Foundation bearing capacity detection equipment for highway construction

Abstract

The invention is suitable for the technical field of highway construction equipment, and provides foundation bearing capacity detection equipment for highway construction. Comprising a frame; the feeler lever is arranged on the frame in an up-down sliding mode, and the guide rod is arranged on the frame in an up-down sliding mode; the bottom of the guide rod is connected with a guide sleeve, and the probe rod is arranged under the guide sleeve. The power mechanism is mounted on the frame and is used for driving the guide rod to slide up and down in a reciprocating manner; the lifting connecting structure is used for automatically pulling out the detected probe rod from soil, the lifting connecting structure comprises a rotating ring and two guide parts, the rotating ring is elastically and rotatably arranged on the outer side of the guide sleeve in a sleeving mode, the two guide parts are fixedly installed on the frame, and the guide parts are arranged on the outer side of the probe rod in a central symmetry mode; and a plurality of mounting rotating shafts are rotationally mounted on the rotating ring in an array manner. By arranging the lifting connecting structure, the probe rod can be automatically pulled out after detection is completed, manual pulling out in the prior art is avoided, and operation is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of highway construction equipment, in particular to a foundation bearing capacity detection device for highway construction. Background Art

[0002] Highway foundation bearing capacity testing refers to a series of scientific tests and evaluations on the bearing capacity of foundation soil layers during highway construction.

[0003] Prior art A foundation bearing capacity detection device and detection method for highway construction (patent application number: CN202411092704.6), including a lightweight probe and a mobile installation frame for movably installing the lightweight probe, the lightweight probe includes a probe rod, a probe threadedly installed at the bottom end of the probe rod, a hammer seat threadedly installed at the top of the probe rod, a guide rod screwed on the upper side of the hammer seat, a heavy hammer slidably sleeved on the guide rod, and an extension rod screwed on the top end of the guide rod, the bottom end of the extension rod is integrally provided with a connecting protrusion, the hammer seat and the heavy hammer are both arranged on the lower side of the mobile installation frame, and the extension rod is movably penetrated by the middle of the mobile installation frame. The bottom of the mobile installation frame is equipped with a plurality of movable wheels; the lower side of the mobile installation frame is foldably connected with a triangular support frame, and the triangular support frame is used to support and stabilize the mobile installation frame and is also connected with the sliding guide of the probe rod; the top of the mobile installation frame is equipped with a winch that uses a wire rope to pull the heavy hammer upward; the triangular support frame includes three outer movable rods that are rotatably connected along the outer edge of the bottom of the mobile installation frame, and each of the outer movable rods is rotatably connected to a connecting rod on the opposite side of the middle part, and each of the outer movable rods can be rotated and folded upward, and the outer side of the mobile installation frame is respectively provided with a plurality of clamping parts that can bind and clamp the three outer movable rods and their connecting rods. After the detection is completed, the probe rod needs to be manually pulled out, which is troublesome to operate. In order to solve this technical problem, a foundation bearing capacity detection device for highway construction is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a foundation bearing capacity detection device for highway construction to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A foundation bearing capacity detection device for highway construction, comprising: a frame;

[0007] The probe rod is set on the frame for sliding up and down movement.

[0008] A guide rod is slidably arranged on the frame up and down;

[0009] The bottom of the guide rod is connected with a guide sleeve, and the probe rod is arranged directly below the guide sleeve;

[0010] A power mechanism is installed on the frame, and is used to drive the guide rod to slide reciprocally up and down;

[0011] and a lifting connection structure, wherein the lifting connection structure is used to automatically pull out the probe rod that has completed the detection from the soil.

[0012] This solution provides a lifting connection structure so that the probe rod can be automatically pulled out after the detection is completed, avoiding the need for manual pulling out in the prior art, and the operation is more convenient.

