CN209855733U - Core ejection device - Google Patents

Abstract

The utility model relates to a core equipment technical field is got in oil geology probing, concretely relates to rock core ejecting device. The device comprises a joint fixedly arranged at one end of a core barrel during use, a lead screw penetrates through threads in the joint, one end, extending forwards and backwards, of the lead screw and pushing a core is defined as the front end, the core ejecting device comprises a driving mechanism, the core ejecting device further comprises a supporting component, and the supporting component is a movable supporting component capable of moving forwards along with the driving mechanism and the lead screw. The lead screw front end supports in the position department with the same altitude of a core section of thick bamboo through connecting, and the support of lead screw rear end is realized through bearing actuating mechanism to the activity supporting part for the lead screw is whole to be in or to be close to the horizontality, and during ejecting rock core, actuating mechanism drives the lead screw and rotates, and the lead screw makes the whole antedisplacement of lead screw with the cooperation of connecting, drives the activity supporting part and moves forward, and rock core ejecting device's overall structure is comparatively simple, and it is more convenient to operate, has reduced working strength, has made things convenient for taking out of rock core.

Description

Core ejection device

Technical Field

The utility model relates to a core equipment technical field is got in oil geology probing, concretely relates to rock core ejecting device.

Background

During geological exploration, after a core is obtained through a coring tool, the core needs to be taken out of a core barrel of the coring tool for subsequent tests, the core is vertically poured out of the core barrel in the traditional method, but the traditional method has many defects, such as easy personal injury of ground personnel; the rock core is broken when being stressed too much; unclean toppling leaves the core in the core barrel, etc.

To the above situation, chinese utility model patent document with the grant publication number CN203114217U discloses a well drilling coring device, and this coring device twists the joint in coring section of thick bamboo one end soon including when using, and the screw is worn to be equipped with the lead screw in the joint, can be ejecting with the rock core in the coring section of thick bamboo when the lead screw rotates, is equipped with the hand wheel that supplies operating personnel to pull to twist in the one end of lead screw, installs at least one extension bar on the other end of lead screw detachably. When the core ejecting device is used, after the core is ejected for a certain distance, the screw rod and the extension rod need to be taken out of the core taking barrel, the extension rod is additionally added, then the core taking barrel is put into the core taking barrel again, and the ejecting action is repeated until the core is ejected completely.

It can be seen that when the core length is great, the existing coring device needs to take out the lead screw for many times, increase the lengthening bar and put in again, increase labor intensity to a certain extent, and is inconvenient to operate. If increase the length back of lead screw in order to reduce the number of times of repeated additional installation extension bar, lead to the lead screw whole to receive self action of gravity and buckle easily, lead to taking place the eccentric wear between lead screw and the joint, reduced the life of lead screw and joint, moreover, the whole back operating personnel that bends of lead screw is inconvenient when rotating the lead screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rock core ejecting device for solve the inconvenient technical problem of coring operation when rock core length is great among the prior art.

In order to achieve the above object, the utility model discloses rock core ejecting device adopts following technical scheme:

the core ejecting device comprises a joint which is fixedly arranged at one end of a core barrel during use, a lead screw which is in running fit with the joint to eject the core from the other end of the core barrel is arranged in the joint in a threaded manner, the lead screw is defined to extend forwards and backwards, one end of the core which pushes the core is taken as the front end, the core ejecting device comprises a driving mechanism which is in transmission connection with the rear end of the lead screw to drive the lead screw to rotate, the core ejecting device further comprises a supporting component which is fixedly connected with the driving mechanism and bears the driving mechanism upwards, and the supporting component is a movable supporting component which can move forwards along with the driving mechanism and the lead screw.

The beneficial effects of the above technical scheme are: the lead screw front end supports in the position department with the same altitude of a core section of thick bamboo through connecting, movable supporting component passes through bearing actuating mechanism and realizes the support to the lead screw rear end, avoid the lead screw rear end to take place the beat and increase the eccentric wear between lead screw and the joint under the dead weight effect, make the lead screw wholly be in or be close to the horizontality, during ejecting rock core, actuating mechanism drives the lead screw and rotates, the lead screw makes the whole antedisplacement of lead screw with the cooperation of joint, it moves forward to drive movable supporting component, rock core ejecting device's overall structure is comparatively simple, and it is more convenient to operate, and the working strength is reduced, the taking out of rock core has been.

