Bottom supporting device applicable to multiple terrains and used for load node seismograph

Abstract

A bottom supporting device suitable for multiple terrains and used for a load node seismograph comprises a base plate, a spirit level and three cantilevers arranged at intervals, partial area of the top face of the base plate makes contact with the bottom face of the spirit level, a through installation hole is formed in the middle of the base plate, the side portion of the base plate is connected with the top ends of the cantilevers, and the cantilevers are arranged in the installation hole. The bottom end of the cantilever extends downwards in an inclined mode till the bottom end of the cantilever is connected with the inner end of the horizontal conical foot, a through fixing threaded hole is formed in the middle of the horizontal conical foot, and a fixing screw in threaded fit with the fixing threaded hole is correspondingly inserted into the fixing threaded hole; preferably, the base plate comprises an inner plate which is coaxially arranged and an outer plate which is annularly connected with the outer part of the inner plate, and the outer side of the inner plate is in running fit with the inner side surface of the outer plate through a connecting bearing. According to the design, the supporting firmness is high, the detection effect can be ensured, the limitation is low, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to a supporting device matched with a node seismograph belongs to the field of seismic exploration, especially to a bottom supporting device for load node seismograph suitable for multiple terrains. BACKGROUND

[0002] At present, the micro-oscillation detection in seismic exploration has the significant advantages of not needing a vibration source and being green and environmentally friendly, plays an important role in urban shallow underground structure detection, and is increasingly widely applied.

[0003] With the wide application of the micro-oscillation detection method, many manufacturers at home and abroad have developed node seismographs of different models and performances. However, when the node seismograph is applied, the bottom thereof needs to be connected to the ground to be detected through a supporting device. However, the bottom supporting device used by the existing node seismograph is mostly a conical base. The supporting firmness of the conical base is weak, and the quality of the ground to be detected needs to be high. For example, if the ground is not uniform, such as a soil layer containing a large amount of gravel and bedrock or an artificial hardening site, it is difficult to maintain sufficient firmness, which damages the detection effect of the node seismograph, especially in a terrain with a large slope, which is more difficult to apply.

[0004] A node seismograph is disclosed in Chinese Patent No. 202323242905.3, published on July 23, 2024. The node seismograph includes a first shell, a second shell, a load-bearing plate, and a battery module. The first shell and the second shell enclose a receiving cavity, the battery module is located in the receiving cavity, the load-bearing plate is arranged in the receiving cavity, and the load-bearing plate wraps the battery module. The load-bearing plate includes a first plate body and a second plate body arranged opposite to the two sides of the first plate body. The first plate body is perpendicular to the second plate body. The first plate body is connected to the reinforcing ribs on the inner wall of the first shell. The second plate body is connected to the reinforcing ribs on the inner wall of the second shell. The bottom of the second shell is connected to a cone. When applied, the cone is connected to the ground to be detected. Although this design can provide better protection for the battery module inside and prolong the service life of the battery module, it still has the following defects:

[0005] As described above, the design still relies on a conical base connected to the ground. The supporting firmness is weak, it is easy to shake, it may gradually tilt over time, and the quality of the ground to be detected needs to be high, which is restrictive and difficult to promote and apply.

[0006] The information disclosed in this background section is intended only to increase an understanding of the general context of the present application, and should not be taken as an acknowledgement or any form of suggestion that this information forms prior art that is already widely known in the art. SUMMARY

[0007] The utility model discloses a bottom support device for load node seismograph applicable to multiple terrains, which has the advantages of strong support firmness and weak limitation.

[0008] To achieve the above object, the utility model discloses a technical solution as follows: a bottom support device for load node seismograph applicable to multiple terrains, which comprises a base plate, a level and three cantilevers.

[0009] Part of the top surface of the base plate is in contact with the bottom surface of the level, and a through mounting hole is formed in the middle of the base plate.