[0013] As a further solution of the present invention: the lifting connection structure includes a rotating ring elastically rotatably sleeved on the outside of the guide sleeve and two guide members fixedly installed on the frame, the guide members are symmetrically arranged on the outside of the probe rod, a plurality of mounting shafts are rotatably installed in an array on the rotating ring, a matching rod is installed at the bottom of the mounting shaft, an inwardly concave step is provided on the lower side of the top of the probe rod, a first deflection mechanism for driving the mounting shaft to deflect is also provided between the rotating ring and the guide sleeve, guide pins are symmetrically provided on the outside of the rotating ring, the guide member is used to drive the rotating ring to deflect when the guide sleeve is in a low position, and a one-way lock groove is also provided on the guide member, and the one-way lock groove is used to limit the guide sleeve from falling when the probe rod is pulled out.

[0014] Specifically, when the frame of the initial pile body stops at the position to be inspected, the lower end of the probe rod is in contact with the ground, and the probe rod and the guide rod are both in a high position. Then the power mechanism works to drive the guide rod to slide back and forth up and down, and the guide sleeve at the bottom of the guide rod reciprocates and hammers the top of the probe rod. When the probe rod drops to a low position, the measurement is completed. At this time, the guide pin on the rotating ring drives the rotating ring to deflect under the guiding action of the guide member. The deflection of the rotating ring drives the installation shaft to deflect through the first deflection mechanism, so that the matching rod whose bottom was originally installed on the outside of the probe rod is deflected, so that the matching rod rotates close to one end of the probe rod to just below the step at the top of the probe rod. At this time, the power mechanism continues to drive the guide rod to rise and then drives the guide sleeve to rise, and the guide sleeve drives the rotating ring and the matching rod to rise. The end of the matching rod close to the probe rod is in contact with the step, thereby driving the probe rod to move upward and pull the probe rod out of the soil.

[0015] As a further solution of the present invention: the guide member includes a vertical rod and a guide groove arranged at the bottom of the vertical rod, the guide groove is inclined, the upper end of the guide groove is arranged on the first side of the guide member, the lower end of the guide groove is arranged on the second side of the guide member, and a one-way locking rod is also arranged at the lower end, and the one-way locking groove is arranged on the second side surface of the guide member.

[0016] As a further solution of the present invention: one end of the one-way locking rod is rotatably mounted on the upper side of the guide groove.

[0017] As a further solution of the present invention: the first deflection mechanism includes a first gear fixedly mounted on the top of the mounting shaft and a plurality of tooth segments cooperating with each first gear, the first gear is arranged inside the rotating ring, the tooth segments are fixedly mounted on the outside of the guide sleeve, and the first gear is meshed with adjacent tooth segments.

[0018] As a further solution of the present invention: an elastic member is sleeved on the outer side of the first gear, and two ends of the elastic member are respectively fixedly mounted on the rotating ring and the guide sleeve.

[0019] As a further solution of the present invention: the power mechanism includes a rack arranged on either side and an incomplete gear rotatably arranged on the frame, and the incomplete gear is meshed with the adjacent rack.

[0020] As a further solution of the present invention: racks are provided on both sides of the guide rod, and there are two incomplete gears, which are respectively meshed with adjacent racks, and the two incomplete gears rotate in opposite directions.

[0021] As a further solution of the present invention: sliding keys are fixedly installed on the front and rear sides of the guide rod, two sliding grooves are arranged on the frame, and the sliding key is slidably arranged in an adjacent sliding groove.

[0022] As a further solution of the present invention: a guide sleeve is further provided on the frame, the probe rod is arranged through the guide sleeve, a position sensor is further provided on the guide sleeve, and a counter is also installed on the frame, and the counter is electrically connected to the position sensor.

[0023] Compared with the prior art, the beneficial effect of the present invention is that by providing a lifting connection structure, the probe rod can be automatically pulled out after the detection is completed, avoiding the need for manual pulling out in the prior art, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0026] Figure 3 The present invention is a schematic structural diagram of a guide sleeve in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0027] Figure 4 The present invention is a schematic diagram of the matching structure of a probe rod and a rotating ring in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0028] Figure 5The present invention is a schematic structural diagram of a guide member in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0029] Figure 6 The present invention is a schematic diagram of the installation structure of a one-way locking rod in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0030] Figure 7 The present invention is a schematic structural diagram of a guide rod in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0031] Figure 8 The present invention is a schematic diagram of the structure of a power mechanism in a foundation bearing capacity detection device for highway construction according to an embodiment of the present invention.