Further, the core ejecting device comprises a guide structure for guiding the front and back movement of the movable supporting component. The guide structure enables the forward and backward movement track of the screw rod to be more accurate.

Further, the guide structure comprises a support seat for upwards supporting the movable support part, the support seat comprises a base portion and a guide rail portion, the guide rail portion comprises at least two guide rails which extend forwards and backwards in parallel, and the movable support part comprises a plurality of support rods which are arranged on the corresponding guide rails in a guiding mode. The at least two guide rails and the plurality of support rods matched with the guide rails are adopted, so that the forward and backward movement stability of the movable support part is ensured, and the support stability of the driving mechanism can also be ensured by the plurality of support rods.

Furthermore, the guide rail parts are arranged above the base part at intervals through support columns, connecting rings are movably sleeved on the guide rails in the front-back direction respectively, and the support rods are fixedly arranged on the corresponding connecting rings. The guide rail and the support rod are connected through the connecting ring and guided in a back-and-forth moving mode, the structure is simpler, and the arrangement is convenient.

Further, the joint is a screw cap screwed outside the corresponding end of the core barrel, the screw cap is provided with an internal thread section connected with the core barrel through threads, and the lead screw is arranged on the cap bottom of the screw cap in a penetrating manner. The screw cap has an internal thread section, the internal thread section is matched with the corresponding end of the core barrel from a male thread in the core barrel, the screw cap can be installed on the core barrel, a locking structure is not required to be additionally arranged, the core ejecting device is simpler, and the connection reliability of the connector and the core barrel is ensured.

Further, the front end of the screw rod is provided with a jacking seat, the front side of the jacking seat is a jacking side used for being matched with the core jacking, and the radial size of the jacking side is larger than that of the front end of the screw rod. The jacking seat enlarges the contact area between the core jacking device and the core, facilitates the complete jacking of the core, and avoids the situation that the core is broken by jacking due to overlarge pressure caused by small contact area.

Furthermore, the jacking seat is assembled at the front end of the screw rod through a bearing, an inner ring of the bearing is fixedly connected with the front end of the screw rod, and an outer ring of the bearing is fixedly connected with the jacking seat, so that the jacking seat and the screw rod can relatively rotate in the circumferential direction and are relatively and fixedly assembled together in the front-rear direction. When the lead screw rotates, the jacking seat cannot rotate along with the lead screw, but can move forwards along with the lead screw to push the rock core, so that the phenomenon that the jacking seat rotates relative to the inner wall of the core barrel to increase the advancing resistance of the jacking seat is avoided, and the phenomenon that the core barrel is driven by the lead screw to rotate synchronously is also avoided.

Further, the core ejecting device also comprises a cylindrical rubber plug arranged at the ejecting side of the ejecting seat during use. Thereby the cylindricality rubber buffer can avoid the roof pressure seat direct with the rock core contact cause the damage to the rock core.

Further, the core ejecting device further comprises a core barrel support used for upwards supporting the core barrel, and the core barrel support is provided with a U-shaped supporting surface used for being matched with the periphery of the core barrel. The U-shaped supporting surface can better support the core barrel, and the core barrel is prevented from moving horizontally along the radial direction.

Drawings

Fig. 1 is a schematic structural view of the rock core ejecting device of the utility model;

fig. 2 is a schematic view of the core ejecting device and the coring barrel of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a front view of the core barrel support of FIG. 2;

FIG. 5 is a top view of the core barrel support of FIG. 2;

description of reference numerals: 1-cylindrical rubber plug, 2-top pressure seat, 3-thrust bearing, 4-lead screw, 5-threaded screw cap, 6-driving motor, 7-guide rail, 8-support rod, 9-connecting ring, 10-support column, 11-core barrel support, 111-U-shaped support surface, 12-core barrel, 13-core and 14-base part.