[0010] The side of the base plate is connected with the top end of the cantilever, the bottom end of the cantilever extends downward obliquely until connected with the inner end of the horizontal taper foot, a through fixing screw hole is formed in the middle of the horizontal taper foot, a fixing screw threadedly matched with the fixing screw hole is inserted into the fixing screw hole, and the three cantilevers are arranged separately.

[0011] The cantilever comprises a vertical part and an inclined part, the inner side of the vertical part is connected with the side of the base plate, the bottom end of the vertical part is connected with the top end of the inclined part, and the bottom end of the inclined part is connected with the inner end of the horizontal taper foot.

[0012] The inclined part forms an inclined angle with the gravity line, and the size of the inclined angle is twenty to sixty degrees.

[0013] The fixing screw comprises a head, a shaft and a tip connected in sequence from top to bottom, and the shaft is provided with external threads on the side wall.

[0014] The shaft comprises an upper light rod, a middle threaded rod and a lower light rod, the middle threaded rod is provided with external threads on the side wall, the upper light rod and the lower light rod are not provided with threads, and the head, the upper light rod, the middle threaded rod, the lower light rod and the tip are connected in sequence from top to bottom.

[0015] The base plate comprises an inner disc and an outer disc coaxially arranged and connected in a ring shape, the outer side of the inner disc is rotationally matched with the inner side of the outer disc through a connecting bearing, and the outer side of the outer disc is connected with the top end of the cantilever.

[0016] A through mounting hole is formed in the middle of the inner disc, and part of the top surface of the outer disc is in contact with the bottom surface of the level.

[0017] The mounting hole comprises a cylindrical hole and at least two waist-shaped holes, the cylindrical hole is located at the central part of the inner disc, and the waist-shaped holes are arranged around the cylindrical hole.

[0018] The outer side of the inner disc is provided with an inner concave inner bead groove, and the inner side of the outer disc is provided with an inner concave outer bead groove, the connecting bearing comprises a connecting ring and a plurality of balls, the connecting ring comprises a plurality of connecting ring rods and a plurality of bead sleeve rings which are sequentially and spacedly connected, and each bead sleeve ring is sleeved with a ball;

[0019] The middle part of the ball is located in the corresponding bead sleeve ring, the inner end of the ball is slidably connected with the inner bead groove, and the outer end of the ball is slidably connected with the outer bead groove.

[0020] The outer side of the inner disc is provided with an inner concave inner bead groove, and the inner side of the outer disc is provided with an inner concave outer bead groove, the connecting bearing comprises a connecting ring and a plurality of balls, the connecting ring comprises a plurality of connecting ring rods and a plurality of bead sleeve rings which are sequentially and spacedly connected, and each bead sleeve ring is sleeved with a ball;

[0021] The diameter of the locking rod is smaller than the diameter of the hole outer rod, the tail end of the sleeve rod spring is fixedly connected with the hole wall of the locking rod hole, and the head end of the sleeve rod spring is connected with the inner end of the hole outer rod.

[0022] The outer side of the inner disc is provided with an inner concave inner bead groove, and the inner side of the outer disc is provided with an inner concave outer bead groove, the connecting bearing comprises a connecting ring and a plurality of balls, the connecting ring comprises a plurality of connecting ring rods and a plurality of bead sleeve rings which are sequentially and spacedly connected, and each bead sleeve ring is sleeved with a ball;

