FI13146Y1 - Drill rig and drill rig roof construction - Google Patents

Abstract

A drill carriage (100), comprising a chassis (102), a frame (104) resting on said chassis (102), a floor (106) arranged on said frame (104) and walls (108) resting on said floor (106), roof structure (10) and an upright drilling unit (110) passing through the base (102), the frame (104) and the floor (106), the roof structure (10) comprising a frame-shaped roof frame (12) arranged to be attached to said walls (108) , which roof frame (12) is a circuit (16) formed by individual sides (14) which is open in the middle, several support rods (18) and their hinge point (30) and a cover structure (20) arranged between the roof frame (12) and the support rods (18) to cover the drill carriage (100) and form a closed inner space (112) on top of the body (104) of the drill carriage (100), which enables the drilling unit (110) to be raised inside the roof structure (10), characterized in that said support rods (18) are arranged to rotate around the hinge point (30) to arrange the cover structure (20) in operating position, which enables drilling the unit (110) is raised inside the roof structure (10) and in transport position, where the roof structure (10) is substantially in the direction of the floor (106) of the rig (100), and the roof structure (10) further comprises at least one actuator (22) for rotating the support rods ( 18) between operating mode and transport mode. In addition, the protection requirements 2-4.

Description

The invention relates to a bogie comprising a chassis structure, a frame supported on a chassis structure, a floor fitted to the frame and walls supported on the floor, a roof structure for mounting on walls, the roof frame being a centrally open circuit formed by individual sides, - a plurality of support arms attached to the roof frame, and - a cover structure fitted between the roof frame and the support arms to cover the drill carriage

The invention also relates to a roof structure for a drilling rig.

Drilling wagons are units intended for the transfer and use of drilling units for test drilling, which move in terrain to environments favorable for test drilling, for example in mineral exploration.

In the drilling wagon, for example, 3 m long protective pipes are fed into the drilling unit, by means of which a sample is collected from the drilling hole.

Drilling generally takes place at an angle perpendicular to N or almost perpendicular to the ground, in which case the protective pipes must be fed at the same angle to the drilling unit. it For this reason, the drilling rigs are usually open at the top and a separate temporary roof structure is erected on the walls. x a - A known roof structure is a hood structure used by the Finnish Arctic Drilling Company 30, which comprises a cover to be erected on the support arms N, which forms a temporary roof structure.

However, such a structure is remarkably slow and laborious to raise the operating position high at the drilling site and, accordingly, to lower it to the transport position when moving the drill carriage low.

The object of the invention is to provide a drilling trolley which can be converted into operating and transport positions more easily and quickly than in the prior art.

The characteristic features of the present invention appear from the appended protection claim 1. It is a further object of the invention to provide a roof structure for a drilling rig that can be converted into operating and transport positions more easily and quickly than in the prior art.

The characteristic features of the present invention appear from the appended claim 4. The purpose of the roof structure according to the invention can be achieved by a drill carriage comprising a substructure, a frame supported on the substructure, a floor fitted on the frame and walls supported on the floor, and permeable to the substructure, frame and floor, the drilling unit to be erected.

The roof structure includes a circumferential roof frame adapted for wall mounting, a plurality of support arms and a pivot point therefor.

The roof frame is an open circuit formed by the individual sides.

The support arms are adapted to pivot relative to the pivot point to accommodate the cover structure in the operating position, allowing the drilling unit to be erected within the roof structure and to the transport position where the N roof structure is substantially parallel to the floor of the drill carriage.

O 25 The roof structure further comprises at least one actuator for turning the arms between the operating and transport positions. In the drilling carriage according to the invention, the roof structure makes it possible to erect a drilling unit inside the roof structure and to make a very quick and easy conversion of the roof structure S from a low transport position to a high operating position.

In the transport position, the cover structure can be folded into a pile, whereby the roof structure is very low, while in the operating position there is space inside the roof structure to erect the drilling unit.