[0032] In the figure: 1-frame, 2-support wheel, 3-probe rod, 4-guide sleeve, 5-guide rod, 6-power mechanism, 7-counter, 8-position sensor, 9-lifting connection structure, 10-rotating ring, 11-guide pin, 12-elastic member, 13-installation shaft, 14-first gear, 15-tooth segment, 16-matching rod, 17-incomplete gear, 18-rack, 19-drive motor, 20-matching gear, 21-rotation shaft, 22-sliding key, 23-slide groove, 24-guide groove, 25-one-way locking rod, 26-locking groove, 27-guide sleeve, 28-guide member, 29-step, 30-pin shaft, 31-second elastic member, 32-installation hole, 33-limiting protrusion, 34-limiting groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figures 1 to 8 , a structural diagram of a foundation bearing capacity detection device for highway construction provided by Example 1 of the present invention, the foundation bearing capacity detection device for highway construction, comprising: a frame 1, a probe rod 3, a guide rod 5 and a power mechanism 6; the probe rod 3 is slidably arranged on the frame 1, the guide rod 5 is slidably arranged on the frame 1, the bottom of the guide rod 5 is connected with a guide sleeve 4, and the probe rod 3 is arranged directly below the guide sleeve 4; the power mechanism 6 is installed on the frame 1, and the power mechanism 6 is used to drive the guide rod 5 to slide reciprocatingly up and down; it also includes a lifting connection structure 9, and the lifting connection structure 9 is used to automatically pull out the probe rod 3 that has completed the detection from the soil.

[0036] Specifically, the lifting connection structure 9 includes a rotating ring 10 elastically rotatably sleeved on the outside of the guide sleeve 4 and two guide members 28 fixedly mounted on the frame 1. The guide members 28 are symmetrically arranged on the outside of the probe rod 3. A plurality of mounting shafts 13 are rotatably mounted on the rotating ring 10. A matching rod 16 is mounted at the bottom of the mounting shaft 13. A concave step 29 is provided on the lower side of the top of the probe rod 3. A first deflection mechanism for driving the mounting shaft 13 to deflect is also provided between the rotating ring 10 and the guide sleeve 4. Guide pins 11 are symmetrically provided on the outside of the rotating ring 10. The guide members 28 are used to drive the rotating ring 10 to deflect when the guide sleeve 4 is in a low position. A one-way lock groove 26 is also provided on the guide member 28. The one-way lock groove 26 is used to limit the guide sleeve 4 from falling when the probe rod 3 is pulled out.

[0037] Specifically, when the frame 1 of the initial pile body stops at the position to be detected, the lower end of the probe rod 3 is against the ground, and the probe rod 3 and the guide rod 5 are both in a high position. Then the power mechanism 6 works to drive the guide rod 5 to slide up and down reciprocatingly, and the guide sleeve 4 at the bottom of the guide rod 5 reciprocates to hammer the top of the probe rod 3. When the probe rod 3 drops to a low position, the measurement is completed. At this time, the guide pin 11 on the rotating ring 10 drives the rotating ring 10 to deflect under the guiding action of the guide member 28. The deflection of the rotating ring 10 is driven by the first deflection mechanism The driving installation shaft 13 is deflected, causing the matching rod 16, which was originally on the outside of the probe rod 3 at the bottom of the installation shaft 13, to deflect, causing the matching rod 16 to rotate to the bottom of the probe rod 3 to be just below the top step 29 of the probe rod 3. At this time, the power mechanism 6 continues to drive the guide rod 5 to rise and then drives the guide sleeve 4 to rise. The guide sleeve 4 drives the rotating ring 10 and the matching rod 16 to rise. The end of the matching rod 16 close to the probe rod 3 contacts the step 29, thereby driving the probe rod 3 to move upward and pull the probe rod 3 out of the soil.