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. The utility model relates to a bottom support device for load node seismograph applicable to multiple terrains, mainly includes the chassis, leveler and three cantilevers, three cantilevers are set apart from each other, wherein the top surface of the chassis is in contact with the bottom surface of the leveler in part, the middle part of the chassis is provided with the mounting hole that penetrates, the side of the chassis is connected with the top end of the cantilever, the bottom end of the cantilever extends obliquely downward until the inner end of the horizontal taper foot is connected, the middle part of the horizontal taper foot is provided with the fixed screw hole that penetrates, the fixed screw hole is inserted with the fixed screw that is screwed with it correspondingly, when applying, three cantilevers that are set apart from each other can increase the pitch of adjacent horizontal taper feet, so as to facilitate the firmness of the whole support device, at the same time, the screw connection cooperation between the horizontal taper foot and the fixed screw makes the fixed screw directly connected with the ground to be detected, as long as the fixed screw can be inserted into the ground, the fixed connection between the horizontal taper foot and the ground can be realized, and it is not limited to the site with uniform soil, even the soil layer containing a large amount of gravel and bedrock or artificial hardening site can realize fixation, greatly reduce the limitation of application, in addition, the screw connection cooperation between the horizontal taper foot and the fixed screw can also make the horizontal taper foot have a larger vertical height adjustment space, so as to ensure the levelness of the chassis on the terrain with larger slope, thereby ensuring the levelness of the node seismograph connected on the chassis, and it is beneficial to ensure the detection effect. Therefore, the utility model not only has stronger support firmness and can ensure the detection effect, but also has weaker limitation and wider application range.

[0025] 2. The utility model relates to a bottom support device for load node seismograph applicable to multiple terrains, the middle part of the chassis is provided with the mounting hole that penetrates, when applying, the mounting hole is used to realize the connection between the node seismograph and the chassis, preferably the mounting hole includes a cylindrical hole at the middle part of the chassis, and at least two waist type holes are arranged around the cylindrical hole, so as to match the installation of more models of node seismographs, for example: suitable screw rod is connected with the bottom screw hole of the node type seismograph and is tightened first, then the lower part of the screw rod is inserted into the cylindrical hole, and then the lower end of the screw rod is locked with the lock nut, so as to fix the connection between the node type seismograph and the chassis; or when the bottom screw hole of the node type seismograph is not only one and is not located at the middle part, the node seismograph can be fixed through the waist type hole; or the bottom of the node seismograph is fixed through the cylindrical hole and the waist type hole together, so as to adapt to more kinds of node seismographs. Therefore, the utility model has more connection and fixing modes between the seismograph and the seismograph, and can be applicable to various types of node seismographs.

[0026] 3, The utility model discloses a bottom support device for load node seismograph applicable to multiple terrains, preferably the chassis includes the coaxial setting inner disc and its outer ring connected outer disc (preferably the inner disc, outer disc all do degaussing processing), wherein, the outside of inner disc is connected with the inside of outer disc through bearing and rotates, the outside of outer disc is connected with the top of cantilever, the middle part of inner disc is equipped with the mounting hole that penetrates, the part area of the top of outer disc is contacted with the bottom of level, when using, the relative rotation of inner disc and outer disc is carried out through bearing, after the outer disc is fixed through cantilever, fixed screw and the ground to be measured, again through relative rotation, make the rotation of node seismograph connected on inner disc, do 360 ° rotation on the horizontal plane, thereby complete the north orientation of instrument, do not need to adjust cantilever, fixed screw again, it is very efficient. Therefore, the utility model can be compatible with horizontal support and north orientation of instrument, and the efficiency of instrument erection is higher.

[0027] 4, The utility model discloses a bottom support device for load node seismograph applicable to multiple terrains, preferably the outside of inner disc is set with locking tooth ring on the part higher than inner bead groove, the inside of outer disc is equipped with a penetrating locking rod hole on the part higher than outer bead groove, the coaxial sleeve rod spring is arranged in the locking rod hole, the inside of sleeve rod spring is provided with the coaxial locking rod, one end of locking rod is connected with the locking rod head outside locking rod hole, the other end of locking rod is connected with the inner end of hole outer rod, the outer end of hole outer rod is connected with the inner end of locking insert tooth, the outer end of locking insert tooth is engaged with locking tooth ring, the diameter of locking rod is less than the diameter of hole outer rod, the tail end of sleeve rod spring is fixedly connected with the hole wall of locking rod hole, the head end of sleeve rod spring is connected with the inner end of hole outer rod, when needing to rotate inner disc, first, the locking rod head is pulled outward to drive locking rod and sleeve rod spring to pull outward, thereby releasing the engagement between locking insert tooth and locking tooth ring, then, inner disc is rotated to the predetermined angle, and then, the locking rod head is released, so that the locking rod moves inward under the resilience of sleeve rod spring, thereby driving the forward movement of locking insert tooth until locking insert tooth and locking tooth ring are engaged again, realizing the locking of inner disc, which is not only beneficial to the mutual rotation between inner disc and outer disc, but also convenient to realize the north orientation of instrument, and accurate fixation after orientation with high fixation firmness. Therefore, the utility model has better orientation effect on instrument. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0029] Figure 2 It is Figure 1 The structure schematic diagram after removing fixed screw.