Preferably, the cover structure comprises a rigid roof surface and a collapsible cover fitted between the roof body, the support arms and the rigid roof surface.

The collapsible cover remains protected by a rigid roof surface in the transport position and is not exposed to clinging to trees, for example, when the drill is moving in the forest.

According to a preferred embodiment, the support arms are articulated to an articulation point formed in the roof frame to accommodate the cover structure in a circular arc to the operating position and the transport position.

The circularly moving support arms allow the cover structure to be folded to size with a fairly simple structure and quickly.

In other words, the cover is preferably adapted to form a curved cover with the support arms on the drill carriage in the operating position.

Preferably, each support arm comprises two substantially parallel vertical portions spaced apart by the width of the roof frame, and each vertical portion has a first end that articulates with the roof frame and a second end.

In addition, each support arm includes two oblique portions, each of which engages one end of one vertical portion at an angle of 25 to 60 ° toward an adjacent vertical portion, and a connecting portion connecting the oblique portions together to form a curved shape N on the support arm.

The vertical parts of each support arm are articulated to the roof frame S 25 on two symmetrically parallel, mutually opposite sides of the roof frame to open the cover structure in a circular arc to the operating position and to close it to the transport position.

By means of such support arms, the enclosed interior space formed inside the cover structure = is as large as possible in volume S30, but on the other hand the bevelled angles provided by the oblique parts prevent the formation of adhesive-prone rectangles and reduce the wind area of the roof structure in the operating position.

Each opposite side may have 3 to 6, preferably 4 to 5, support arms articulated to the articulation point. A sufficiently large number of support arms reduces the length of the unsupported gaps between the support arms, so that the cover stays better straight and does not form a bag for collecting snow, ice or water. This improves the durability of the roof structure in winter conditions. Preferably, the size of the successive support arms in a circular arc increases or decreases so that the support arms are nested when the cover structure is in the transport position. This, together with the common articulation point of the support points, allows the roof structure to be folded into a very low whole in the transport position when the support arms are parallel to one another.

The roof structure may comprise two said actuators, each arranged on one side of the roof structure outside the cover. Implemented by means of two support arms mounted outside the cover structure, the enclosed interior space inside the cover structure is as large as possible when the actuators do not take up space from the interior space. Preferably, each actuator is articulated from its first end belonging to the actuator N to the roof body and from the second end of the actuator to the support arm on which said rigid roof surface is formed, or directly to the rigid roof surface. Tr a - Preferably, the rigid roof surface is larger in width and length than said roof frame S 30 to cover the roof frame and cover N when the roof structure is in the transport position. In this way, the roof structure protects the cover from cuts and sticking to obstacles when the drill carriage is moving, for example in the forest.

Preferably, the roof structure comprises traction means fixed to the cover between the support arms and radially fixed with respect to the articulation point for pulling the cover inside the roof body in the transport position. By means of the traction means, the cover can be reliably collected 5 inside the roof frame in the transport position, whereby the cover is not exposed to gripping, for example, trees or similar obstacles from which the drill carriage moves in the terrain. Preferably, the traction means are rubber cords. The rubber cord can be fitted inside the cover and is safe to use. The cover may be 600 to 1200 g / m 2, preferably 800 to 1000 g / m 2. pvc plastic. Such a cover is strong enough to withstand the load applied to it due to, for example, wind, snow load or lifting of the cover structure. At the same time, such a cover is reasonable in weight and investment cost. Preferably, the roof structure comprises support reinforcements attached to the cover in the direction of the arc formed by the cover in its position of use, connecting the roof frame and the rigid roof surface. In this way, the support reinforcements partially transmit the force generated by the actuators through the rigid roof surface to the support reinforcements and thereby further to the cover and the support arms. In this way, the strain on the cover can be reduced by raising the cover to the operating position from the transport position. 3 O Preferably, the rigid roof surface comprises a second frame, a second = surface structure attached to the frame and at least one truss beam = to reinforce the second frame. This rigid roof surface is sufficiently rigid and light.