Detailed Description

The following further describes the embodiments of the present invention with reference to the attached drawings:

the utility model discloses rock core ejecting device's embodiment:

as shown in fig. 1 and 2, the core ejecting device includes a screw cap 5 fixedly mounted on the core barrel during use, a lead screw 4 penetrates through the screw cap 5, a driving mechanism capable of driving the lead screw 4 to rotate is connected to the rear end of the lead screw 4 so that the lead screw 4 moves forward to eject the core 13, a support seat is arranged below the driving mechanism, and the driving mechanism is assembled on the support seat through a movable support component in a guiding and moving manner along the front-back direction. When coring is carried out, the screw rod 4 drives the driving mechanism and the movable supporting component to move towards the front side together under the driving of the driving mechanism, and the rock core 13 is ejected out of the core barrel 12.

Specifically, as shown in fig. 1 and 2, a screw cap 5 is sleeved outside the front end of the screw rod 4, the screw cap 5 is in threaded fit with the screw rod 4, and when the screw rod 4 rotates, the screw rod can move back and forth by being matched with the screw cap 5 so as to eject a core and enable the core to be pulled out of a core barrel. Specifically, the screw cap 5 has a cap-like structure as a whole, and an internal thread section is provided at the front end, as shown in fig. 2, and when in use, the internal thread section is threadedly engaged with the male end of the core barrel 12, so that the screw cap 5 is fixedly mounted on the core barrel 12. The screw rod 4 passes through the bottom of the screw cap 5. In this embodiment, the screw cap 5 forms a joint that can be fixedly connected to the core barrel.

The top pressing seat 2 is arranged at the front end of the screw rod 4, and when the core pushing device is used, the top pressing seat 2 is pushed by the screw rod 4 to move forwards, so that the front side of the top pressing seat 2 forms a pushing side for pushing the core to move. As can be seen from fig. 1 and 2, the radial dimension of the pushing side of the pushing seat 2 is larger than that of the screw rod 4, so as to enlarge the effective contact area with the core.

The middle part of top pressure seat 2 is provided with along the perforation that the axial runs through, and footstep bearing 3 sets up between top pressure seat 2 and lead screw 4, can better bear the axial force through footstep bearing 3 to the jacking force when rotating lead screw 4 transmits rock core 13, and is concrete, footstep bearing 3's inner circle and lead screw 4 fixed connection, footstep bearing 3's outer lane and top pressure seat 2 fixed connection. In this embodiment, because the lengths of the core 13 and the core barrel 12 are long, the weight of the core 13 and the core barrel 12 is large, and the core 13 and the core barrel 12 cannot be driven by the screw rod 4 to rotate, and certainly, in the actual use process, for the sake of safety, in other embodiments, a clamping structure may be provided to clamp the core barrel 12, so as to further ensure the stability of the core barrel 12 in the core jacking process.

As shown in fig. 1 and 2, the core ejecting apparatus further includes a driving motor 6 serving as a driving device to provide a driving force to the lead screw 4, an output shaft of the driving motor 6 is in transmission connection with a rear end of the lead screw 4, and specifically, the rear end of the lead screw 4 is connected with the output shaft of the driving motor through a coupling. The driving motor 6 comprises a high-speed switch key and a low-speed switch key, so that the rotating speed of the output shaft of the driving motor 6 can be controlled according to the resistance in the core barrel 12 to adjust the rotating speed of the lead screw 4.

As shown in fig. 2 and 3, a support seat is disposed below the driving motor 6, and the support seat in this embodiment includes a base portion 14, two guide rails 7 extending in the front-back direction are disposed on the base portion 14 at intervals through a support column 10, a connection ring 9 is inserted through the guide rails 7, and the connection ring 9 can be guided and moved back and forth on the guide rails 7. The number of the connection rings 9 in this embodiment is four, and each of the guide rails 7 is provided with two front and rear portions. And the support rods 8 are respectively fixed on the connecting rings 9, and are fixed in a welding mode. The upper end of the supporting rod 8 supports the driving motor 6, therefore, when the driving motor 6 drives the screw rod 4 to rotate, the screw rod 4 is driven through the matching of the screw rod 4 and the threaded screw cover 5, the driving motor 6 moves forwards, the supporting rod 8 can also follow up, the effective support for the driving motor 6 and the rear end of the screw rod 4 is guaranteed, the connecting ring 9 and the guide rail 7 can guide the back and forth movement of the driving motor 6, and the driving motor 6 moves on the set track. Wherein the plurality of support rods 8 form a support member and the support base and the coupling ring constitute a guide structure for guiding the movement of the support member.