[0030] Figure 3 It is Figure 1The structural schematic diagram of the cantilever.

[0031] Figure 4 The internal structure schematic diagram of the chassis in the utility model.

[0032] Figure 5 The relative position schematic diagram of the locking rod and the sleeve rod spring in the utility model.

[0033] Figure 6 The structural schematic diagram of the outer disc in the utility model.

[0034] Figure 7 The structural schematic diagram of the inner disc in the utility model.

[0035] Figure 8 The connecting structure schematic diagram of the inner disc and the connecting bearing in the utility model.

[0036] Figure 9 The top view of the level in the utility model.

[0037] In the drawing: level 1, chassis 2, cantilever 3, vertical part 31, inclined part 32, inclined included angle 33, mounting hole 4, cylindrical hole 41, waist hole 42, inner disc 5, inner bead groove 51, outer annular surface 52, outer disc 6, outer bead groove 61, connecting bearing 7, connecting ring 71, ball 72, connecting ring rod 73, sleeve bead ring 74, locking rod 8, locking tooth ring 81, locking rod hole 82, sleeve rod spring 83, hole outer rod 84, locking insert gear 85, locking rod head 86, horizontal taper foot 9, fixed screw hole 91, fixed screw rod 92, rod head 93, rod body 94, upper light rod 941, middle threaded rod 942, lower light rod 943, rod tip 95, fixed nut 10. DETAILED DESCRIPTION

[0038] The utility model is further explained in detail in combination with the drawings and specific embodiments.

[0039] Referring to Figure 1 — Figure 9 A bottom support device suitable for multiple terrains for a load node seismograph, the bottom support device comprises a chassis 2, a level 1 and three cantilevers 3.

[0040] Part of the top surface of the chassis 2 is in contact with the bottom surface of the level 1, and the middle part of the chassis 2 is provided with a penetrating mounting hole 4.

[0041] The side part of the chassis 2 is connected with the top end of the cantilever 3, the bottom end of the cantilever 3 extends downwardly and obliquely until being connected with the inner end of the horizontal taper foot 9, the middle part of the horizontal taper foot 9 is provided with a penetrating fixed screw hole 91, a fixed screw rod 92 which is threadedly matched with the fixed screw hole 91 is correspondingly inserted into the fixed screw hole 91, and the three cantilevers 3 are arranged separately from each other.

[0042] The cantilever 3 comprises a vertical part 31 and an inclined part 32, the inner side of the vertical part 31 is connected with the side of the chassis 2, the bottom end of the vertical part 31 is connected with the top end of the inclined part 32, and the bottom end of the inclined part 32 is connected with the inner end of the horizontal cone foot 9.

[0043] The inclined part 32 forms an inclined angle 33 with the gravity line, and the size of the inclined angle 33 is twenty degrees to sixty degrees.

[0044] The fixed screw rod 92 comprises a rod head 93, a rod body 94 and a rod tip 95 connected in sequence from top to bottom, and the side of the rod body 94 is provided with external threads.