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The point of attachment of the first end of the actuator to the roof body may be at a distance from the articulation point of 40 to 70%, preferably 50 to 60% of the length of the roof body. The point of attachment of the second end of the actuator to the second body may in turn be at a distance from the articulation point of 12 to 35%, preferably 15 to 25% of the length of the second body.

The roof structure may comprise an articulated link comprising an articulated arm articulated from its central region by a second articulated shaft to a rigid roof surface, a second articulation point for articulating one end of the actuator to the articulated arm, and a support roller articulated to the opposite end articulated arm about another articulated shaft. In this way, the direction of power generation of the actuator can be improved in the initial stage of lifting the cover structure from the transport position to the operating position.

The purpose of the roof structure according to the invention can be achieved by a roof structure for a drill carriage comprising a circumferential roof frame fitted for wall mounting, a plurality of support arms attached to the roof frame and a cover structure fitted between the roof frame and the support arms. inside the roof structure. The roof frame is an open circuit formed by the individual sides. The support arms are articulated to the roof frame to accommodate the cover structure in the operating position, allowing the drilling unit to be erected inside the roof structure and to the transport position, where the roof structure is substantially parallel to the floor of the drill. The roof structure further comprises at least one actuator for pivoting the support arms between the operating and transport positions. The roof structure according to the invention is intended for a drill carriage comprising a substructure structure, a frame supported on a substructure, a floor fitted on top of the frame and walls supported on the floor, and an erectable drilling unit penetrating the substructure, the frame and the floor.

Preferably, the optional features of the roof structure of the drill carriage according to the invention can also be applied in connection with the roof structure according to the invention.

The roof structure according to the invention can be used not only for drilling rigs but also for other corresponding drilling rigs which require a high interior space.

The invention will now be described in detail with reference to the accompanying drawings, which illustrate some embodiments of the invention, in which Figure 1a shows a roof structure according to the invention in front view when the roof structure is in the transport position. Fig. 2a shows a roof structure according to the invention in the case of a borehole when viewed from the rear, when the roof structure is in the transport position, Fig. 0 without cover from the front oblique, = Fig. 4 shows a front view of the roof structure according to the invention in a separate operating position, S 30 Fig. 5 shows an enlargement of the details A or N of the articulation point 3 of the details B, i.e. the attachment point of the first end of the actuator,

Fig. 7 shows an enlarged view of the details C of Fig. 3, i.e. the attachment point and the articulation of the other end of the actuator, Fig. 8a shows a side view of the roof structure according to the invention in the operating position, separately in the upper position, Figure 10 shows the steps of a drill carriage according to the invention axonometric separately in the upper position.

Figures 1a and 1b show a preferred embodiment of the drill carriage 100 according to the invention and the associated roof structure 10 according to the invention.

The drill carriage 100 includes a base structure 102, which is preferably a roller base 103, a frame 104 on which the base structure 102 rests, a floor 106 formed on the frame 104, and walls circling the floor 106 supported on the floor 106. The roof structure 10 is formed on the walls 108 and forms an enclosed interior 112 inside the drill carriage 100.

An upright drill unit 110 is passed into the interior through the base structure 102, the body 104 and the floor 106, which is shown in broken lines in its operating position in Fig. 8a.

The drilling unit N 110 can be rotated, if necessary, between a vertical position O 25 with respect to the floor and a position parallel to the floor during the various operating stages of the drilling unit.

To this end, the roof structure 10 must be such as to enable the interior E 112 of the drill carriage 100 to be protected in all situations.

S 30 Figure 1a shows the transport position of the drill carriage 100, in which the roof structure 10 N is lowered substantially parallel to the floor 106 of the drill carriage 100.

Normally, in the transport position, the steps 60 are also in their upper position, but in Fig. 1a only by way of example in their lower position, which is normally the operating position.

Figure 1b, in turn, shows the operating position in which the roof structure 10 is raised to allow the drilling unit 110 to be erected in the interior 112 of the drill carriage 100. The roof structure 10 includes a roof frame 12 attached to the walls 108 using pages 14 as shown in Figure 3.