The utility model discloses rock core ejecting device is still including the core barrel support 11 that supports core barrel 12, and core barrel support 11 has guaranteed that core barrel 12 can be at same height with lead screw 4, has guaranteed that whole rock core 13 ejecting process is more smooth. Specifically, the number of the core barrel supports 11 is at least two, and as shown in fig. 4 and 5, the core barrel supports 11 have a U-shaped supporting surface 111 in the middle, the U-shaped supporting surface 111 is adapted to the outer peripheral shape of the core barrel 12, and the core barrel supports 11 support the core barrel 12 through the U-shaped supporting surface 111.

The utility model discloses rock core ejecting device during operation, as shown in figure 2, use core barrel support 11 to support core barrel 12, with screw thread spiral cover 5 by 4 front end suit on lead screw 4, and at the front end installation jacking seat 2 of lead screw 4, install screw thread spiral cover 5 on core barrel 12, of course, in order to reduce the wearing and tearing to rock core 13, before putting into core barrel 12 with lead screw 4 and jacking seat 2, the cylindricality rubber buffer 1 is gone into in core barrel 12 to the stopper, pass through the coupling joint with the rear end of lead screw 4 and driving motor 6's output shaft, lead screw 4 passes through driving motor 6 bearing on a plurality of bracing pieces 8. The driving motor 6 is started, the screw rod 4 drives the driving motor 6 and the support rods 8 to move from back to front along the guide rail 7 through the meshing with the threaded cap 5 while rotating, the jacking force of the screw rod 4 is transmitted to the rock core 13 through the thrust bearing 3, the jacking seat 2 and the cylindrical rubber plug 1, and the rock core 13 is ejected out of the rock core barrel 12. After pushing is completed, the driving motor 6 rotates reversely to gradually screw the lead screw 4 out of the core barrel 12, and then the screw cap 5 is removed. Or after pushing is finished, the threaded screw cap 5 is detached, and the core barrel 12 and the driving motor 6 are directly moved back and forth.

In this embodiment, the core ejecting device further comprises a core barrel support for supporting the core barrel, so that the stability of the core barrel in the core ejecting process can be ensured. In other embodiments, the core barrel holder may not be provided, but the core barrel needs to be ensured to be located at a higher position when the core is pushed, for example, a step surface formed naturally is utilized.

In this embodiment, core ejecting device still installs the cylindricality rubber buffer in top pressure seat front end when using. Thus, the damage to the rock core caused by the direct contact of the jacking seat and the rock core can be avoided. In other embodiments, a cylindrical rubber stopper may not be provided.

In this embodiment, the roof pressure seat embeds there is the bearing to the better jacking force when rotating the lead screw transmits to the rock core, and the bearing specifically pushes away the bearing, the axial force that can be better bore. In other embodiments, the bearing may also be a spherical plain bearing. In other embodiments, the front end of the screw rod is directly and fixedly connected with the top pressure seat without the bearing.

In this embodiment, the front end of the screw rod is rotatably provided with a jacking seat. The jacking seat enlarges the contact area of the front end of the screw rod and the rock core, and facilitates the complete ejection of the rock core. In other embodiments, the jacking seat is not arranged, and the lead screw is directly contacted with the core.

In this embodiment, the coupling is a threaded cap threadably mounted on the corresponding end of the core barrel. In other embodiments, the joint may also be fixedly connected to the corresponding end of the core barrel by a jackscrew device, specifically, the joint still adopts a cap-shaped structure, a threaded hole penetrating through the sidewall of the cap-shaped structure is provided along the radial direction, and a bolt assembled in the threaded hole can be tightened to fix the joint to the corresponding end of the core barrel.

In this embodiment, the guide rail portion is disposed on the base portion at intervals through the support posts, the connection ring is sleeved in the guide rail, and the support rod is fixedly disposed on the connection ring. In other embodiments, the support column may not be provided, the guide rail portion is directly disposed on the base portion, the guide rail may not be provided with the connection ring, but is provided with the guide slider, the upper side of the guide slider is provided with a clamping groove for clamping the support rod, and the guide slider is clamped with the support rod through the clamping groove to fix the support rod on the guide rail.