[0045] The rod body 94 comprises a polishing rod 941, a middle threaded rod 942 and a lower polishing rod 943, the side of the middle threaded rod 942 is provided with external threads, the polishing rod 941 and the lower polishing rod 943 are not provided with threads, and the rod head 93, the polishing rod 941, the middle threaded rod 942, the lower polishing rod 943 and the rod tip 95 are connected in sequence from top to bottom.

[0046] The chassis 2 comprises an inner disc 5 and an outer disc 6 coaxially arranged and connected in a ring shape, the outer side of the inner disc 5 is rotationally connected with the inner side of the outer disc 6 through a connecting bearing 7, and the outer side of the outer disc 6 is connected with the top end of the cantilever 3.

[0047] The middle part of the inner disc 5 is provided with a penetrating mounting hole 4, and part of the top surface of the outer disc 6 is in contact with the bottom surface of the level 1.

[0048] The mounting hole 4 comprises a cylindrical hole 41 and at least two waist-shaped holes 42, the cylindrical hole 41 is located at the central part of the inner disc 5, and the waist-shaped holes 42 are arranged around the cylindrical hole 41.

[0049] The outer side of the inner disc 5 is provided with an inner concave inner bead groove 51, the inner side of the outer disc 6 is provided with an inner concave outer bead groove 61, the connecting bearing 7 comprises a connecting ring 71 and a plurality of rolling balls 72, the connecting ring 71 comprises a plurality of connecting ring rods 73 and a plurality of bead sleeve rings 74 connected in sequence, and each bead sleeve ring 74 is sleeved with a rolling ball 72.

[0050] The middle part of the rolling ball 72 is located in the corresponding bead sleeve ring 74, the inner end of the rolling ball 72 is slidably connected with the inner bead groove 51, and the outer end of the rolling ball 72 is slidably connected with the outer bead groove 61.

[0051] The outer side of the inner disc 5 is provided with a locking tooth ring 81 around the part higher than the inner bead groove 51, the inner side of the outer disc 6 is provided with a through locking rod hole 82 around the part higher than the outer bead groove 61, the locking rod hole 82 is provided with a coaxial sleeve rod spring 83, the inside of the sleeve rod spring 83 is provided with a coaxial locking rod 8, one end of the locking rod 8 is connected with a locking rod head 86 outside the locking rod hole 82, the other end of the locking rod 8 is connected with the inner end of a hole outer rod 84, the outer end of the hole outer rod 84 is connected with the inner end of a locking insert tooth 85, the outer end of the locking insert tooth 85 is engaged with the locking tooth ring 81.

[0052] The diameter of the locking rod 8 is smaller than the diameter of the hole outer rod 84, the tail end of the sleeve rod spring 83 is fixedly connected with the hole wall of the locking rod hole 82, and the head end of the sleeve rod spring 83 is connected with the inner end of the hole outer rod 84.

[0053] The top surface of the inner disc 5 is annularly connected with an outer ring surface 52, and the outer ring surface 52 is arranged above the locking tooth ring 81 and the connecting ring 71.

[0054] The supplementary technical features of the utility model are as follows:

[0055] The cantilever 3 in the utility model is preferably made of metal with large mechanical strength, such as stainless steel.

[0056] The inclination angle 33 in the utility model is preferably 30 degrees.

[0057] The level 1 in the utility model is preferably a circular level, and a structural diagram thereof is shown in Figure 9 .

[0058] Embodiment 1:

[0059] Referring to Figure 1 — Figure 9 A bottom support device suitable for multiple terrains for a load node seismograph, the bottom support device comprises a bottom disc 2, a level 1 and three cantilevers 3; the top surface of the bottom disc 2 is in contact with the bottom surface of the level 1, and a through mounting hole 4 is formed in the middle part of the bottom disc 2; the side part of the bottom disc 2 is connected with the top end of the cantilever 3, the bottom end of the cantilever 3 extends downwardly and obliquely until being connected with the inner end of a horizontal taper foot 9, a through fixing screw hole 91 is formed in the middle part of the horizontal taper foot 9, a fixing screw 92 is inserted into the fixing screw hole 91 in a threaded manner, and the three cantilevers 3 are arranged apart from each other. The cantilever 3 comprises a vertical part 31 and an inclined part 32, the inner side surface of the vertical part 31 is connected with the side part of the bottom disc 2, the bottom end of the vertical part 31 is connected with the top end of the inclined part 32, and the bottom end of the inclined part 32 is connected with the inner end of the horizontal taper foot 9.