[0038] like Figure 5As shown, in some embodiments, the guide member 28 includes a vertical rod and a guide groove 24 arranged at the bottom of the vertical rod, the guide groove 24 is inclined, the upper end of the guide groove 24 is arranged on the first side of the guide member 28, and the lower end of the guide groove 24 is arranged on the second side of the guide member 28, and a one-way locking rod 25 is also arranged at the lower end, and a one-way locking groove 26 is also arranged on the second side surface of the guide member 28. When testing, the guide sleeve 4 slides up and down to hammer the top of the probe rod 3, and the guide pin 11 is located on the first side of the vertical rod. When the guide sleeve 4 is close to the lowest position, the guide pin 11 slides into the upper end of the guide groove 24, and then the guide sleeve 4 continues to slide to the lower end of the guide groove 24 during the hammering process, and passes the one-way locking rod 25. At this time, the guide sleeve 4 is in the lowest position. When the guide rod 5 moves upward under the action of the power mechanism 6, it drives the guide sleeve 4 to move upward. During the movement, the guide pin 11 is always attached to the second side of the vertical rod under the action of elasticity, so that the guide pin 11 can slide into the one-way locking groove 26, thereby preventing the guide pin 11 from falling, and then preventing the guide sleeve 4 from falling; when the guide rod 5 rises to the set highest point, the power mechanism 6 stops working. At this time, the guide pin 11 is in the one-way locking groove 26, locking the positions of the guide rod 5 and the probe rod 3 so that the frame 1 can be moved.

[0039] like Figure 5 and Figure 6 As shown, in some embodiments, one end of the one-way lock rod 25 is unidirectionally rotatably mounted on the upper side of the guide groove 24. Specifically, a pin 30 is fixedly mounted on one end of the one-way lock rod 25. The pin 30 is rotatably mounted in the mounting hole on the side wall of the guide groove 24. A second elastic member 31 is sleeved on the outer side of the pin 30. The second elastic member 31 fixes the two ends on the pin 30 and the mounting hole 32 respectively. A limiting protrusion 33 is provided on the pin 31. The limiting protrusion 33 is arranged in the fan-shaped limiting groove 34 on the side wall of the mounting hole, so that the one-way lock rod 25 is unidirectionally rotatably mounted. In this way, when the guide pin 11 enters from the upper end of the guide groove 24 and then moves to the bottom position of the guide groove 24 and hits the movable end of the one-way lock rod 25, the one-way lock rod 25 is deflected, the guide pin 11 passes over the one-way lock rod 25, and the one-way lock rod 25 returns to the initial state under the action of elasticity, limiting the guide pin 11 to the second side of the vertical rod. The second elasticity may be a torsion spring.

[0040] like Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, the first deflection mechanism includes a first gear 14 fixedly mounted on the top of the mounting shaft 13 and a plurality of tooth segments 15 cooperating with each first gear 14, the first gear 14 is arranged inside the rotating ring 10, the tooth segments 15 are fixedly mounted on the outside of the guide sleeve 4, and the first gear 14 is meshed with adjacent tooth segments 15; in this way, when the rotating ring 10 is deflected relative to the guide sleeve 4 under the action of the guide pin 11, the mounting shaft 13 is driven to rotate.

[0041] like Figure 2 As shown, in some embodiments, an elastic member 12 is sleeved outside the first gear 14, and both ends of the elastic member 12 are fixedly mounted on the rotating ring 10 and the guide sleeve 4, respectively, so that the rotating ring 10 is elastically rotatably mounted on the guide sleeve 4. The elastic member 12 can be a torsion spring.

[0042] like Figure 1 As shown, in some embodiments, the frame 1 has no less than three supporting wheels 2 arranged in an array at the bottom thereof, so as to facilitate movement.

[0043] like Figure 8 As shown, in some embodiments, in order to drive the guide rod 5 to move reciprocally up and down, the power mechanism 6 includes a rack 18 arranged on either side and an incomplete gear 17 rotatably arranged on the frame 1, and the incomplete gear 17 is engaged with the adjacent rack 18, and the incomplete gear 17 rotates and intermittently engages with the rack 18, and during the engagement process, the guide rod 5 is driven to move upward by the rack 18. When the upward movement distance is completed, the incomplete gear 17 is disengaged from the rack 18, and the guide rod 5 and the guide sleeve 4 automatically fall down under the action of automatic gravity, and hit the top of the probe rod 3.