In the present embodiment, the number of guide rails is two arranged in parallel. In other embodiments, the number of the guide rails may also be three, four or a suitable number may be selected according to actual needs.

In this embodiment, the core ejecting device comprises a guide structure for guiding the back-and-forth movement of the support component, and the guide structure enables the back-and-forth movement track of the screw rod to be more accurate. In other embodiments, instead of providing the guide structure, a roller may be provided at a lower portion of the support member, and the roller may be used to move the support member forward and backward.

In this embodiment, the driving device is a driving motor, in other embodiments, the driving device may also be a crank connecting rod structure, specifically, a piston rod of the power cylinder is connected to one end of the crank connecting structure, the other end of the crank connecting rod structure is in transmission connection with the rear end of the lead screw, and the linear motion of the piston rod of the power cylinder in the extending and contracting direction is changed into rotation through the crank connecting rod structure so as to be in transmission fit with the lead screw.

In this embodiment, the screw thread spiral cover links to each other through the public end screw thread of internal thread with a core barrel, in other embodiments, when needs connect the screw thread spiral cover on the female of a core barrel, also can change the screw thread spiral cover, sets up the external screw thread on the screw thread spiral cover to cooperate with the female end screw thread on the core barrel.

Claims (9)

1. Rock core ejecting device sets firmly the joint in core barrel one end when using, and the screw wear be equipped with can with connect the ejecting lead screw of other end of normal running fit with the rock core by the core barrel in the joint, its characterized in that: the rock core ejecting device comprises a driving mechanism which is in transmission connection with the rear end of the screw rod so as to drive the screw rod to rotate, and a supporting component which is fixedly connected with the driving mechanism and bears the driving mechanism upwards and is a movable supporting component which can move forwards along with the driving mechanism and the screw rod.

2. The core ejection device as claimed in claim 1, wherein: the core ejecting device comprises a guide structure for guiding the front and back movement of the movable supporting component.

3. The core ejection device as claimed in claim 2, wherein: the guide structure comprises a supporting seat for upwards supporting the movable supporting part, the supporting seat comprises a base part and a guide rail part, the guide rail part comprises at least two guide rails which extend forwards and backwards in parallel, and the movable supporting part comprises a plurality of supporting rods which are arranged on the corresponding guide rails in a guiding mode.

4. The core ejection device as claimed in claim 3, wherein: the guide rail parts are arranged above the base part at intervals through support columns, connecting rings are movably sleeved on the guide rails in the front-back direction, and the support rods are fixedly arranged on the corresponding connecting rings.

5. The core ejection device as claimed in any one of claims 1 to 4, wherein: the joint is a thread screw cap which is screwed outside the corresponding end of the core barrel through threads, the thread screw cap is provided with an internal thread section which is connected with the threads of the core barrel, and the lead screw is arranged on the cap bottom of the thread screw cap in a penetrating way.

6. The core ejection device as claimed in any one of claims 1 to 4, wherein: the front end of the screw rod is provided with a jacking seat, the front side of the jacking seat is a jacking side matched with the core jacking, and the radial size of the jacking side is larger than that of the front end of the screw rod.

7. The core ejection device as claimed in claim 6, wherein: the jacking seat is assembled at the front end of the screw rod through a bearing, an inner ring of the bearing is fixedly connected with the front end of the screw rod, and an outer ring of the bearing is fixedly connected with the jacking seat, so that the jacking seat and the screw rod can relatively rotate in the circumferential direction and are relatively and fixedly assembled together in the front-rear direction.

8. The core ejection device as claimed in claim 6, wherein: the core ejecting device also comprises a cylindrical rubber plug arranged at the ejecting side of the ejecting seat during use.

9. The core ejection device as claimed in any one of claims 1 to 4, wherein: the core ejecting device further comprises a core barrel support used for upwards supporting the core barrel, and the core barrel support is provided with a U-shaped supporting surface used for being matched with the periphery of the core barrel.