[0060] In use, first, the installation positions of the three horizontal cone feet 9 are predetermined, the horizontal cone feet 9 are in a horizontal state during installation, then the fixed screw rod 92 is inserted into the fixed threaded hole 91 in the corresponding horizontal cone foot 9 and connected with the ground at the installation position, the connection between the fixed screw rod 92 and the ground is determined according to the depth of the fixed screw rod 92 inserted into the ground, thus, no matter what kind of ground, even if the soil layer containing a large amount of gravel and bedrock or artificial hardening site can be inserted and fixed, in addition, the installation height of the horizontal cone foot 9 is mainly determined by the relative screw rotation of the fixed screw rod 92 and the fixed threaded hole 91, when the preset height is reached, the screw rotation is stopped, and the fixed height is fixed by the threaded connection between the fixed screw rod 92 and the fixed threaded hole 91 (after stopping the screw rotation, the fixed nut 10 below the horizontal cone foot 9 can be unscrewed to enhance the connection firmness between the fixed screw rod 92 and the horizontal cone foot 9), thus, the terrain with a larger slope can be adapted to, the levelness of the chassis 2 is ensured, and thus the levelness of the node seismograph connected on the chassis 2 is ensured. In addition, the levelness of the chassis 2 needs to be judged and confirmed by the level 1.

[0061] As for the connection operation (achieved through the installation hole 4) between the chassis 2 and the node seismograph, it can be performed after the fixed connection between the three horizontal cone feet 9 and the ground, or it can be performed in advance before the fixed operation between the horizontal cone feet 9 and the ground.

[0062] Embodiment 2:

[0063] The basic content is the same as that in Embodiment 1, and the difference lies in that:

[0064] The fixed screw rod 92 comprises a rod head 93, a rod body 94 and a rod tip 95 connected in sequence from top to bottom, and the side wall of the rod body 94 is provided with external threads. In use, if the ground hardness is large, the rod tip 95 is inserted into the ground by knocking the rod head 93.

[0065] It is further preferred that the rod body 94 comprises an upper light rod 941, a middle threaded rod 942 and a lower light rod 943, the side wall of the middle threaded rod 942 is provided with external threads, the upper light rod 941 and the lower light rod 943 are not provided with threads, and the rod head 93, the upper light rod 941, the middle threaded rod 942, the lower light rod 943 and the rod tip 95 are connected in sequence from top to bottom, wherein the design of the lower light rod 943 is conducive to the smoother insertion of the rod head 93 into the ground.

[0066] Embodiment 3:

[0067] The basic content is the same as that in Embodiment 1, and the difference lies in that:

[0068] The bottom plate 2 comprises an inner plate 5 and an outer plate 6 coaxially arranged; the outer side of the inner plate 5 is connected with the inner side of the outer plate 6 through a connecting bearing 7, and the outer side of the outer plate 6 is connected with the top end of the cantilever 3; the middle part of the inner plate 5 is provided with a penetrating installation hole 4, and part of the top surface of the outer plate 6 is in contact with the bottom surface of the level 1. The outer side of the inner plate 5 is provided with an inner concave inner bead groove 51, and the inner side of the outer plate 6 is provided with an inner concave outer bead groove 61; the connecting bearing 7 comprises a connecting ring 71 and a plurality of rolling balls 72; the connecting ring 71 comprises a plurality of sequentially spaced connecting ring rods 73 and a ball sleeve ring 74, and one rolling ball 72 is sleeved in each ball sleeve ring 74; the middle part of the rolling ball 72 is located in the corresponding ball sleeve ring 74, the inner end of the rolling ball 72 is slidably connected with the inner bead groove 51, and the outer end of the rolling ball 72 is slidably connected with the outer bead groove 61.