[0044] like Figure 7 As shown, in some embodiments, in order to make the up and down movement more stable, racks 18 are provided on both sides of the guide rod 5, and there are two incomplete gears 17, which are respectively meshed with adjacent racks 18, and the two incomplete gears 17 rotate in opposite directions.

[0045] In some embodiments, the incomplete gear 17 is fixedly mounted on a rotating shaft 21, and the rotating shaft 21 is rotatably mounted on the frame 1. Matching gears 20 are fixedly mounted on both rotating shafts 21, and the matching gears 20 are mounted on the rotating shafts 21. The two matching gears 20 are meshed with each other, and one of the rotating shafts 21 is transmission-connected to a driving motor 19, and the driving motor 19 provides power for the rotation of the rotating shaft 21.

[0046] In some embodiments, the guide rod 5 is also fixedly mounted with sliding keys 22 on both sides thereof, and two sliding grooves 23 are provided on the frame 1. The sliding key 22 is slidably arranged in an adjacent sliding groove 23, thereby guiding the guide rod 5 to slide up and down.

[0047] like Figure 1 As shown, in some embodiments, a guide sleeve 27 is further provided on the frame 1 , and the probe rod 3 is provided through the guide sleeve 27 .

[0048] like Figure 1 As shown, in some embodiments, the guide sleeve 27 is also provided with a position sensor 8, and the frame 1 is also provided with a counter 7, and the counter 7 is electrically connected to the position sensor 8. When the measurement starts, the counter 7 counts the number of times the guide rod 5 moves up and down. When the top of the probe rod 3 hits the position sensor 8, the position sensor 8 transmits a signal to the counter 7, and the counter 7 stops counting, thus realizing automatic counting. The counter 7 can also be provided with a communication module to transmit the measurement data.

[0049] The working principle of the present invention is:

[0050] When in use, the frame 1 is pushed to the position to be measured through the support wheel 2 at the bottom of the frame 1, and then the support wheel 2 is adjusted to the locked state, the driving motor 19 is powered on, and the driving motor 19 drives the rotating shaft 21 to drive the matching gear 20 to rotate, and the matching gear 20 drives the two incomplete gears 17 to rotate in the opposite direction. The incomplete gear 17 enables the guide rod 5 to rise and fall reciprocatingly up and down and freely fall through the rack 18, and the rising distance each time is consistent. When the guide sleeve 4 reciprocates up and down to hammer the top of the probe rod 3, the guide pin 11 is located on the first side of the vertical rod. When the guide sleeve 4 is close to the lowest position, the guide pin 11 slides into the upper end of the guide groove 24. When the guide pin 11 enters from the upper end of the guide groove 24, the guide pin 11 is deflected under the action of the guide groove 24, and then the guide pin 11 drives the rotating ring 10 to deflect relative to the guide sleeve 4. At this time, the first gear 14 moves relative to the rotating ring 10, and then the installation shaft 13 is deflected, so that the matching rod 1 whose bottom of the original installation shaft 13 is on the outside of the probe rod 3 6 is deflected, so that the matching rod 16 rotates to the bottom of the step 29 at the top of the probe rod 3 near the end of the probe rod 3, and then the guide sleeve 4 continues to slide to the lower end of the guide groove 24 during the hammering process, and passes the one-way locking rod 25. At this time, the guide sleeve 4 is in the lowest position. When the guide rod 5 moves upward under the action of the power mechanism 6, it drives the guide sleeve 4 to move upward, and the guide sleeve 4 drives the rotating ring 10 and the matching rod 16 to rise. The end of the matching rod 16 near the probe rod 3 abuts on the step 29, which drives the probe rod 3 to move upward and pull the probe rod 3 out of the soil. During the movement, the guide pin 11 is always attached to the second side of the vertical rod under the action of elasticity, so that the guide pin 11 can slide into the one-way locking groove 26, thereby preventing the guide pin 11 from falling, and further preventing the guide sleeve 4 from falling; when the guide rod 5 rises to the set highest point, the power mechanism 6 stops working. At this time, the guide pin 11 is in the one-way locking groove 26, locking the positions of the guide rod 5 and the probe rod 3 so that the frame 1 can be moved.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A foundation bearing capacity detection device for highway construction, characterized in that: include: Framework (1); The probe rod (3) is slidably mounted on the frame (1) up and down. A guide rod (5) is slidably disposed on the frame (1) up and down; The bottom of the guide rod (5) is connected to a guide sleeve (4), and the probe rod (3) is arranged directly below the guide sleeve (4); A power mechanism (6) is mounted on the frame (1), and the power mechanism (6) is used to drive the guide rod (5) to slide reciprocatingly up and down; and a lifting connection structure (9), wherein the lifting connection structure (9) is used to automatically pull the probe rod (3) that has completed the detection out of the soil.