More specifically, the roof frame 12 can be attached to the upper circuit belonging to the walls 108 of the drill carriage 100 by bolt mounting.

To ensure the tightness of the fastening, sheet metal bent protective plates covering the connection between the roof structure and the walls of the excavation carriage or other suitable sealing can be used.

A plurality of support arms 18 are articulated to the roof body 12, and a cover structure 20 is formed between the support arms 18 and the roof body 12 to cover the drill carriage 100 and to form said closed interior 112 on the body 104 of the drill carriage 100.

By means of the articulated support arms 18, the cover structure 20 can be pivoted about the articulation point 30 of the support arms 18 in a circular arc from the operating position to the transport position and vice versa.

More specifically, the cover structure 20 preferably consists of a rigid roof surface 24 and a cover 26 arranged between the roof body 12 and the rigid roof surface 24 supported by support arms 18.

The rigid roof surface 24 according to Fig. 3 N preferably comprises a second frame 25, which is, for example, a support structure formed by a strip of steel profile and forming a closed circuit. The second body may be formed, for example, of a 3 mm steel profile with dimensions of 50 x 100 mm.

The second frame 25 is = preferably stiffened by longitudinal = truss beams 56 of the rigid roof surface 24.

Stiffening is necessary because the force N produced by the actuators 22 belonging to the roof structure 10 when the rigid roof surface 24 is rotated around the hinge point 30 is applied to the second frame 25, while the combined mass of the support arms 18 and the cover 26

in the opposite direction.

A drill carriage is attached to the second frame 25

100 is a surface structure 57 that provides protection for the enclosed interior, which is preferably an aluminum sheet for lightness. The surface structure can also be composite, for example.

According to Figures 3 and 4, the support arms 18 are preferably shaped so as to allow the greatest possible closed interior space on the drill carriage, but on the other hand do not cause a very large wind area for the roof structure. For this reason, each support arm 18 includes two substantially parallel uprights 40, each having a first end 42 and a second end 44. Each upright 40 is articulated to a hinge point 30 at its first end and an oblique portion 46 is attached to the other end. - 60? at an angle to the vertical portion 40 so that the oblique portions 46 are finally connected by a connecting portion 48. A single U-shaped structure is formed on each support arm. The support arms can be formed of a hollow 3 mm steel profile with dimensions of 40 x 40 mm. Correspondingly, the rigid roof surface 24 also has a shape corresponding to the shape of the support arms 18 so that the rigid roof surface 24 completely covers the cover 26 in the transport position. At the same time, according to Figs.

The articulation of the support arms 18 to the roof frame 12 is shown in more detail in Fig. 5. Preferably, an articulation point 30 is formed at the end of the roof frame 12, to which the support arms 30 articulate. The first end 42 of the vertical portions 40 of each = support arm 18 includes an S 30 sleeve 64 through which a PTO shaft 62 is fitted. The sleeve N 64 is preferably wider than the support arm so that a gap of 20 to 50 mm is left between the vertical parts 40 of the support arms 18 adjacent the pivot shaft 62 5, into which the cover can be folded when the cover structure 20 is lowered to the transport position. The articulated shaft 62, in turn, is supported on an lug 61 attached to the roof frame 12. In addition to the lugs on the sides of the roof body, the articulated shaft may also be supported in the middle to improve its durability.

As shown in Figs. between the support arms at the same time to the articulated shaft 62 which is continuous over the entire width of the roof frame 12.

In the transport position, the height of the roof structure 10 is remarkably low, only about 10 to 20 cm, due to the fact that the support arms 18 are nested relative to each other at a common articulation point 30 which attaches to the roof frame 12. - the hydraulic cylinders 23, which preferably act as devices 22, are located outside the cover 26.

In this way, the actuators 22 do not take up space from the enclosed interior and remain entirely available for drilling.