[0069] In application, after the outer plate 6 is fixed in the horizontal position by the cantilever 3, the inner plate 5 is also in the horizontal position; at this time, only the inner plate 5 needs to be rotated to change the orientation of the node seismograph connected thereto, so as to realize 360-degree rotation and achieve the required detection angle, such as the north orientation of the instrument.

[0070] Embodiment 4:

[0071] The basic content is the same as that of embodiment 3, and the difference is that:

[0072] The outer side of the inner plate 5 is provided with a locking tooth ring 81 around the part higher than the inner bead groove 51, the inner side of the outer plate 6 is provided with a penetrating locking rod hole 82 around the part higher than the outer bead groove 61, the locking rod hole 82 is provided with a coaxial sleeve rod spring 83, the inside of the sleeve rod spring 83 is provided with a coaxial locking rod 8, one end of the locking rod 8 is connected with a locking rod head 86 located outside the locking rod hole 82, the other end of the locking rod 8 is connected with the inner end of a hole outer rod 84, the outer end of the hole outer rod 84 is connected with the inner end of a locking insert tooth 85, and the outer end of the locking insert tooth 85 is engaged with the locking tooth ring 81; the diameter of the locking rod 8 is smaller than the diameter of the hole outer rod 84, the tail end of the sleeve rod spring 83 is fixedly connected with the hole wall of the locking rod hole 82, and the head end of the sleeve rod spring 83 is connected with the inner end of the hole outer rod 84.

[0073] When the orientation of the node seismograph connected to the inner disc 5 needs to be changed, the locking rod head 86 is first pulled outward to pull the sleeve rod spring 83, the locking rod 8, the hole outer rod 84 and the locking insert tooth 85 outward, thereby releasing the engagement between the locking insert tooth 85 and the locking tooth ring 81, and then the inner disc 5 is rotated to relatively rotate the inner disc 5 and the outer disc 6 through the connecting bearing 7, so as to drive the node seismograph connected to the inner disc 5 to rotate, until the node seismograph reaches the required orientation, and then the locking rod head 86 is loosened, so that the locking rod 8 is driven to reset under the elastic force of the sleeve rod spring 83, to drive the hole outer rod 84 and the locking insert tooth 85 to reset, thereby achieving the engagement between the locking insert tooth 85 and the locking tooth ring 81, and then the inner disc 5 is fixed, that is, the required orientation of the node seismograph is fixed.

[0074] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any equivalent modification or change made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A bottom support device for a load node seismometer suitable for multi-terrain, characterized by: The bottom support device comprises a base plate (2), a level (1) and three cantilevers (3); Part of the top surface of the base plate (2) is in contact with the bottom surface of the level (1), and a through mounting hole (4) is formed in the middle of the base plate (2); The side of the base plate (2) is connected with the top end of the cantilever (3), the bottom end of the cantilever (3) extends downward obliquely until being connected with the inner end of the horizontal taper foot (9), a through fixing threaded hole (91) is formed in the middle of the horizontal taper foot (9), a fixing screw (92) is inserted into the fixing threaded hole (91) in a threaded manner, and the three cantilevers (3) are arranged separately.

2. A bottom support device for a load node seismometer suitable for various terrains according to claim 1, characterized in that: The cantilever (3) comprises a vertical part (31) and an inclined part (32), the inner side of the vertical part (31) is connected with the side of the base plate (2), the bottom end of the vertical part (31) is connected with the top end of the inclined part (32), and the bottom end of the inclined part (32) is connected with the inner end of the horizontal taper foot (9).

