upper half of the guide rod (6), and the guide clamping plate (64) is used for preventing the guide rod (6) from rotating; A threaded hole is formed in the bottom of the hammering seat (62), and a drill rod (63) is threadedly connected with the bottom end of the hammering seat (62).

4. The digitalized engineering survey in-situ testing device according to claim 1, characterized in that, A cover shell (4) is arranged on one side of the lifting frame (3) and outside the striking device, limit grooves are symmetrically formed in the two side surfaces of the standard penetration hammer (61), a guide plate (41) is arranged on the inner wall of the cover shell (4) and corresponds to the limit grooves, and the two sides of the standard penetration hammer (61) are slidably connected with the guide plate (41) through the limit grooves.

5. The digitalized engineering investigation in-situ testing device according to claim 1, characterized in that, The driving device comprises a driving motor (42) installed on the outer upper end of the lifting frame (3), the inner upper end and the lower end of the lifting frame (3) are symmetrically provided with transmission gears (43), the two transmission gears (43) are connected through a transmission chain (44), and one of the transmission gears (43) is connected with the output end of the driving motor (42); The transmission chain (44) is provided with lifting plates (45) corresponding to lifting blocks (7) at equal intervals, one end of the lifting plate (45) is located below the lifting block (7), and the cross section of the lifting block (7) is T-shaped.

6. A digital engineering survey in-situ testing device according to claim 5, characterized in that, A rotary encoder is installed on the upper end of the other side of the lifting frame (3) corresponding to the driving motor (42), and the rotary encoder is connected with the shaft rod in the middle of one side of the transmission gear (43).

7. A digitalized engineering survey in-situ testing device according to claim 1, characterized in that, It also comprises a laser ranging sensor (5) installed on the top of the drilling tower (1) and a laser ranging sensing plate (51) connected with the top end of the guide rod (6), the laser ranging sensing plate (51) is fixed with the top end of the guide rod (6) through bolts.

8. A digitalized engineering investigation in-situ testing device according to claim 1, characterized in that, It also comprises an upper support (8) installed on the lower end of the drilling tower (1), a lower support (81) installed on the bottom end of the lifting frame (3) corresponding to the upper support (8), pin holes are formed in the upper support (8) and the lower support (81), and a fixing pin (82) is installed in the pin hole.

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