The actuators 22 engage the first end 32 in the roof body 12 and the second end 34 in the second body 25. The attachment point of the first end 32 N of the actuators 22 to the roof body 12 and the second end attachment point O 25 to the second body must be carefully selected to provide sufficient force to turn the cover structure 20 to 0 without articulation points 30 too.

The point of attachment of the first end of the actuator = 22 to the roof body 12 may be = at a distance 11 from the articulation point 30, which distance 11 is 40 to 70 S 30%, preferably 50 to 60% of the length of the roof body 12.

The point of attachment of the second end of the actuator 22 to the second body 25 may in turn be at a distance 12 from the articulation point 30, which distance 12 is 12 to 35%, preferably 15 to 25% of the length of the second body 25.

When lifting the cover structure 20 from the transport position to the operating position, the position of the actuators 22 in the transport position is almost parallel to the roof body 12, whereby the force provided by the actuators 22 in the direction perpendicular to the plane of the roof body 12 is weak.

That is, the force provided by the actuators 22 is directed substantially toward the pivot point 30. For this purpose, the roof structure 10 may include a pivot link 54 shown in more detail in Fig. 6, the pivot arm 66 articulated to the second body 25 the other end, in turn, is articulated to the second articulation point 65 at one end of the articulation arm 66. At the other end, the articulation arm 66 includes a support roller 68 which, in the transport position, rests against the roof body 12.

When the actuator 22 is started in the transport position, the pivot arm 66 pivots about the second pivot shaft 69, with the support roller 68 pushing the second pivot point 65 away from the roof body 12 to the roof body 12, improving power perpendicular to the plane of the actuator 30 stress.

The piston rod of the hydraulic cylinder may be thickened at the end of the cylinder shell side to prevent buckling when operating close to the operating position.

Hydraulic cylinders may also include load relief valves, N, which prevent the roof structure from collapsing into the transport position.

O 25 The length of the hydraulic cylinder for the casing part can be about 2.3 m and the total length when fully extended is about 4.5 m. a vertically telescopic beam fitted to the roof frame, the end of which is fitted with a roof winch for pulling the rigid roof surface into the operating position.

When the cover structure 20 is moved from the transport position to the operating position, the actuators 22 only pivot the rigid roof surface 24 around the pivot point 30.

The rigid roof surface 24 pulls the cover 26 attached to it as it turns, as do the support arms 18 supporting the cover 26 and attached to the cover 26 through the cover 26 as the cover 26 is tightened straight.

In other words, the individual support arms 18 are not rotated directly by any actuator.

There are 3 to 8 support arms, preferably 4 to 5, so that the unsupported gap between the cover arms in the operating position does not become too long, whereby, for example, snow or rain could accumulate in the unsupported space of the cover, creating an additional load on the cover.

In the embodiment shown in Figures 1a to 10b, there are four support arms, and in the operating position the support arms 18 are at an angle of 18 °, 36 °, 549 and 72 ° to the roof frame 12. In this case, the distance between the support arms becomes approximately 2.3 m.

It is important for the durability of the roof structure 10 that in the transport position the cover 26 is not exposed to gripping, for example, trees outside the drill carriage 100.

For this reason, the cover 26 must be folded in a controlled manner inside the roof body 12 with the roof structure 10 in the transport position.

For this purpose, the roof structure 10 comprises the N pulling means 36 shown in Fig. 7a for pulling the cover inside the roof frame 12 into the transport position.

Preferably, the traction means 36 are designed such that the cover 26 is formed with radial, channel-like pockets with respect to the hinge point 30, to which a = biased rubber rope 38 is shown, shown in broken lines in Fig. Ta.

The rubber cord 38 rotates in the cover 26 like support arms 18 S 30, being located substantially symmetrically between two successive N support arms 18 in the cover 26. For example, the rubber cord can be attached to the roof frame at each end.

When the rigid roof surface 24 is turned to the operating position, the cover 26 is tightened and the rubber cords 38 are further tensioned.