2. A road construction foundation bearing capacity detection device according to claim 1, characterized in that: The lifting connection structure (9) comprises a rotating ring (10) elastically rotatably sleeved on the outside of the guide sleeve (4) and two guide members (28) fixedly mounted on the frame (1), the guide members (28) being centrally symmetrically arranged on the outside of the probe rod (3), a plurality of mounting shafts (13) being rotatably mounted in an array on the rotating ring (10), a matching rod (16) being mounted at the bottom of the mounting shaft (13), a concave step (29) being arranged on the lower side of the top of the probe rod (3), a first deflection mechanism for driving the mounting shaft (13) to deflect is also arranged between the rotating ring (10) and the guide sleeve (4), guide pins (11) are symmetrically arranged on the outside of the rotating ring (10), the guide members (28) are used to drive the rotating ring (10) to deflect when the guide sleeve (4) is in a low position, and a one-way locking groove (26) is also arranged on the guide member (28), and the one-way locking groove (26) is used to limit the guide sleeve (4) from falling when the probe rod (3) is pulled out.

3. A road construction foundation bearing capacity detection device according to claim 2, characterized in that: The guide member (28) comprises a vertical rod and a guide groove (24) arranged at the bottom of the vertical rod, the guide groove (24) is arranged obliquely, the upper end of the guide groove (24) is arranged on the first side of the guide member (28), the lower end of the guide groove (24) is arranged on the second side of the guide member (28), the lower end is also provided with a one-way locking rod (25), and the one-way locking groove (26) is arranged on the second side surface of the guide member (28).

4. A road construction foundation bearing capacity detection device according to claim 3, characterized in that: One end of the one-way locking rod (25) is unidirectionally rotatably mounted on the upper side of the guide groove (24).

5. The road construction foundation bearing capacity detection device according to claim 2, characterized in that: The first deflection mechanism comprises a first gear (14) fixedly mounted on the top of the mounting shaft (13) and a plurality of tooth segments (15) matched with each first gear (14); the first gear (14) is arranged inside the rotating ring (10); the tooth segments (15) are fixedly mounted on the outside of the guide sleeve (4); and the first gear (14) meshes with adjacent tooth segments (15).

6. A road construction foundation bearing capacity detection device according to claim 5, characterized in that: An elastic member (12) is also sleeved on the outer side of the first gear (14), and two ends of the elastic member (12) are respectively fixedly mounted on the rotating ring (10) and the guide sleeve (4).

7. The road construction foundation bearing capacity detection device according to claim 1, characterized in that: The power mechanism (6) comprises a rack (18) arranged on either side and an incomplete gear (17) rotatably arranged on the frame (1), wherein the incomplete gear (17) meshes with the adjacent rack (18).

8. The road construction foundation bearing capacity detection device according to claim 7, characterized in that: The guide rod (5) is provided with racks (18) on both sides thereof, and there are two incomplete gears (17). The incomplete gears (17) are respectively meshed with adjacent racks (18), and the two incomplete gears (17) rotate in opposite directions.

9. A road construction foundation bearing capacity detection device according to claim 8, characterized in that: The guide rod (5) is also fixedly provided with sliding keys (22) on both the front and rear sides. Two sliding grooves (23) are provided on the frame (1). The sliding key (22) is slidably arranged in an adjacent sliding groove (23).

10. The road construction foundation bearing capacity detection device according to claim 9, characterized in that: The frame (1) is also provided with a guide sleeve (27), the probe rod (3) is arranged through the guide sleeve (27), a position sensor (8) is also provided on the guide sleeve (27), and a counter (7) is also installed on the frame (1), and the counter (7) is electrically connected to the position sensor (8).

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