3. A bottom support device for a load node seismometer suitable for various terrains according to claim 2, characterized in that: The inclined part (32) forms an inclined angle (33) with the gravity line, and the size of the inclined angle (33) is twenty to sixty degrees.

4. A bottom support device for a load node seismometer suitable for various terrains according to claim 1, 2 or 3, characterized in that: The fixing screw (92) comprises a head (93), a shaft (94) and a tip (95) connected in sequence from top to bottom, and the side of the shaft (94) is provided with external threads.

5. A bottom support device for a load node seismometer suitable for various terrains according to claim 4, characterized in that: The shaft (94) comprises an upper light rod (941), a middle threaded rod (942) and a lower light rod (943), the side of the middle threaded rod (942) is provided with external threads, and the upper light rod (941) and the lower light rod (943) are not provided with threads, and the head (93), the upper light rod (941), the middle threaded rod (942), the lower light rod (943) and the tip (95) are connected in sequence from top to bottom.

6. A bottom support device for a load node seismometer suitable for various terrains according to claim 1, 2 or 3, characterized in that: The base plate (2) comprises an inner disc (5) and an outer disc (6) arranged coaxially, the outer side of the inner disc (5) is rotatably connected with the inner side of the outer disc (6) through a connecting bearing (7), and the outer side of the outer disc (6) is connected with the top end of the cantilever (3). A through mounting hole (4) is formed in the middle of the inner disc (5), and part of the top surface of the outer disc (6) is in contact with the bottom surface of the level (1).

7. A bottom support device for a load node seismometer suitable for multiple terrains according to claim 6, characterized in that: The mounting hole (4) comprises a cylindrical hole (41) and at least two waist-shaped holes (42), the cylindrical hole (41) is located at the central part of the inner disc (5), and the waist-shaped holes (42) are arranged around the cylindrical hole (41).

8. A bottom support device for a load node seismometer suitable for various terrains according to claim 6, characterized in that: An inner concave inner bead groove (51) is formed in the outer side of the inner disc (5), an outer concave outer bead groove (61) is formed in the inner side of the outer disc (6), the connecting bearing (7) comprises a connecting ring (71) and a plurality of balls (72), the connecting ring (71) comprises a plurality of link rods (73) and a plurality of bead sleeve rings (74) connected in sequence, and one ball (72) is sleeved in each bead sleeve ring (74). The middle part of the ball (72) is located in the corresponding bead sleeve ring (74), the inner end of the ball (72) is slidably connected with the inner bead groove (51), and the outer end of the ball (72) is slidably connected with the outer bead groove (61).

9. A bottom support device for a load node seismometer suitable for multiple terrains according to claim 8, wherein: The outer side of the inner disc (5) is provided with a locking tooth ring (81) around the part higher than the inner bead groove (51), the inner side of the outer disc (6) is provided with a through locking rod hole (82) around the part higher than the outer bead groove (61), the locking rod hole (82) is provided with a coaxial sleeve rod spring (83), the inside of the sleeve rod spring (83) is provided with a coaxial locking rod (8), one end of the locking rod (8) is connected with a locking rod head (86) outside the locking rod hole (82), the other end of the locking rod (8) is connected with the inner end of a hole outer rod (84), the outer end of the hole outer rod (84) is connected with the inner end of a locking insert gear (85), the outer end of the locking insert gear (85) is engaged with the locking tooth ring (81); The diameter of the locking rod (8) is smaller than the diameter of the hole outer rod (84), the tail end of the sleeve rod spring (83) is fixedly connected with the hole wall of the locking rod hole (82), and the head end of the sleeve rod spring (83) is connected with the inner end of the hole outer rod (84).

10. A bottom support device for a load node seismometer suitable for various terrains according to claim 9, characterized in that: The top surface of the inner disc (5) is annularly connected with an outer ring surface (52), the outer ring surface (52) is arranged above the locking tooth ring (81) and the connecting ring (71).

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