While the cover structure 20 is brought into the transport position, the tension of the cover 26 is released, whereby the tightened rubber cord 38 pulls the loose cover 26 in a controlled direction inside the roof body 12.

The rubber cord used can be, for example, 8 to 12 mm thick.

Instead of using a rubber rope, the traction means can be, for example, a cable which can be tightened by means of an actuator, which runs correspondingly inside the cover, or for example a spring structure which is attached to different points of the cover.

In addition to the traction means, the cover can also be protected so that the rigid roof surface 24 is at least 10 cm wider than the roof frame 12 in width and length, whereby the cover 26 remains under the rigid roof surface 24 in the transport position.

As a further protection, the guard rails 52 shown on the sides of the roof frame 12 shown in Figs.

The cover used in the roof structure according to the invention can be, for example, lacquered 600 to 1200, preferably 800 to 1000 g / m 2. N square weight pvc cover.

Alternatively, the cover may also be a fiber-based material of equivalent strength. it The choice of the cover is important, as the cover must be able to withstand the wind and snow loads applied to it, as well as the traction applied to it, which consists of the cover's own weight and = the weight of the support arms when the cover is raised to the operating position.

S 30 Preferably, N is attached to the cover 26 as shown in Fig. 8b, for example by sewing or gluing support reinforcements 45, 5 running parallel to the arc of the cover structure 26, i.e. between the support arms 18 along the entire arc of the cover 26 from the roof frame 12 to the rigid roof surface 24.

The support reinforcements 45 contribute to the force of the actuators 22 to the cover 26 and raise the support arms 18 as the cover structure 20 is raised to the operating position.

The support reinforcements can be, for example, nylon strips that can withstand high tensile loads.

The cover can be attached to the support arms by means of pop rivets through the strips to be glued.

Preferably, the color of the cover is chosen to be as light, white or gray as possible, since the sun partially passes through the cover, coloring the interior with light, which may have physiological effects if the color were red, for example.

The drilling rig according to the invention preferably comprises a remote control with which the actuators can be controlled to raise the cover structure from the transport position to the operating position and vice versa.

The remote control preferably controls the hydraulic directional valve via the receiver if the actuators are hydraulic cylinders.

On the other hand, if the actuator is a winch, for example, the remote control controls the winch motor.

When using hydraulic cylinders, the required hydraulic flow can be obtained from the hydraulic unit of the drill carriage.

Preferably, the control of the roof structure is manual, but it can also be automated using limit switches and control logic.

Figures 2a and 2b show an O 25 stone elevator 70, preferably belonging to the drill carriage 100, which is described in more detail in Figure 9. In Figures 2b and 9, the stone elevator 70 is in the upper position, while in Figure 10 it is in the lower position.

The purpose of the stone elevator 70 is to assist the user of the drill carriage 100 = in transporting the rock samples forward from the drill carriage = 100.

As shown in Figure 9, the stone elevator 70 includes an elevator carriage 80 that forms guides to which a sliding carriage 86 and an elevator carriage 82 attached to the sliding carriage 86 are provided. The figure does not show the wire between the slide carriage 86 and the elevator winch.

11114. The elevator car 80, in turn, is attached to the walls 108 or the carriage 104 or both of the carriage 100 as shown in Figures 2a and 2b. Figures 1a and 1b show the steps 60 preferably belonging to the drill carriage 100, which are described in more detail in Figure 10. In Figure 1a, the steps are in the operating position, while in Figures 1b and 10 the steps are in the transport position. The steps 60 are not fixed, but are hinged, as shown in Fig. 10, by a hinge 72 to a fixed walking plane

93. The steps 60 include a two-part step body 63 and steps 78 articulated to the step body. The two-part step body 63 has an upper support 63.1 and a lower support 63.2, each of which has individual steps 78 articulated. Thus, the steps 78 are substantially horizontal in both the transport and operating positions, whereby also in the transport position the steps 60 form a flat extension to the walking plane 93. At the lower end The roof structure according to the invention can have a bogie length of 6 to 8 m, a width of 2.5 to 3.5 m and a height N of 4 to 10 m. The embodiment of the roof structure O 25 shown in Figures 1a to 8b is preferably 7.6 m long it is 3.1 m and 7.6 m high in the operating position. In this case, the volume formed inside the cover structure is about 7 m high, = because the rigid roof surface is slightly higher than the support arms. = Such a structure can weigh 1200 to 1300 kg. The height S30 in this context means the height from the upper edge of the walls N of the drilling carriage to the highest point of the roof structure, i.e. to the tip of the rigid roof surface. Of course, the roof structure according to the invention can be applied quite flexibly to roof structures of different sizes, and the length dimensions presented here are only an example of the implementation. Since the drill wagon itself is 3.5 to 4 m high from the ground to the top of the walls, it becomes quite high in the operating position. To support the drill carriage against wind loads, the drill carriage 100 preferably includes support legs 96 as shown in Figures 1a-2b, which are supported on the ground during operation. In this connection, it is to be understood that the steps and the stone elevator described hereinbefore may also be used independently as part of the invention in connection with drilling rigs.

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Claims (4)

PROTECTIVE REQUIREMENTS A drill carriage (100), comprising a chassis (102), a frame (104) resting on said chassis (102), a floor (106) arranged on said frame (104) and walls (108) resting on said floor (106), roof structure (10) and an upright drilling unit (110) passing through the base (102), the frame (104) and the floor (106), the roof structure (10) comprising - a frame-shaped roof frame (12) arranged to be attached to said walls (108), which roof frame (12) is a circuit (16) formed by individual sides (14) which is open in the middle, - several support rods (18) and their hinge point (30) and - a cover structure (20) arranged between the roof frame (12) and the support rods (18) for covering the drill carriage (100) and forming a closed interior space (112) on top of the body (104) of the drill carriage (100), which enables the drilling unit (110) to be raised inside the roof structure (10), characterized in that said support rods (18) are arranged to rotate around the hinge point (30) to arrange the cover structure (20) in operating position which enables that the drilling unit (110) is erected inside the roof structure (10) and in transport position, where the roof structure (10) is substantially in the direction of the floor (106) of the drill carriage (100), and the roof structure (10) further comprises N at least one actuator (22 ) to turn the support rods (18) between 0 operating position and transport position. Drilling carriage according to protection claim 1, characterized in that = said support rods (18) are hinged to a said guide point (30) formed on the roof frame (12) = to arrange the cover structure S (20) with a circuit bend in operating position and in transport position. . > ” Drilling trolley according to protection claim 2, characterized in that the roof structure (10) comprises two said actuators (22) each arranged on one side of the roof structure (10) outside the roof structure (20). A roof structure (10) for drilling carriage (100), which drilling carriage comprises chassis (102), body (104) resting on said chassis (102), floor (106) arranged on said body (104) and walls (108) resting on said floor (106), roof structure (10) and a reclining drilling unit (110) extending through the base (102), the frame (104) and the floor (106), the roof structure (10) comprising - a frame-shaped roof frame (12) arranged to be attached to said walls (108), which roof frame (12) is a circuit (16) formed by individual sides (14) which is open in the middle, - several support rods (18) attached to said roof frame (12) and - a cover structure (20) arranged between the roof frame (12) and the support rods (18) to cover the drill carriage (100) and form a closed interior space (112) on top of the body of the drill carriage (100) (104), which enables the drilling unit (110) to be raised inside the roof structure (10), characterized in that said support rods (18) are hinged to the roof frame (12) for arranging the covering structure (20) in d rift position which enables the drilling unit (106) to be raised inside the N roof structure (10) and in a transport position, where the roof structure (10) is substantially in the direction of the drilling carriage (100) (106) see direction, and the roof structure (10) further comprises at least 0 a stable device (22) for rotating the support rods (18) between E operating position and transport position. S N 8> ”